/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import * as ts from 'typescript';

import {absoluteFrom, getFileSystem, getSourceFileOrError} from '../../../src/ngtsc/file_system';
import {TestFile, runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
import {ClassMemberKind, CtorParameter, Import, isNamedClassDeclaration, isNamedFunctionDeclaration, isNamedVariableDeclaration} from '../../../src/ngtsc/reflection';
import {getDeclaration} from '../../../src/ngtsc/testing';
import {loadFakeCore, loadTestFiles} from '../../../test/helpers';
import {Esm2015ReflectionHost} from '../../src/host/esm2015_host';
import {getIifeBody} from '../../src/host/esm5_host';
import {UmdReflectionHost} from '../../src/host/umd_host';
import {MockLogger} from '../helpers/mock_logger';
import {getRootFiles, makeTestBundleProgram} from '../helpers/utils';

import {expectTypeValueReferencesForParameters} from './util';

runInEachFileSystem(() => {
  describe('UmdReflectionHost', () => {
    let _: typeof absoluteFrom;

    let SOME_DIRECTIVE_FILE: TestFile;
    let TOPLEVEL_DECORATORS_FILE: TestFile;
    let CTOR_DECORATORS_ARRAY_FILE: TestFile;
    let SIMPLE_ES2015_CLASS_FILE: TestFile;
    let SIMPLE_CLASS_FILE: TestFile;
    let FOO_FUNCTION_FILE: TestFile;
    let INVALID_DECORATORS_FILE: TestFile;
    let INVALID_DECORATOR_ARGS_FILE: TestFile;
    let INVALID_PROP_DECORATORS_FILE: TestFile;
    let INVALID_PROP_DECORATOR_ARGS_FILE: TestFile;
    let INVALID_CTOR_DECORATORS_FILE: TestFile;
    let INVALID_CTOR_DECORATOR_ARGS_FILE: TestFile;
    let IMPORTS_FILES: TestFile[];
    let EXPORTS_FILES: TestFile[];
    let FUNCTION_BODY_FILE: TestFile;
    let DECORATED_FILES: TestFile[];
    let TYPINGS_SRC_FILES: TestFile[];
    let TYPINGS_DTS_FILES: TestFile[];
    let MODULE_WITH_PROVIDERS_PROGRAM: TestFile[];

    beforeEach(() => {
      _ = absoluteFrom;

      SOME_DIRECTIVE_FILE = {
        name: _('/some_directive.umd.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
  typeof define === 'function' && define.amd ? define('some_directive', ['exports', '@angular/core'], factory) :
  (factory(global.some_directive,global.ng.core));
}(this, (function (exports,core) { 'use strict';

  var INJECTED_TOKEN = new InjectionToken('injected');
  var ViewContainerRef = {};
  var TemplateRef = {};

  var SomeDirective = (function() {
    function SomeDirective(_viewContainer, _template, injected) {
      this.instanceProperty = 'instance';
    }
    SomeDirective.prototype = {
      instanceMethod: function() {},
    };
    SomeDirective.staticMethod = function() {};
    SomeDirective.staticProperty = 'static';
    SomeDirective.decorators = [
      { type: core.Directive, args: [{ selector: '[someDirective]' },] }
    ];
    SomeDirective.ctorParameters = function() { return [
      { type: ViewContainerRef, },
      { type: TemplateRef, },
      { type: undefined, decorators: [{ type: core.Inject, args: [INJECTED_TOKEN,] },] },
    ]; };
    SomeDirective.propDecorators = {
      "input1": [{ type: core.Input },],
      "input2": [{ type: core.Input },],
    };
    return SomeDirective;
  }());
  exports.SomeDirective = SomeDirective;
})));`,
      };

      TOPLEVEL_DECORATORS_FILE = {
        name: _('/toplevel_decorators.umd.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
  typeof define === 'function' && define.amd ? define('some_directive', ['exports', '@angular/core'], factory) :
  (factory(global.some_directive,global.ng.core));
}(this, (function (exports,core) { 'use strict';

  var INJECTED_TOKEN = new core.InjectionToken('injected');
  var ViewContainerRef = {};
  var TemplateRef = {};

  var SomeDirective = (function() {
    function SomeDirective(_viewContainer, _template, injected) {}
    return SomeDirective;
  }());
  SomeDirective.decorators = [
    { type: core.Directive, args: [{ selector: '[someDirective]' },] }
  ];
  SomeDirective.ctorParameters = function() { return [
    { type: ViewContainerRef, },
    { type: TemplateRef, },
    { type: undefined, decorators: [{ type: core.Inject, args: [INJECTED_TOKEN,] },] },
  ]; };
  SomeDirective.propDecorators = {
    "input1": [{ type: core.Input },],
    "input2": [{ type: core.Input },],
  };
  exports.SomeDirective = SomeDirective;
})));`,
      };

      CTOR_DECORATORS_ARRAY_FILE = {
        name: _('/ctor_decorated_as_array.js'),
        contents: `
        (function (global, factory) {
          typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
          typeof define === 'function' && define.amd ? define('ctor_decorated_as_array', ['exports', '@angular/core'], factory) :
          (factory(global.ctor_decorated_as_array,global.ng.core));
        }(this, (function (exports,core) { 'use strict';
            var CtorDecoratedAsArray = (function() {
            function CtorDecoratedAsArray(arg1) {
            }
            CtorDecoratedAsArray.ctorParameters = [{ type: ParamType, decorators: [{ type: Inject },] }];
            return CtorDecoratedAsArray;
          }());
          exports.CtorDecoratedAsArray = CtorDecoratedAsArray;
        })));`,
      };

      SIMPLE_ES2015_CLASS_FILE = {
        name: _('/simple_es2015_class.d.ts'),
        contents: `
    export class EmptyClass {}
  `,
      };

      SIMPLE_CLASS_FILE = {
        name: _('/simple_class.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define('simple_class', ['exports'], factory) :
  (factory(global.simple_class));
}(this, (function (exports) { 'use strict';
  var EmptyClass = (function() {
    function EmptyClass() {
    }
    return EmptyClass;
  }());
  var NoDecoratorConstructorClass = (function() {
    function NoDecoratorConstructorClass(foo) {
    }
    return NoDecoratorConstructorClass;
  }());
  exports.EmptyClass = EmptyClass;
  exports.NoDecoratorConstructorClass = NoDecoratorConstructorClass;
})));`,
      };

      FOO_FUNCTION_FILE = {
        name: _('/foo_function.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
  typeof define === 'function' && define.amd ? define('foo_function', ['exports', '@angular/core'], factory) :
  (factory(global.foo_function,global.ng.core));
}(this, (function (exports,core) { 'use strict';
  function foo() {}
  foo.decorators = [
    { type: core.Directive, args: [{ selector: '[ignored]' },] }
  ];
  exports.foo = foo;
})));`,
      };

      INVALID_DECORATORS_FILE = {
        name: _('/invalid_decorators.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
  typeof define === 'function' && define.amd ? define('invalid_decorators', ['exports', '@angular/core'], factory) :
  (factory(global.invalid_decorators, global.ng.core));
}(this, (function (exports,core) { 'use strict';
  var NotArrayLiteral = (function() {
    function NotArrayLiteral() {
    }
    NotArrayLiteral.decorators = () => [
      { type: core.Directive, args: [{ selector: '[ignored]' },] },
    ];
    return NotArrayLiteral;
  }());

  var NotObjectLiteral = (function() {
    function NotObjectLiteral() {
    }
    NotObjectLiteral.decorators = [
      "This is not an object literal",
      { type: core.Directive },
    ];
    return NotObjectLiteral;
  }());

  var NoTypeProperty = (function() {
    function NoTypeProperty() {
    }
    NoTypeProperty.decorators = [
      { notType: core.Directive },
      { type: core.Directive },
    ];
    return NoTypeProperty;
  }());

  var NotIdentifier = (function() {
    function NotIdentifier() {
    }
    NotIdentifier.decorators = [
      { type: 'StringsLiteralsAreNotIdentifiers' },
      { type: core.Directive },
    ];
    return NotIdentifier;
  }());
})));`,
      };

      INVALID_DECORATOR_ARGS_FILE = {
        name: _('/invalid_decorator_args.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
  typeof define === 'function' && define.amd ? define('invalid_decorator_args', ['exports', '@angular/core'], factory) :
  (factory(global.invalid_decorator_args, global.ng.core));
}(this, (function (exports,core) { 'use strict';
  var NoArgsProperty = (function() {
    function NoArgsProperty() {
    }
    NoArgsProperty.decorators = [
      { type: core.Directive },
    ];
    return NoArgsProperty;
  }());

  var args = [{ selector: '[ignored]' },];
  var NoPropertyAssignment = (function() {
    function NoPropertyAssignment() {
    }
    NoPropertyAssignment.decorators = [
      { type: core.Directive, args },
    ];
    return NoPropertyAssignment;
  }());

  var NotArrayLiteral = (function() {
    function NotArrayLiteral() {
    }
    NotArrayLiteral.decorators = [
      { type: core.Directive, args: () => [{ selector: '[ignored]' },] },
    ];
    return NotArrayLiteral;
  }());
})));`,
      };

