/**
 * @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 {ExternalReference} from '@angular/compiler';
import {Identifiers} from '@angular/compiler/src/render3/r3_identifiers';

import {angularCoreEnv} from '../../src/render3/jit/environment';

const INTERFACE_EXCEPTIONS = new Set<string>([
  'ɵBaseDef',
  'ɵComponentDefWithMeta',
  'ɵDirectiveDefWithMeta',
  'ɵInjectorDef',
  'ɵNgModuleDefWithMeta',
  'ɵPipeDefWithMeta',
]);

describe('r3 jit environment', () => {
  // This test keeps render3/jit/environment and r3_identifiers in the compiler in sync, ensuring
  // that if the compiler writes a reference to a render3 symbol, it will be resolvable at runtime
  // in JIT mode.
  it('should support all r3 symbols', () => {
    Object
        // Map over the static properties of Identifiers.
        .keys(Identifiers)
        .map(key => (Identifiers as any as{[key: string]: string | ExternalReference})[key])
        // A few such properties are string constants. Ignore them, and focus on ExternalReferences.
        .filter(isExternalReference)
        // Some references are to interface types. Only take properties which have runtime values.
        .filter(sym => !INTERFACE_EXCEPTIONS.has(sym.name))
        .forEach(sym => {
          // Assert that angularCoreEnv has a reference to the runtime symbol.
          expect(angularCoreEnv.hasOwnProperty(sym.name))
              .toBe(true, `Missing symbol ${sym.name} in render3/jit/environment`);
        });
  });
});

function isExternalReference(sym: ExternalReference | string): sym is ExternalReference&
    {name: string} {
  return typeof sym === 'object' && sym.name !== null && sym.moduleName !== null;
}