      INVALID_PROP_DECORATORS_FILE = {
        name: _('/invalid_prop_decorators.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
  typeof define === 'function' && define.amd ? define('invalid_prop_decorators', ['exports', '@angular/core'], factory) :
  (factory(global.invalid_prop_decorators, global.ng.core));
}(this, (function (exports,core) { 'use strict';
  var NotObjectLiteral = (function() {
    function NotObjectLiteral() {
    }
    NotObjectLiteral.propDecorators = () => ({
      "prop": [{ type: core.Directive },]
    });
    return NotObjectLiteral;
  }());

  var NotObjectLiteralProp = (function() {
    function NotObjectLiteralProp() {
    }
    NotObjectLiteralProp.propDecorators = {
      "prop": [
        "This is not an object literal",
        { type: core.Directive },
      ]
    };
    return NotObjectLiteralProp;
  }());

  var NoTypeProperty = (function() {
    function NoTypeProperty() {
    }
    NoTypeProperty.propDecorators = {
      "prop": [
        { notType: core.Directive },
        { type: core.Directive },
      ]
    };
    return NoTypeProperty;
  }());

  var NotIdentifier = (function() {
    function NotIdentifier() {
    }
    NotIdentifier.propDecorators = {
      "prop": [
        { type: 'StringsLiteralsAreNotIdentifiers' },
        { type: core.Directive },
      ]
    };
    return NotIdentifier;
  }());
})));`,
      };

      INVALID_PROP_DECORATOR_ARGS_FILE = {
        name: _('/invalid_prop_decorator_args.js'),
        contents: `
  (function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
    typeof define === 'function' && define.amd ? define('invalid_prop_decorator_args', ['exports', '@angular/core'], factory) :
    (factory(global.invalid_prop_decorator_args, global.ng.core));
  }(this, (function (exports,core) { 'use strict';
  var NoArgsProperty = (function() {
    function NoArgsProperty() {
    }
    NoArgsProperty.propDecorators = {
      "prop": [{ type: core.Input },]
    };
    return NoArgsProperty;
  }());

  var args = [{ selector: '[ignored]' },];
  var NoPropertyAssignment = (function() {
    function NoPropertyAssignment() {
    }
    NoPropertyAssignment.propDecorators = {
      "prop": [{ type: core.Input, args },]
    };
    return NoPropertyAssignment;
  }());

  var NotArrayLiteral = (function() {
    function NotArrayLiteral() {
    }
    NotArrayLiteral.propDecorators = {
      "prop": [{ type: core.Input, args: () => [{ selector: '[ignored]' },] },],
    };
    return NotArrayLiteral;
  }());
})));`,
      };

      INVALID_CTOR_DECORATORS_FILE = {
        name: _('/invalid_ctor_decorators.js'),
        contents: `
  (function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
    typeof define === 'function' && define.amd ? define('invalid_ctor_decorators', ['exports', '@angular/core'], factory) :
    (factory(global.invalid_ctor_decorators,global.ng.core));
  }(this, (function (exports,core) { 'use strict';
    var NoParameters = (function() {
    function NoParameters() {}
    return NoParameters;
  }());

  var NotArrayLiteral = (function() {
    function NotArrayLiteral(arg1) {
    }
    NotArrayLiteral.ctorParameters = function() { return 'StringsAreNotArrayLiterals'; };
    return NotArrayLiteral;
  }());

  var NotObjectLiteral = (function() {
    function NotObjectLiteral(arg1, arg2) {
    }
    NotObjectLiteral.ctorParameters = function() { return [
      "This is not an object literal",
      { type: 'ParamType', decorators: [{ type: core.Inject },] },
    ]; };
    return NotObjectLiteral;
  }());

  var NoTypeProperty = (function() {
    function NoTypeProperty(arg1, arg2) {
    }
    NoTypeProperty.ctorParameters = function() { return [
      {
        type: 'ParamType',
        decorators: [
          { notType: core.Inject },
          { type: core.Inject },
        ]
      },
    ]; };
    return NoTypeProperty;
  }());

  var NotIdentifier = (function() {
    function NotIdentifier(arg1, arg2) {
    }
    NotIdentifier.ctorParameters = function() { return [
      {
        type: 'ParamType',
        decorators: [
          { type: 'StringsLiteralsAreNotIdentifiers' },
          { type: core.Inject },
        ]
      },
    ]; };
    return NotIdentifier;
  }());
})));`,
      };

      INVALID_CTOR_DECORATOR_ARGS_FILE = {
        name: _('/invalid_ctor_decorator_args.js'),
        contents: `
  (function (global, factory) {
    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
    typeof define === 'function' && define.amd ? define('invalid_ctor_decorator_args', ['exports', '@angular/core'], factory) :
    (factory(global.invalid_ctor_decorator_args,global.ng.core));
  }(this, (function (exports,core) { 'use strict';
    var NoArgsProperty = (function() {
    function NoArgsProperty(arg1) {
    }
    NoArgsProperty.ctorParameters = function() { return [
      { type: 'ParamType', decorators: [{ type: core.Inject },] },
    ]; };
    return NoArgsProperty;
  }());

  var args = [{ selector: '[ignored]' },];
  var NoPropertyAssignment = (function() {
    function NoPropertyAssignment(arg1) {
    }
    NoPropertyAssignment.ctorParameters = function() { return [
      { type: 'ParamType', decorators: [{ type: core.Inject, args },] },
    ]; };
    return NoPropertyAssignment;
  }());

  var NotArrayLiteral = (function() {
    function NotArrayLiteral(arg1) {
    }
    NotArrayLiteral.ctorParameters = function() { return [
      { type: 'ParamType', decorators: [{ type: core.Inject, args: () => [{ selector: '[ignored]' },] },] },
    ]; };
    return NotArrayLiteral;
  }());
})));`,
      };

      IMPORTS_FILES = [
        {
          name: _('/index.js'),
          contents: `
          (function (global, factory) {
            typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./file_a'), require('./file_b'), require('./file_c')) :
            typeof define === 'function' && define.amd ? define('index', ['exports', './file_a', './file_b', './file_c'], factory) :
            (factory(global.index, global.file_a, global.file_b, global.file_c));
          }(this, (function (exports, file_a, file_b, file_c) { 'use strict';
          })));`,
        },
        {
          name: _('/file_a.js'),
          contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define('file_a', ['exports'], factory) :
  (factory(global.file_a));
}(this, (function (exports) { 'use strict';
  var a = 'a';
  exports.a = a;
})));`,
        },
        {
          name: _('/file_b.js'),
          contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./file_a')) :
  typeof define === 'function' && define.amd ? define('file_b', ['exports', './file_a'], factory) :
  (factory(global.file_b,global.file_a));
}(this, (function (exports, file_a) { 'use strict';
  var b = file_a.a;
  var c = 'c';
  var d = c;
})));`,
        },
        {
          name: _('/file_c.js'),
          contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./file_a')) :
  typeof define === 'function' && define.amd ? define('file_c', ['exports', 'file_a'], factory) :
  (factory(global.file_c,global.file_a));
}(this, function (exports, file_a) { 'use strict';
  var c = file_a.a;
}));`,
        },
      ];

      EXPORTS_FILES = [
        {
          name: _('/index.js'),
          contents: `
          (function (global, factory) {
            typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./a_module'), require('./b_module')) :
            typeof define === 'function' && define.amd ? define('index', ['exports', './a_module', './b_module'], factory) :
            (factory(global.index, global.a_module, global.b_module));
          }(this, (function (exports, a_module, b_module) { 'use strict';
          })));
          `
        },
        {
          name: _('/a_module.js'),
          contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define('a_module', ['exports'], factory) :
  (factory(global.a_module));
}(this, (function (exports) { 'use strict';
  var a = 'a';
  exports.a = a;
})));`,
        },
        {
          name: _('/b_module.js'),
          contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core'), require('/a_module')) :
  typeof define === 'function' && define.amd ? define('b_module', ['exports', '@angular/core', 'a_module'], factory) :
  (factory(global.b_module));
}(this, (function (exports, core, a_module) { 'use strict';
  var b = a_module.a;
  var e = 'e';
  var SomeClass = (function() {
    function SomeClass() {}
    return SomeClass;
  }());

  exports.Directive = core.Directive;
  exports.a = a_module.a;
  exports.b = b;
  exports.c = a_module.a;
  exports.d = b;
  exports.e = e;
  exports.DirectiveX = core.Directive;
  exports.SomeClass = SomeClass;
})));`,
        },
      ];

      FUNCTION_BODY_FILE = {
        name: _('/function_body.js'),
        contents: `
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define('function_body', ['exports'], factory) :
  (factory(global.function_body));
}(this, (function (exports) { 'use strict';
    function foo(x) {
    return x;
  }
  function bar(x, y) {
    if (y === void 0) { y = 42; }
    return x + y;
  }
  function complex() {
    var x = 42;
    return 42;
  }
  function baz(x) {
    var y;
    if (x === void 0) { y = 42; }
    return y;
  }
  var y;
  function qux(x) {
    if (x === void 0) { y = 42; }
    return y;
  }
  function moo() {
    var x;
    if (x === void 0) { x = 42; }
    return x;
  }
  var x;
  function juu() {
    if (x === void 0) { x = 42; }
    return x;
  }
})));`
      };

      DECORATED_FILES = [
        {
          name: _('/primary.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core'), require('./secondary')) :
      typeof define === 'function' && define.amd ? define('primary', ['exports', '@angular/core', './secondary'], factory) :
      (factory(global.primary,global.ng.core, global.secondary));
    }(this, (function (exports,core,secondary) { 'use strict';
    var A = (function() {
      function A() {}
      A.decorators = [
        { type: core.Directive, args: [{ selector: '[a]' }] }
      ];
      return A;
    }());
     var B = (function() {
      function B() {}
      B.decorators = [
        { type: core.Directive, args: [{ selector: '[b]' }] }
      ];
      return B;
    }());
     function x() {}
     function y() {}
     var C = (function() {
      function C() {}
      return C;
    });
    exports.A = A;
    exports.x = x;
    exports.C = C;
    })));`
        },
        {
          name: _('/secondary.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/core')) :
      typeof define === 'function' && define.amd ? define('primary', ['exports', '@angular/core'], factory) :
      (factory(global.primary,global.ng.core));
    }(this, (function (exports,core) { 'use strict';
    var D = (function() {
      function D() {}
      D.decorators = [
        { type: core.Directive, args: [{ selector: '[d]' }] }
      ];
      return D;
    }());
    exports.D = D;
  })));
    `
        }
      ];

      TYPINGS_SRC_FILES = [
        {
          name: _('/src/index.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./internal'), require('./class1'), require('./class2'), require('./missing-class'), require('./flat-file'), require('./func1')) :
      typeof define === 'function' && define.amd ? define('index', ['exports', './internal', './class1', './class2', './missing-class', './flat-file', './func1'], factory) :
      (factory(global.index,global.internal,global.class1,global.class2,global.missing_class,global.flat_file,global.func1));
    }(this, (function (exports,internal,class1,class2,missing_class,flat_file,func1) { 'use strict';
      function __export(m) {
        for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
      }
      var InternalClass = internal.InternalClass;
      __export(class1);
      __export(class2);
    })));
    `
        },
        {
          name: _('/src/class1.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('class1', ['exports'], factory) :
      (factory(global.class1));
    }(this, (function (exports) { 'use strict';
      var Class1 = (function() {
        function Class1() {}
        return Class1;
      }());
      var MissingClass1 = (function() {
        function MissingClass1() {}
        return MissingClass1;
      }());
      exports.Class1 = Class1;
      exports.MissingClass1 = MissingClass1;
    })));
    `
        },
        {
          name: _('/src/class2.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('class2', ['exports'], factory) :
      (factory(global.class2));
    }(this, (function (exports) { 'use strict';
      var Class2 = (function() {
        function Class2() {}
        return Class2;
      }());
      exports.Class2 = Class2;
    })));
    `
        },
        {name: _('/src/func1.js'), contents: 'function mooFn() {} export {mooFn}'}, {
          name: _('/src/internal.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('internal', ['exports'], factory) :
      (factory(global.internal));
    }(this, (function (exports) { 'use strict';
      var InternalClass = (function() {
        function InternalClass() {}
        return InternalClass;
      }());
      var Class2 = (function() {
        function Class2() {}
        return Class2;
      }());
      exports.InternalClass =InternalClass;
      exports.Class2 = Class2;
    })));
    `
        },
        {
          name: _('/src/missing-class.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('missingClass', ['exports'], factory) :
      (factory(global.missingClass));
    }(this, (function (exports) { 'use strict';
      var MissingClass2 = (function() {
        function MissingClass2() {}
        return MissingClass2;
      }());
      exports. MissingClass2 = MissingClass2;
    })));
    `
        },
        {
          name: _('/src/flat-file.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('missingClass', ['exports'], factory) :
      (factory(global.missingClass));
    }(this, (function (exports) { 'use strict';
      var Class1 = (function() {
        function Class1() {}
        return Class1;
      }());
      var MissingClass1 = (function() {
        function MissingClass1() {}
        return MissingClass1;
      }());
      var MissingClass2 = (function() {
        function MissingClass2() {}
        return MissingClass2;
      }());
      var Class3 = (function() {
        function Class3() {}
        return Class3;
      }());
      exports.Class1 = Class1;
      exports.xClass3 = Class3;
      exports.MissingClass1 = MissingClass1;
      exports.MissingClass2 = MissingClass2;
    })));
    `
        }
      ];

      TYPINGS_DTS_FILES = [
        {
          name: _('/typings/index.d.ts'),
          contents: `
              import {InternalClass} from './internal';
              import {mooFn} from './func1';
              export * from './class1';
              export * from './class2';
          `
        },
        {
          name: _('/typings/class1.d.ts'),
          contents: `export declare class Class1 {}\nexport declare class OtherClass {}`
        },
        {
          name: _('/typings/class2.d.ts'),
          contents:
              `export declare class Class2 {}\nexport declare interface SomeInterface {}\nexport {Class3 as xClass3} from './class3';`
        },
        {name: _('/typings/func1.d.ts'), contents: 'export declare function mooFn(): void;'},
        {
          name: _('/typings/internal.d.ts'),
          contents: `export declare class InternalClass {}\nexport declare class Class2 {}`
        },
        {name: _('/typings/class3.d.ts'), contents: `export declare class Class3 {}`},
      ];

      MODULE_WITH_PROVIDERS_PROGRAM = [
        {
          name: _('/src/index.js'),
          contents: `
        (function (global, factory) {
          typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./functions'), require('./methods'), require('./aliased_class')) :
          typeof define === 'function' && define.amd ? define('index', ['exports', './functions', './methods', './aliased_class'], factory) :
          (factory(global.index,global.functions,global.methods,global.aliased_class));
        }(this, (function (exports,functions,methods,aliased_class) { 'use strict';
        }))));
        `,
        },
        {
          name: _('/src/functions.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./module')) :
      typeof define === 'function' && define.amd ? define('functions', ['exports', './module'], factory) :
      (factory(global.functions,global.module));
    }(this, (function (exports,module) { 'use strict';
      var SomeService = (function() {
        function SomeService() {}
        return SomeService;
      }());

      var InternalModule = (function() {
        function InternalModule() {}
        return InternalModule;
      }());

      function aNumber() { return 42; }
      function aString() { return 'foo'; }
      function emptyObject() { return {}; }
      function ngModuleIdentifier() { return { ngModule: InternalModule }; }
      function ngModuleWithEmptyProviders() { return { ngModule: InternalModule, providers: [] }; }
      function ngModuleWithProviders() { return { ngModule: InternalModule, providers: [SomeService] }; }
      function onlyProviders() { return { providers: [SomeService] }; }
      function ngModuleNumber() { return { ngModule: 42 }; }
      function ngModuleString() { return { ngModule: 'foo' }; }
      function ngModuleObject() { return { ngModule: { foo: 42 } }; }
      function externalNgModule() { return { ngModule: module.ExternalModule }; }
      // NOTE: We do not include the "namespaced" export tests in UMD as all UMD exports are already namespaced.
      // function namespacedExternalNgModule() { return { ngModule: mod.ExternalModule }; }

      exports.aNumber = aNumber;
      exports.aString = aString;
      exports.emptyObject = emptyObject;
      exports.ngModuleIdentifier = ngModuleIdentifier;
      exports.ngModuleWithEmptyProviders = ngModuleWithEmptyProviders;
      exports.ngModuleWithProviders = ngModuleWithProviders;
      exports.onlyProviders = onlyProviders;
      exports.ngModuleNumber = ngModuleNumber;
      exports.ngModuleString = ngModuleString;
      exports.ngModuleObject = ngModuleObject;
      exports.externalNgModule = externalNgModule;
      exports.SomeService = SomeService;
      exports.InternalModule = InternalModule;
    })));
    `
        },
        {
          name: _('/src/methods.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('./module')) :
      typeof define === 'function' && define.amd ? define('methods', ['exports', './module'], factory) :
      (factory(global.methods,global.module));
    }(this, (function (exports,module) { 'use strict';
      var SomeService = (function() {
        function SomeService() {}
        return SomeService;
      }());

      var InternalModule = (function() {
        function InternalModule() {}
        InternalModule.prototype = {
          instanceNgModuleIdentifier: function() { return { ngModule: InternalModule }; },
          instanceNgModuleWithEmptyProviders: function() { return { ngModule: InternalModule, providers: [] }; },
          instanceNgModuleWithProviders: function() { return { ngModule: InternalModule, providers: [SomeService] }; },
          instanceExternalNgModule: function() { return { ngModule: module.ExternalModule }; },
        };
        InternalModule.aNumber = function() { return 42; };
        InternalModule.aString = function() { return 'foo'; };
        InternalModule.emptyObject = function() { return {}; };
        InternalModule.ngModuleIdentifier = function() { return { ngModule: InternalModule }; };
        InternalModule.ngModuleWithEmptyProviders = function() { return { ngModule: InternalModule, providers: [] }; };
        InternalModule.ngModuleWithProviders = function() { return { ngModule: InternalModule, providers: [SomeService] }; };
        InternalModule.onlyProviders = function() { return { providers: [SomeService] }; };
        InternalModule.ngModuleNumber = function() { return { ngModule: 42 }; };
        InternalModule.ngModuleString = function() { return { ngModule: 'foo' }; };
        InternalModule.ngModuleObject = function() { return { ngModule: { foo: 42 } }; };
        InternalModule.externalNgModule = function() { return { ngModule: module.ExternalModule }; };
        return InternalModule;
      }());

      exports.SomeService = SomeService;
      exports.InternalModule = InternalModule;
    })));
    `
        },
        {
          name: _('/src/aliased_class.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('aliased_class', ['exports'], factory) :
      (factory(global.aliased_class));
    }(this, (function (exports,module) { 'use strict';
      var AliasedModule = (function() {
        function AliasedModule() {}
        AliasedModule_1 = AliasedModule;
        AliasedModule.forRoot = function() { return { ngModule: AliasedModule_1 }; };
        var AliasedModule_1;
        return AliasedModule;
      }());
      exports.AliasedModule = AliasedModule;
    })));
    `
        },
        {
          name: _('/src/module.js'),
          contents: `
    (function (global, factory) {
      typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
      typeof define === 'function' && define.amd ? define('module', ['exports'], factory) :
      (factory(global.module));
    }(this, (function (exports,module) { 'use strict';
      var ExternalModule = (function() {
        function ExternalModule() {}
        return ExternalModule;
      }());
      exports.ExternalModule = ExternalModule;
    })));
    `
        },
      ];
    });

    describe('getDecoratorsOfDeclaration()', () => {
      it('should find the decorators on a class', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode) !;

        expect(decorators).toBeDefined();
        expect(decorators.length).toEqual(1);

        const decorator = decorators[0];
        expect(decorator.name).toEqual('Directive');
        expect(decorator.import).toEqual({name: 'Directive', from: '@angular/core'});
        expect(decorator.args !.map(arg => arg.getText())).toEqual([
          '{ selector: \'[someDirective]\' }',
        ]);
      });

      it('should find the decorators on a class at the top level', () => {
        loadTestFiles([TOPLEVEL_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(TOPLEVEL_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, TOPLEVEL_DECORATORS_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode) !;

        expect(decorators).toBeDefined();
        expect(decorators.length).toEqual(1);

        const decorator = decorators[0];
        expect(decorator.name).toEqual('Directive');
        expect(decorator.import).toEqual({name: 'Directive', from: '@angular/core'});
        expect(decorator.args !.map(arg => arg.getText())).toEqual([
          '{ selector: \'[someDirective]\' }',
        ]);
      });

      it('should return null if the symbol is not a class', () => {
        loadTestFiles([FOO_FUNCTION_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(FOO_FUNCTION_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const functionNode =
            getDeclaration(program, FOO_FUNCTION_FILE.name, 'foo', isNamedFunctionDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(functionNode);
        expect(decorators).toBe(null);
      });

      it('should return null if there are no decorators', () => {
        loadTestFiles([SIMPLE_CLASS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SIMPLE_CLASS_FILE.name, 'EmptyClass', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode);
        expect(decorators).toBe(null);
      });

      it('should ignore `decorators` if it is not an array literal', () => {
        loadTestFiles([INVALID_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(INVALID_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_DECORATORS_FILE.name, 'NotArrayLiteral', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode);
        expect(decorators).toEqual([]);
      });

      it('should ignore decorator elements that are not object literals', () => {
        loadTestFiles([INVALID_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(INVALID_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_DECORATORS_FILE.name, 'NotObjectLiteral', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode) !;

        expect(decorators.length).toBe(1);
        expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Directive'}));
      });

      it('should ignore decorator elements that have no `type` property', () => {
        loadTestFiles([INVALID_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(INVALID_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_DECORATORS_FILE.name, 'NoTypeProperty', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode) !;

        expect(decorators.length).toBe(1);
        expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Directive'}));
      });

      it('should ignore decorator elements whose `type` value is not an identifier', () => {
        loadTestFiles([INVALID_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(INVALID_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_DECORATORS_FILE.name, 'NotIdentifier', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode) !;

        expect(decorators.length).toBe(1);
        expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Directive'}));
      });

      it('should have import information on decorators', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);

        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const decorators = host.getDecoratorsOfDeclaration(classNode) !;

        expect(decorators.length).toEqual(1);
        expect(decorators[0].import).toEqual({name: 'Directive', from: '@angular/core'});
      });

      it('should find decorated members on a class at the top level', () => {
        loadTestFiles([TOPLEVEL_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(TOPLEVEL_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, TOPLEVEL_DECORATORS_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);

        const input1 = members.find(member => member.name === 'input1') !;
        expect(input1.kind).toEqual(ClassMemberKind.Property);
        expect(input1.isStatic).toEqual(false);
        expect(input1.decorators !.map(d => d.name)).toEqual(['Input']);

        const input2 = members.find(member => member.name === 'input2') !;
        expect(input2.kind).toEqual(ClassMemberKind.Property);
        expect(input2.isStatic).toEqual(false);
        expect(input1.decorators !.map(d => d.name)).toEqual(['Input']);
      });

      describe('(returned decorators `args`)', () => {
        it('should be an empty array if decorator has no `args` property', () => {
          loadTestFiles([INVALID_DECORATOR_ARGS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_DECORATOR_ARGS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_DECORATOR_ARGS_FILE.name, 'NoArgsProperty',
              isNamedVariableDeclaration);
          const decorators = host.getDecoratorsOfDeclaration(classNode) !;

          expect(decorators.length).toBe(1);
          expect(decorators[0].name).toBe('Directive');
          expect(decorators[0].args).toEqual([]);
        });

        it('should be an empty array if decorator\'s `args` has no property assignment', () => {
          loadTestFiles([INVALID_DECORATOR_ARGS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_DECORATOR_ARGS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_DECORATOR_ARGS_FILE.name, 'NoPropertyAssignment',
              isNamedVariableDeclaration);
          const decorators = host.getDecoratorsOfDeclaration(classNode) !;

          expect(decorators.length).toBe(1);
          expect(decorators[0].name).toBe('Directive');
          expect(decorators[0].args).toEqual([]);
        });

        it('should be an empty array if `args` property value is not an array literal', () => {
          loadTestFiles([INVALID_DECORATOR_ARGS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_DECORATOR_ARGS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_DECORATOR_ARGS_FILE.name, 'NotArrayLiteral',
              isNamedVariableDeclaration);
          const decorators = host.getDecoratorsOfDeclaration(classNode) !;

          expect(decorators.length).toBe(1);
          expect(decorators[0].name).toBe('Directive');
          expect(decorators[0].args).toEqual([]);
        });
      });
    });

    describe('getMembersOfClass()', () => {
      it('should find decorated members on a class', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);

        const input1 = members.find(member => member.name === 'input1') !;
        expect(input1.kind).toEqual(ClassMemberKind.Property);
        expect(input1.isStatic).toEqual(false);
        expect(input1.decorators !.map(d => d.name)).toEqual(['Input']);

        const input2 = members.find(member => member.name === 'input2') !;
        expect(input2.kind).toEqual(ClassMemberKind.Property);
        expect(input2.isStatic).toEqual(false);
        expect(input1.decorators !.map(d => d.name)).toEqual(['Input']);
      });

      it('should find non decorated properties on a class', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);

        const instanceProperty = members.find(member => member.name === 'instanceProperty') !;
        expect(instanceProperty.kind).toEqual(ClassMemberKind.Property);
        expect(instanceProperty.isStatic).toEqual(false);
        expect(ts.isBinaryExpression(instanceProperty.implementation !)).toEqual(true);
        expect(instanceProperty.value !.getText()).toEqual(`'instance'`);
      });

      it('should find static methods on a class', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);

        const staticMethod = members.find(member => member.name === 'staticMethod') !;
        expect(staticMethod.kind).toEqual(ClassMemberKind.Method);
        expect(staticMethod.isStatic).toEqual(true);
        expect(ts.isFunctionExpression(staticMethod.implementation !)).toEqual(true);
      });

      it('should find static properties on a class', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);

        const staticProperty = members.find(member => member.name === 'staticProperty') !;
        expect(staticProperty.kind).toEqual(ClassMemberKind.Property);
        expect(staticProperty.isStatic).toEqual(true);
        expect(ts.isPropertyAccessExpression(staticProperty.implementation !)).toEqual(true);
        expect(staticProperty.value !.getText()).toEqual(`'static'`);
      });

      it('should throw if the symbol is not a class', () => {
        loadTestFiles([FOO_FUNCTION_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(FOO_FUNCTION_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const functionNode =
            getDeclaration(program, FOO_FUNCTION_FILE.name, 'foo', isNamedFunctionDeclaration);
        expect(() => {
          host.getMembersOfClass(functionNode);
        }).toThrowError(`Attempted to get members of a non-class: "function foo() {}"`);
      });

      it('should return an empty array if there are no prop decorators', () => {
        loadTestFiles([SIMPLE_CLASS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SIMPLE_CLASS_FILE.name, 'EmptyClass', isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);

        expect(members).toEqual([]);
      });

      it('should not process decorated properties in `propDecorators` if it is not an object literal',
         () => {
           loadTestFiles([INVALID_PROP_DECORATORS_FILE]);
           const {program, host: compilerHost} =
               makeTestBundleProgram(INVALID_PROP_DECORATORS_FILE.name);
           const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
           const classNode = getDeclaration(
               program, INVALID_PROP_DECORATORS_FILE.name, 'NotObjectLiteral',
               isNamedVariableDeclaration);
           const members = host.getMembersOfClass(classNode);

           expect(members.map(member => member.name)).not.toContain('prop');
         });

      it('should ignore prop decorator elements that are not object literals', () => {
        loadTestFiles([INVALID_PROP_DECORATORS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_PROP_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_PROP_DECORATORS_FILE.name, 'NotObjectLiteralProp',
            isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);
        const prop = members.find(m => m.name === 'prop') !;
        const decorators = prop.decorators !;

        expect(decorators.length).toBe(1);
        expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Directive'}));
      });

      it('should ignore prop decorator elements that have no `type` property', () => {
        loadTestFiles([INVALID_PROP_DECORATORS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_PROP_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_PROP_DECORATORS_FILE.name, 'NoTypeProperty',
            isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);
        const prop = members.find(m => m.name === 'prop') !;
        const decorators = prop.decorators !;

        expect(decorators.length).toBe(1);
        expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Directive'}));
      });
    });

    it('should ignore prop decorator elements whose `type` value is not an identifier', () => {
      loadTestFiles([INVALID_PROP_DECORATORS_FILE]);
      const {program, host: compilerHost} =
          makeTestBundleProgram(INVALID_PROP_DECORATORS_FILE.name);
      const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
      const classNode = getDeclaration(
          program, INVALID_PROP_DECORATORS_FILE.name, 'NotIdentifier', isNamedVariableDeclaration);
      const members = host.getMembersOfClass(classNode);
      const prop = members.find(m => m.name === 'prop') !;
      const decorators = prop.decorators !;

      expect(decorators.length).toBe(1);
      expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Directive'}));
    });

    it('should have import information on decorators', () => {
      loadTestFiles([SOME_DIRECTIVE_FILE]);
      const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
      const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);

      const classNode = getDeclaration(
          program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
      const decorators = host.getDecoratorsOfDeclaration(classNode) !;

      expect(decorators.length).toEqual(1);
      expect(decorators[0].import).toEqual({name: 'Directive', from: '@angular/core'});
    });

    describe('(returned prop decorators `args`)', () => {
      it('should be an empty array if prop decorator has no `args` property', () => {
        loadTestFiles([INVALID_PROP_DECORATOR_ARGS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_PROP_DECORATOR_ARGS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_PROP_DECORATOR_ARGS_FILE.name, 'NoArgsProperty',
            isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);
        const prop = members.find(m => m.name === 'prop') !;
        const decorators = prop.decorators !;

        expect(decorators.length).toBe(1);
        expect(decorators[0].name).toBe('Input');
        expect(decorators[0].args).toEqual([]);
      });

      it('should be an empty array if prop decorator\'s `args` has no property assignment', () => {
        loadTestFiles([INVALID_PROP_DECORATOR_ARGS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_PROP_DECORATOR_ARGS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_PROP_DECORATOR_ARGS_FILE.name, 'NoPropertyAssignment',
            isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);
        const prop = members.find(m => m.name === 'prop') !;
        const decorators = prop.decorators !;

        expect(decorators.length).toBe(1);
        expect(decorators[0].name).toBe('Input');
        expect(decorators[0].args).toEqual([]);
      });

      it('should be an empty array if `args` property value is not an array literal', () => {
        loadTestFiles([INVALID_PROP_DECORATOR_ARGS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_PROP_DECORATOR_ARGS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_PROP_DECORATOR_ARGS_FILE.name, 'NotArrayLiteral',
            isNamedVariableDeclaration);
        const members = host.getMembersOfClass(classNode);
        const prop = members.find(m => m.name === 'prop') !;
        const decorators = prop.decorators !;

        expect(decorators.length).toBe(1);
        expect(decorators[0].name).toBe('Input');
        expect(decorators[0].args).toEqual([]);
      });
    });

    describe('getConstructorParameters', () => {
      it('should find the decorated constructor parameters', () => {
        loadTestFiles([SOME_DIRECTIVE_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const parameters = host.getConstructorParameters(classNode);

        expect(parameters).toBeDefined();
        expect(parameters !.map(parameter => parameter.name)).toEqual([
          '_viewContainer', '_template', 'injected'
        ]);
        expectTypeValueReferencesForParameters(parameters !, [
          'ViewContainerRef',
          'TemplateRef',
          null,
        ]);
      });

      it('should find the decorated constructor parameters at the top level', () => {
        loadTestFiles([TOPLEVEL_DECORATORS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(TOPLEVEL_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, TOPLEVEL_DECORATORS_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
        const parameters = host.getConstructorParameters(classNode);

        expect(parameters).toBeDefined();
        expect(parameters !.map(parameter => parameter.name)).toEqual([
          '_viewContainer', '_template', 'injected'
        ]);
        expectTypeValueReferencesForParameters(parameters !, [
          'ViewContainerRef',
          'TemplateRef',
          null,
        ]);
      });

      it('should accept `ctorParameters` as an array', () => {
        loadTestFiles([CTOR_DECORATORS_ARRAY_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(CTOR_DECORATORS_ARRAY_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, CTOR_DECORATORS_ARRAY_FILE.name, 'CtorDecoratedAsArray',
            isNamedVariableDeclaration);
        const parameters = host.getConstructorParameters(classNode) !;

        expect(parameters).toBeDefined();
        expect(parameters.map(parameter => parameter.name)).toEqual(['arg1']);
        expectTypeValueReferencesForParameters(parameters, ['ParamType']);
      });

      it('should throw if the symbol is not a class', () => {
        loadTestFiles([FOO_FUNCTION_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(FOO_FUNCTION_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const functionNode =
            getDeclaration(program, FOO_FUNCTION_FILE.name, 'foo', isNamedFunctionDeclaration);
        expect(() => { host.getConstructorParameters(functionNode); })
            .toThrowError(
                'Attempted to get constructor parameters of a non-class: "function foo() {}"');
      });

      // In ES5 there is no such thing as a constructor-less class
      // it('should return `null` if there is no constructor', () => { });

      it('should return an array even if there are no decorators', () => {
        loadTestFiles([SIMPLE_CLASS_FILE]);
        const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, SIMPLE_CLASS_FILE.name, 'NoDecoratorConstructorClass',
            isNamedVariableDeclaration);
        const parameters = host.getConstructorParameters(classNode);

        expect(parameters).toEqual(jasmine.any(Array));
        expect(parameters !.length).toEqual(1);
        expect(parameters ![0].name).toEqual('foo');
        expect(parameters ![0].decorators).toBe(null);
      });

      it('should return an empty array if there are no constructor parameters', () => {
        loadTestFiles([INVALID_CTOR_DECORATORS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_CTOR_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_CTOR_DECORATORS_FILE.name, 'NoParameters', isNamedVariableDeclaration);
        const parameters = host.getConstructorParameters(classNode);

        expect(parameters).toEqual([]);
      });

      // In ES5 there are no arrow functions
      // it('should ignore `ctorParameters` if it is an arrow function', () => { });

      it('should ignore `ctorParameters` if it does not return an array literal', () => {
        loadTestFiles([INVALID_CTOR_DECORATORS_FILE]);
        const {program, host: compilerHost} =
            makeTestBundleProgram(INVALID_CTOR_DECORATORS_FILE.name);
        const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
        const classNode = getDeclaration(
            program, INVALID_CTOR_DECORATORS_FILE.name, 'NotArrayLiteral',
            isNamedVariableDeclaration);
        const parameters = host.getConstructorParameters(classNode);

        expect(parameters !.length).toBe(1);
        expect(parameters ![0]).toEqual(jasmine.objectContaining<CtorParameter>({
          name: 'arg1',
          decorators: null,
        }));
      });

      describe('(returned parameters `decorators`)', () => {
        it('should ignore param decorator elements that are not object literals', () => {
          loadTestFiles([INVALID_CTOR_DECORATORS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_CTOR_DECORATORS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_CTOR_DECORATORS_FILE.name, 'NotObjectLiteral',
              isNamedVariableDeclaration);
          const parameters = host.getConstructorParameters(classNode);

          expect(parameters !.length).toBe(2);
          expect(parameters ![0]).toEqual(jasmine.objectContaining<CtorParameter>({
            name: 'arg1',
            decorators: null,
          }));
          expect(parameters ![1]).toEqual(jasmine.objectContaining<CtorParameter>({
            name: 'arg2',
            decorators: jasmine.any(Array) as any
          }));
        });

        it('should ignore param decorator elements that have no `type` property', () => {
          loadTestFiles([INVALID_CTOR_DECORATORS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_CTOR_DECORATORS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_CTOR_DECORATORS_FILE.name, 'NoTypeProperty',
              isNamedVariableDeclaration);
          const parameters = host.getConstructorParameters(classNode);
          const decorators = parameters ![0].decorators !;

          expect(decorators.length).toBe(1);
          expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Inject'}));
        });

        it('should ignore param decorator elements whose `type` value is not an identifier', () => {
          loadTestFiles([INVALID_CTOR_DECORATORS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_CTOR_DECORATORS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_CTOR_DECORATORS_FILE.name, 'NotIdentifier',
              isNamedVariableDeclaration);
          const parameters = host.getConstructorParameters(classNode);
          const decorators = parameters ![0].decorators !;

          expect(decorators.length).toBe(1);
          expect(decorators[0]).toEqual(jasmine.objectContaining({name: 'Inject'}));
        });

        it('should use `getImportOfIdentifier()` to retrieve import info', () => {
          loadTestFiles([SOME_DIRECTIVE_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
          const mockImportInfo: Import = {from: '@angular/core', name: 'Directive'};
          const spy = spyOn(UmdReflectionHost.prototype, 'getImportOfIdentifier')
                          .and.returnValue(mockImportInfo);

          const parameters = host.getConstructorParameters(classNode);
          const decorators = parameters ![2].decorators !;

          expect(decorators.length).toEqual(1);
          expect(decorators[0].import).toBe(mockImportInfo);

          const typeIdentifier = spy.calls.mostRecent().args[0] as ts.Identifier;
          expect(typeIdentifier.text).toBe('Inject');
        });
      });

      describe('(returned parameters `decorators.args`)', () => {
        it('should be an empty array if param decorator has no `args` property', () => {
          loadTestFiles([INVALID_CTOR_DECORATOR_ARGS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_CTOR_DECORATOR_ARGS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_CTOR_DECORATOR_ARGS_FILE.name, 'NoArgsProperty',
              isNamedVariableDeclaration);
          const parameters = host.getConstructorParameters(classNode);
          expect(parameters !.length).toBe(1);
          const decorators = parameters ![0].decorators !;

          expect(decorators.length).toBe(1);
          expect(decorators[0].name).toBe('Inject');
          expect(decorators[0].args).toEqual([]);
        });

        it('should be an empty array if param decorator\'s `args` has no property assignment',
           () => {
             loadTestFiles([INVALID_CTOR_DECORATOR_ARGS_FILE]);
             const {program, host: compilerHost} =
                 makeTestBundleProgram(INVALID_CTOR_DECORATOR_ARGS_FILE.name);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const classNode = getDeclaration(
                 program, INVALID_CTOR_DECORATOR_ARGS_FILE.name, 'NoPropertyAssignment',
                 isNamedVariableDeclaration);
             const parameters = host.getConstructorParameters(classNode);
             const decorators = parameters ![0].decorators !;

             expect(decorators.length).toBe(1);
             expect(decorators[0].name).toBe('Inject');
             expect(decorators[0].args).toEqual([]);
           });

        it('should be an empty array if `args` property value is not an array literal', () => {
          loadTestFiles([INVALID_CTOR_DECORATOR_ARGS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(INVALID_CTOR_DECORATOR_ARGS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, INVALID_CTOR_DECORATOR_ARGS_FILE.name, 'NotArrayLiteral',
              isNamedVariableDeclaration);
          const parameters = host.getConstructorParameters(classNode);
          const decorators = parameters ![0].decorators !;

          expect(decorators.length).toBe(1);
          expect(decorators[0].name).toBe('Inject');
          expect(decorators[0].args).toEqual([]);
        });
      });
    });

    describe('getDefinitionOfFunction()', () => {
      it('should return an object describing the function declaration passed as an argument',
         () => {
           loadTestFiles([FUNCTION_BODY_FILE]);
           const {program, host: compilerHost} = makeTestBundleProgram(FUNCTION_BODY_FILE.name);
           const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);

           const fooNode = getDeclaration(
               program, FUNCTION_BODY_FILE.name, 'foo', isNamedFunctionDeclaration) !;
           const fooDef = host.getDefinitionOfFunction(fooNode) !;
           expect(fooDef.node).toBe(fooNode);
           expect(fooDef.body !.length).toEqual(1);
           expect(fooDef.body ![0].getText()).toEqual(`return x;`);
           expect(fooDef.parameters.length).toEqual(1);
           expect(fooDef.parameters[0].name).toEqual('x');
           expect(fooDef.parameters[0].initializer).toBe(null);

           const barNode = getDeclaration(
               program, FUNCTION_BODY_FILE.name, 'bar', isNamedFunctionDeclaration) !;
           const barDef = host.getDefinitionOfFunction(barNode) !;
           expect(barDef.node).toBe(barNode);
           expect(barDef.body !.length).toEqual(1);
           expect(ts.isReturnStatement(barDef.body ![0])).toBeTruthy();
           expect(barDef.body ![0].getText()).toEqual(`return x + y;`);
           expect(barDef.parameters.length).toEqual(2);
           expect(barDef.parameters[0].name).toEqual('x');
           expect(fooDef.parameters[0].initializer).toBe(null);
           expect(barDef.parameters[1].name).toEqual('y');
           expect(barDef.parameters[1].initializer !.getText()).toEqual('42');

           const bazNode = getDeclaration(
               program, FUNCTION_BODY_FILE.name, 'baz', isNamedFunctionDeclaration) !;
           const bazDef = host.getDefinitionOfFunction(bazNode) !;
           expect(bazDef.node).toBe(bazNode);
           expect(bazDef.body !.length).toEqual(3);
           expect(bazDef.parameters.length).toEqual(1);
           expect(bazDef.parameters[0].name).toEqual('x');
           expect(bazDef.parameters[0].initializer).toBe(null);

           const quxNode = getDeclaration(
               program, FUNCTION_BODY_FILE.name, 'qux', isNamedFunctionDeclaration) !;
           const quxDef = host.getDefinitionOfFunction(quxNode) !;
           expect(quxDef.node).toBe(quxNode);
           expect(quxDef.body !.length).toEqual(2);
           expect(quxDef.parameters.length).toEqual(1);
           expect(quxDef.parameters[0].name).toEqual('x');
           expect(quxDef.parameters[0].initializer).toBe(null);
         });

      describe('getImportOfIdentifier', () => {
        it('should find the import of an identifier', () => {
          loadTestFiles(IMPORTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/index.js'));
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const variableNode =
              getDeclaration(program, _('/file_b.js'), 'b', isNamedVariableDeclaration);
          const identifier = (variableNode.initializer &&
                              ts.isPropertyAccessExpression(variableNode.initializer)) ?
              variableNode.initializer.name :
              null;

          expect(identifier).not.toBe(null);
          const importOfIdent = host.getImportOfIdentifier(identifier !);
          expect(importOfIdent).toEqual({name: 'a', from: './file_a'});
        });

        it('should return null if the identifier was not imported', () => {
          loadTestFiles(IMPORTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/index.js'));
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const variableNode =
              getDeclaration(program, _('/file_b.js'), 'd', isNamedVariableDeclaration);
          const importOfIdent =
              host.getImportOfIdentifier(variableNode.initializer as ts.Identifier);

          expect(importOfIdent).toBeNull();
        });

        it('should handle factory functions not wrapped in parentheses', () => {
          loadTestFiles(IMPORTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/index.js'));
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const variableNode =
              getDeclaration(program, _('/file_c.js'), 'c', isNamedVariableDeclaration);
          const identifier = (variableNode.initializer &&
                              ts.isPropertyAccessExpression(variableNode.initializer)) ?
              variableNode.initializer.name :
              null;

          expect(identifier).not.toBe(null);
          const importOfIdent = host.getImportOfIdentifier(identifier !);
          expect(importOfIdent).toEqual({name: 'a', from: './file_a'});
        });
      });

      describe('getDeclarationOfIdentifier', () => {
        it('should return the declaration of a locally defined identifier', () => {
          loadTestFiles([SOME_DIRECTIVE_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
          const ctrDecorators = host.getConstructorParameters(classNode) !;
          const identifierOfViewContainerRef = (ctrDecorators[0].typeValueReference !as{
                                                 local: true,
                                                 expression: ts.Identifier,
                                                 defaultImportStatement: null,
                                               }).expression;

          const expectedDeclarationNode = getDeclaration(
              program, SOME_DIRECTIVE_FILE.name, 'ViewContainerRef', isNamedVariableDeclaration);
          const actualDeclaration = host.getDeclarationOfIdentifier(identifierOfViewContainerRef);
          expect(actualDeclaration).not.toBe(null);
          expect(actualDeclaration !.node).toBe(expectedDeclarationNode);
          expect(actualDeclaration !.viaModule).toBe(null);
        });

        it('should return the source-file of an import namespace', () => {
          loadFakeCore(getFileSystem());
          loadTestFiles([SOME_DIRECTIVE_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(SOME_DIRECTIVE_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode = getDeclaration(
              program, SOME_DIRECTIVE_FILE.name, 'SomeDirective', isNamedVariableDeclaration);
          const classDecorators = host.getDecoratorsOfDeclaration(classNode) !;
          const identifierOfDirective = (((classDecorators[0].node as ts.ObjectLiteralExpression)
                                              .properties[0] as ts.PropertyAssignment)
                                             .initializer as ts.PropertyAccessExpression)
                                            .expression as ts.Identifier;

          const expectedDeclarationNode =
              getSourceFileOrError(program, _('/node_modules/@angular/core/index.d.ts'));
          const actualDeclaration = host.getDeclarationOfIdentifier(identifierOfDirective);
          expect(actualDeclaration).not.toBe(null);
          expect(actualDeclaration !.node).toBe(expectedDeclarationNode);
          expect(actualDeclaration !.viaModule).toBe('@angular/core');
        });
      });

      describe('getExportsOfModule()', () => {
        it('should return a map of all the exports from a given module', () => {
          loadFakeCore(getFileSystem());
          loadTestFiles(EXPORTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/index.js'));
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const file = getSourceFileOrError(program, _('/b_module.js'));
          const exportDeclarations = host.getExportsOfModule(file);
          expect(exportDeclarations).not.toBe(null);
          expect(Array.from(exportDeclarations !.entries())
                     .map(entry => [entry[0], entry[1].node !.getText(), entry[1].viaModule]))
              .toEqual([
                ['Directive', `Directive: FnWithArg<(clazz: any) => any>`, '@angular/core'],
                ['a', `a = 'a'`, '/a_module'],
                ['b', `b = a_module.a`, null],
                ['c', `a = 'a'`, '/a_module'],
                ['d', `b = a_module.a`, null],
                ['e', `e = 'e'`, null],
                ['DirectiveX', `Directive: FnWithArg<(clazz: any) => any>`, '@angular/core'],
                [
                  'SomeClass', `SomeClass = (function() {
    function SomeClass() {}
    return SomeClass;
  }())`,
                  null
                ],
              ]);
        });

        // Currently we do not support UMD versions of `export * from 'x';`
        // because it gets compiled to something like:
        //
        //     __export(m) {
        //       for (var p in m) if (!exports.hasOwnProperty(p)) exports[p] = m[p];
        //     }
        //     __export(x);
        //
        // So far all UMD formatted entry-points are flat so this should not occur.
        // If it does later then we should implement parsing.
      });

      describe('getClassSymbol()', () => {
        it('should return the class symbol for an ES2015 class', () => {
          loadTestFiles([SIMPLE_ES2015_CLASS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(SIMPLE_ES2015_CLASS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const node = getDeclaration(
              program, SIMPLE_ES2015_CLASS_FILE.name, 'EmptyClass', isNamedClassDeclaration);
          const classSymbol = host.getClassSymbol(node);

          expect(classSymbol).toBeDefined();
          expect(classSymbol !.declaration.valueDeclaration).toBe(node);
          expect(classSymbol !.implementation.valueDeclaration).toBe(node);
        });

        it('should return the class symbol for an ES5 class (outer variable declaration)', () => {
          loadTestFiles([SIMPLE_CLASS_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const outerNode = getDeclaration(
              program, SIMPLE_CLASS_FILE.name, 'EmptyClass', isNamedVariableDeclaration);
          const innerNode = getIifeBody(outerNode) !.statements.find(isNamedFunctionDeclaration) !;
          const classSymbol = host.getClassSymbol(outerNode);

          expect(classSymbol).toBeDefined();
          expect(classSymbol !.declaration.valueDeclaration).toBe(outerNode);
          expect(classSymbol !.implementation.valueDeclaration).toBe(innerNode);
        });

        it('should return the class symbol for an ES5 class (inner function declaration)', () => {
          loadTestFiles([SIMPLE_CLASS_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const outerNode = getDeclaration(
              program, SIMPLE_CLASS_FILE.name, 'EmptyClass', isNamedVariableDeclaration);
          const innerNode = getIifeBody(outerNode) !.statements.find(isNamedFunctionDeclaration) !;
          const classSymbol = host.getClassSymbol(innerNode);

          expect(classSymbol).toBeDefined();
          expect(classSymbol !.declaration.valueDeclaration).toBe(outerNode);
          expect(classSymbol !.implementation.valueDeclaration).toBe(innerNode);
        });

        it('should return the same class symbol (of the outer declaration) for outer and inner declarations',
           () => {
             loadTestFiles([SIMPLE_CLASS_FILE]);
             const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const outerNode = getDeclaration(
                 program, SIMPLE_CLASS_FILE.name, 'EmptyClass', isNamedVariableDeclaration);
             const innerNode =
                 getIifeBody(outerNode) !.statements.find(isNamedFunctionDeclaration) !;

             const innerSymbol = host.getClassSymbol(innerNode) !;
             const outerSymbol = host.getClassSymbol(outerNode) !;
             expect(innerSymbol.declaration).toBe(outerSymbol.declaration);
             expect(innerSymbol.implementation).toBe(outerSymbol.implementation);
           });

        it('should return undefined if node is not an ES5 class', () => {
          loadTestFiles([FOO_FUNCTION_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(FOO_FUNCTION_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const node =
              getDeclaration(program, FOO_FUNCTION_FILE.name, 'foo', isNamedFunctionDeclaration);
          const classSymbol = host.getClassSymbol(node);

          expect(classSymbol).toBeUndefined();
        });

        it('should return undefined if variable declaration is not initialized using an IIFE',
           () => {
             const testFile = {
               name: _('/test.js'),
               contents: `var MyClass = null;`,
             };
             loadTestFiles([testFile]);
             const {program, host: compilerHost} = makeTestBundleProgram(testFile.name);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const node =
                 getDeclaration(program, testFile.name, 'MyClass', isNamedVariableDeclaration);
             const classSymbol = host.getClassSymbol(node);

             expect(classSymbol).toBeUndefined();
           });
      });

      describe('isClass()', () => {
        it('should return true if a given node is a TS class declaration', () => {
          loadTestFiles([SIMPLE_ES2015_CLASS_FILE]);
          const {program, host: compilerHost} =
              makeTestBundleProgram(SIMPLE_ES2015_CLASS_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const node = getDeclaration(
              program, SIMPLE_ES2015_CLASS_FILE.name, 'EmptyClass', isNamedClassDeclaration);
          expect(host.isClass(node)).toBe(true);
        });

        it('should return true if a given node is the outer variable declaration of a class',
           () => {
             loadTestFiles([SIMPLE_CLASS_FILE]);
             const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const node = getDeclaration(
                 program, SIMPLE_CLASS_FILE.name, 'EmptyClass', ts.isVariableDeclaration);
             expect(host.isClass(node)).toBe(true);
           });

        it('should return true if a given node is the inner variable declaration of a class',
           () => {
             loadTestFiles([SIMPLE_CLASS_FILE]);
             const {program, host: compilerHost} = makeTestBundleProgram(SIMPLE_CLASS_FILE.name);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const outerNode = getDeclaration(
                 program, SIMPLE_CLASS_FILE.name, 'EmptyClass', ts.isVariableDeclaration);
             const innerNode =
                 getIifeBody(outerNode) !.statements.find(isNamedFunctionDeclaration) !;
             expect(host.isClass(innerNode)).toBe(true);
           });

        it('should return false if a given node is a function declaration', () => {
          loadTestFiles([FOO_FUNCTION_FILE]);
          const {program, host: compilerHost} = makeTestBundleProgram(FOO_FUNCTION_FILE.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const node =
              getDeclaration(program, FOO_FUNCTION_FILE.name, 'foo', isNamedFunctionDeclaration);
          expect(host.isClass(node)).toBe(false);
        });
      });

      describe('hasBaseClass()', () => {
        function hasBaseClass(source: string) {
          const file = {
            name: _('/synthesized_constructors.js'),
            contents: source,
          };

          loadTestFiles([file]);
          const {program, host: compilerHost} = makeTestBundleProgram(file.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode =
              getDeclaration(program, file.name, 'TestClass', isNamedVariableDeclaration);
          return host.hasBaseClass(classNode);
        }

        it('should consider an IIFE with _super parameter as having a base class', () => {
          const result = hasBaseClass(`
        var TestClass = /** @class */ (function (_super) {
          __extends(TestClass, _super);
          function TestClass() {}
          return TestClass;
        }(null));`);
          expect(result).toBe(true);
        });

        it('should consider an IIFE with a unique name generated for the _super parameter as having a base class',
           () => {
             const result = hasBaseClass(`
        var TestClass = /** @class */ (function (_super_1) {
          __extends(TestClass, _super_1);
          function TestClass() {}
          return TestClass;
        }(null));`);
             expect(result).toBe(true);
           });

        it('should not consider an IIFE without parameter as having a base class', () => {
          const result = hasBaseClass(`
        var TestClass = /** @class */ (function () {
          __extends(TestClass, _super);
          function TestClass() {}
          return TestClass;
        }(null));`);
          expect(result).toBe(false);
        });
      });

      describe('getBaseClassExpression()', () => {
        function getBaseClassIdentifier(source: string): ts.Identifier|null {
          const file = {
            name: _('/synthesized_constructors.js'),
            contents: source,
          };

          loadTestFiles([file]);
          const {program, host: compilerHost} = makeTestBundleProgram(file.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode =
              getDeclaration(program, file.name, 'TestClass', isNamedVariableDeclaration);
          const expression = host.getBaseClassExpression(classNode);
          if (expression !== null && !ts.isIdentifier(expression)) {
            throw new Error(
                'Expected class to inherit via an identifier but got: ' + expression.getText());
          }
          return expression;
        }

        it('should find the base class of an IIFE with _super parameter', () => {
          const identifier = getBaseClassIdentifier(`
          var BaseClass = /** @class */ (function () {
            function BaseClass() {}
            return BaseClass;
          }());
          var TestClass = /** @class */ (function (_super) {
            __extends(TestClass, _super);
            function TestClass() {}
            return TestClass;
          }(BaseClass));`);
          expect(identifier !.text).toBe('BaseClass');
        });

        it('should find the base class of an IIFE with a unique name generated for the _super parameter',
           () => {
             const identifier = getBaseClassIdentifier(`
          var BaseClass = /** @class */ (function () {
            function BaseClass() {}
            return BaseClass;
          }());
          var TestClass = /** @class */ (function (_super_1) {
            __extends(TestClass, _super_1);
            function TestClass() {}
            return TestClass;
          }(BaseClass));`);
             expect(identifier !.text).toBe('BaseClass');
           });

        it('should not find a base class for an IIFE without parameter', () => {
          const identifier = getBaseClassIdentifier(`
          var BaseClass = /** @class */ (function () {
            function BaseClass() {}
            return BaseClass;
          }());
          var TestClass = /** @class */ (function () {
            __extends(TestClass, _super);
            function TestClass() {}
            return TestClass;
          }(BaseClass));`);
          expect(identifier).toBe(null);
        });

        it('should find a dynamic base class expression of an IIFE', () => {
          const file = {
            name: _('/synthesized_constructors.js'),
            contents: `
            var BaseClass = /** @class */ (function () {
              function BaseClass() {}
              return BaseClass;
            }());
            function foo() { return BaseClass; }
            var TestClass = /** @class */ (function (_super) {
              __extends(TestClass, _super);
              function TestClass() {}
              return TestClass;
            }(foo()));`,
          };

          loadTestFiles([file]);
          const {program, host: compilerHost} = makeTestBundleProgram(file.name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const classNode =
              getDeclaration(program, file.name, 'TestClass', isNamedVariableDeclaration);
          const expression = host.getBaseClassExpression(classNode) !;
          expect(expression.getText()).toBe('foo()');
        });
      });

      describe('findClassSymbols()', () => {
        it('should return an array of all classes in the given source file', () => {
          loadTestFiles(DECORATED_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(DECORATED_FILES[0].name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const primaryFile = getSourceFileOrError(program, DECORATED_FILES[0].name);
          const secondaryFile = getSourceFileOrError(program, DECORATED_FILES[1].name);

          const classSymbolsPrimary = host.findClassSymbols(primaryFile);
          expect(classSymbolsPrimary.length).toEqual(2);
          expect(classSymbolsPrimary.map(c => c.name)).toEqual(['A', 'B']);

          const classSymbolsSecondary = host.findClassSymbols(secondaryFile);
          expect(classSymbolsSecondary.length).toEqual(1);
          expect(classSymbolsSecondary.map(c => c.name)).toEqual(['D']);
        });
      });

      describe('getDecoratorsOfSymbol()', () => {
        it('should return decorators of class symbol', () => {
          loadTestFiles(DECORATED_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(DECORATED_FILES[0].name);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const primaryFile = getSourceFileOrError(program, DECORATED_FILES[0].name);
          const secondaryFile = getSourceFileOrError(program, DECORATED_FILES[1].name);

          const classSymbolsPrimary = host.findClassSymbols(primaryFile);
          const classDecoratorsPrimary =
              classSymbolsPrimary.map(s => host.getDecoratorsOfSymbol(s));
          expect(classDecoratorsPrimary.length).toEqual(2);
          expect(classDecoratorsPrimary[0] !.map(d => d.name)).toEqual(['Directive']);
          expect(classDecoratorsPrimary[1] !.map(d => d.name)).toEqual(['Directive']);

          const classSymbolsSecondary = host.findClassSymbols(secondaryFile);
          const classDecoratorsSecondary =
              classSymbolsSecondary.map(s => host.getDecoratorsOfSymbol(s));
          expect(classDecoratorsSecondary.length).toEqual(1);
          expect(classDecoratorsSecondary[0] !.map(d => d.name)).toEqual(['Directive']);
        });
      });

      describe('getDtsDeclarationsOfClass()', () => {
        it('should find the dts declaration that has the same relative path to the source file',
           () => {
             loadTestFiles(TYPINGS_SRC_FILES);
             loadTestFiles(TYPINGS_DTS_FILES);
             const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
             const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
             const class1 =
                 getDeclaration(program, _('/src/class1.js'), 'Class1', ts.isVariableDeclaration);
             const host =
                 new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

             const dtsDeclaration = host.getDtsDeclaration(class1);
             expect(dtsDeclaration !.getSourceFile().fileName).toEqual(_('/typings/class1.d.ts'));
           });

        it('should find the dts declaration for exported functions', () => {
          loadTestFiles(TYPINGS_SRC_FILES);
          loadTestFiles(TYPINGS_DTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
          const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
          const mooFn =
              getDeclaration(program, _('/src/func1.js'), 'mooFn', ts.isFunctionDeclaration);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

          const dtsDeclaration = host.getDtsDeclaration(mooFn);
          expect(dtsDeclaration !.getSourceFile().fileName).toEqual(_('/typings/func1.d.ts'));
        });

        it('should return null if there is no matching class in the matching dts file', () => {
          loadTestFiles(TYPINGS_SRC_FILES);
          loadTestFiles(TYPINGS_DTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
          const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
          const missingClass = getDeclaration(
              program, _('/src/class1.js'), 'MissingClass1', ts.isVariableDeclaration);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

          expect(host.getDtsDeclaration(missingClass)).toBe(null);
        });

        it('should return null if there is no matching dts file', () => {
          loadTestFiles(TYPINGS_SRC_FILES);
          loadTestFiles(TYPINGS_DTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
          const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
          const missingClass = getDeclaration(
              program, _('/src/missing-class.js'), 'MissingClass2', ts.isVariableDeclaration);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

          expect(host.getDtsDeclaration(missingClass)).toBe(null);
        });

        it('should find the dts file that contains a matching class declaration, even if the source files do not match',
           () => {
             loadTestFiles(TYPINGS_SRC_FILES);
             loadTestFiles(TYPINGS_DTS_FILES);
             const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
             const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
             const class1 = getDeclaration(
                 program, _('/src/flat-file.js'), 'Class1', ts.isVariableDeclaration);
             const host =
                 new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

             const dtsDeclaration = host.getDtsDeclaration(class1);
             expect(dtsDeclaration !.getSourceFile().fileName).toEqual(_('/typings/class1.d.ts'));
           });

        it('should find aliased exports', () => {
          loadTestFiles(TYPINGS_SRC_FILES);
          loadTestFiles(TYPINGS_DTS_FILES);
          const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
          const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
          const class3 =
              getDeclaration(program, _('/src/flat-file.js'), 'Class3', ts.isVariableDeclaration);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

          const dtsDeclaration = host.getDtsDeclaration(class3);
          expect(dtsDeclaration !.getSourceFile().fileName).toEqual(_('/typings/class3.d.ts'));
        });

        it('should find the dts file that contains a matching class declaration, even if the class is not publicly exported',
           () => {
             loadTestFiles(TYPINGS_SRC_FILES);
             loadTestFiles(TYPINGS_DTS_FILES);
             const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
             const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
             const internalClass = getDeclaration(
                 program, _('/src/internal.js'), 'InternalClass', ts.isVariableDeclaration);
             const host =
                 new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

             const dtsDeclaration = host.getDtsDeclaration(internalClass);
             expect(dtsDeclaration !.getSourceFile().fileName).toEqual(_('/typings/internal.d.ts'));
           });

        it('should prefer the publicly exported class if there are multiple classes with the same name',
           () => {
             loadTestFiles(TYPINGS_SRC_FILES);
             loadTestFiles(TYPINGS_DTS_FILES);
             const {program, host: compilerHost} = makeTestBundleProgram(_('/src/index.js'));
             const dts = makeTestBundleProgram(_('/typings/index.d.ts'));
             const class2 =
                 getDeclaration(program, _('/src/class2.js'), 'Class2', ts.isVariableDeclaration);
             const internalClass2 =
                 getDeclaration(program, _('/src/internal.js'), 'Class2', ts.isVariableDeclaration);
             const host =
                 new UmdReflectionHost(new MockLogger(), false, program, compilerHost, dts);

             const class2DtsDeclaration = host.getDtsDeclaration(class2);
             expect(class2DtsDeclaration !.getSourceFile().fileName)
                 .toEqual(_('/typings/class2.d.ts'));

             const internalClass2DtsDeclaration = host.getDtsDeclaration(internalClass2);
             expect(internalClass2DtsDeclaration !.getSourceFile().fileName)
                 .toEqual(_('/typings/class2.d.ts'));
           });
      });

      describe('getModuleWithProvidersFunctions', () => {
        it('should find every exported function that returns an object that looks like a ModuleWithProviders object',
           () => {
             loadTestFiles(MODULE_WITH_PROVIDERS_PROGRAM);
             const {program, host: compilerHost} =
                 makeTestBundleProgram(getRootFiles(MODULE_WITH_PROVIDERS_PROGRAM)[0]);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const file = getSourceFileOrError(program, _('/src/functions.js'));
             const fns = host.getModuleWithProvidersFunctions(file);
             expect(fns.map(fn => [fn.declaration.name !.getText(), fn.ngModule.node.name.text]))
                 .toEqual([
                   ['ngModuleIdentifier', 'InternalModule'],
                   ['ngModuleWithEmptyProviders', 'InternalModule'],
                   ['ngModuleWithProviders', 'InternalModule'],
                   ['externalNgModule', 'ExternalModule'],
                 ]);
           });

        it('should find every static method on exported classes that return an object that looks like a ModuleWithProviders object',
           () => {
             loadTestFiles(MODULE_WITH_PROVIDERS_PROGRAM);
             const {program, host: compilerHost} =
                 makeTestBundleProgram(getRootFiles(MODULE_WITH_PROVIDERS_PROGRAM)[0]);
             const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
             const file = getSourceFileOrError(program, _('/src/methods.js'));
             const fn = host.getModuleWithProvidersFunctions(file);
             expect(fn.map(fn => [fn.declaration.getText(), fn.ngModule.node.name.text])).toEqual([
               [
                 'function() { return { ngModule: InternalModule }; }',
                 'InternalModule',
               ],
               [
                 'function() { return { ngModule: InternalModule, providers: [] }; }',
                 'InternalModule',
               ],
               [
                 'function() { return { ngModule: InternalModule, providers: [SomeService] }; }',
                 'InternalModule',
               ],
               [
                 'function() { return { ngModule: module.ExternalModule }; }',
                 'ExternalModule',
               ],
             ]);
           });

        // https://github.com/angular/angular/issues/29078
        it('should resolve aliased module references to their original declaration', () => {
          loadTestFiles(MODULE_WITH_PROVIDERS_PROGRAM);
          const {program, host: compilerHost} =
              makeTestBundleProgram(getRootFiles(MODULE_WITH_PROVIDERS_PROGRAM)[0]);
          const host = new UmdReflectionHost(new MockLogger(), false, program, compilerHost);
          const file = getSourceFileOrError(program, _('/src/aliased_class.js'));
          const fn = host.getModuleWithProvidersFunctions(file);
          expect(fn.map(fn => [fn.declaration.getText(), fn.ngModule.node.name.text])).toEqual([
            ['function() { return { ngModule: AliasedModule_1 }; }', 'AliasedModule'],
          ]);
        });
      });
    });
  });
});