angular-docs-cn/modules/angular2/test/compiler/static_reflector_spec.ts

import {
  ddescribe,
  describe,
  xdescribe,
  it,
  iit,
  xit,
  expect,
  beforeEach,
  afterEach,
  AsyncTestCompleter,
  inject,
  beforeEachProviders
} from 'angular2/testing_internal';

import {StaticReflector, StaticReflectorHost} from 'angular2/src/compiler/static_reflector';

export function main() {
  describe('StaticRefelector', () => {
    it('should get annotations for NgFor', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let NgFor = reflector.getStaticType('angular2/src/common/directives/ng_for', 'NgFor');
      let annotations = reflector.annotations(NgFor);
      expect(annotations.length).toEqual(1);
      let annotation = annotations[0];
      expect(annotation.selector).toEqual('[ngFor][ngForOf]');
      expect(annotation.inputs).toEqual(['ngForTrackBy', 'ngForOf', 'ngForTemplate']);
    });

    it('should get constructor for NgFor', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let NgFor = reflector.getStaticType('angular2/src/common/directives/ng_for', 'NgFor');
      let ViewContainerRef = reflector.getStaticType('angular2/src/core/linker/view_container_ref',
                                                     'ViewContainerRef');
      let TemplateRef =
          reflector.getStaticType('angular2/src/core/linker/template_ref', 'TemplateRef');
      let IterableDiffers = reflector.getStaticType(
          'angular2/src/core/change_detection/differs/iterable_differs', 'IterableDiffers');
      let ChangeDetectorRef = reflector.getStaticType(
          'angular2/src/core/change_detection/change_detector_ref', 'ChangeDetectorRef');

      let parameters = reflector.parameters(NgFor);
      expect(parameters)
          .toEqual([ViewContainerRef, TemplateRef, IterableDiffers, ChangeDetectorRef]);
    });

    it('should get annotations for HeroDetailComponent', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let HeroDetailComponent =
          reflector.getStaticType('./app/hero-detail.component', 'HeroDetailComponent');
      let annotations = reflector.annotations(HeroDetailComponent);
      expect(annotations.length).toEqual(1);
      let annotation = annotations[0];
      expect(annotation.selector).toEqual('my-hero-detail');
    });

    it('should get and empty annotation list for an unknown class', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let UnknownClass = reflector.getStaticType('./app/app.component', 'UnknownClass');
      let annotations = reflector.annotations(UnknownClass);
      expect(annotations).toEqual([]);
    });

    it('should get propMetadata for HeroDetailComponent', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let HeroDetailComponent =
          reflector.getStaticType('./app/hero-detail.component', 'HeroDetailComponent');
      let props = reflector.propMetadata(HeroDetailComponent);
      expect(props['hero']).toBeTruthy();
    });

    it('should get an empty object from propMetadata for an unknown class', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let UnknownClass = reflector.getStaticType('./app/app.component', 'UnknownClass');
      let properties = reflector.propMetadata(UnknownClass);
      expect(properties).toEqual({});
    });

    it('should get empty parameters list for an unknown class ', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      let UnknownClass = reflector.getStaticType('./app/app.component', 'UnknownClass');
      let parameters = reflector.parameters(UnknownClass);
      expect(parameters).toEqual([]);
    });

    it('should simplify primitive into itself', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', 1)).toBe(1);
      expect(reflector.simplify('', true)).toBe(true);
      expect(reflector.simplify('', "some value")).toBe("some value");
    });

    it('should simplify an array into a copy of the array', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', [1, 2, 3])).toEqual([1, 2, 3]);
    });

    it('should simplify an object to a copy of the object', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);
      let expr = {a: 1, b: 2, c: 3};
      expect(reflector.simplify('', expr)).toEqual(expr);
    });

    it('should simplify &&', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '&&', left: true, right: true}))).toBe(true);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '&&', left: true, right: false}))).toBe(false);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '&&', left: false, right: true}))).toBe(false);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '&&', left: false, right: false}))).toBe(false);
    });

    it('should simplify ||', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '||', left: true, right: true}))).toBe(true);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '||', left: true, right: false}))).toBe(true);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '||', left: false, right: true}))).toBe(true);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '||', left: false, right: false}))).toBe(false);
    });

    it('should simplify &', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '&', left: 0x22, right: 0x0F}))).toBe(0x22 & 0x0F);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '&', left: 0x22, right: 0xF0}))).toBe(0x22 & 0xF0);
    });

    it('should simplify |', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '|', left: 0x22, right: 0x0F}))).toBe(0x22 | 0x0F);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '|', left: 0x22, right: 0xF0}))).toBe(0x22 | 0xF0);
    });

    it('should simplify ^', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '|', left: 0x22, right: 0x0F}))).toBe(0x22 | 0x0F);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '|', left: 0x22, right: 0xF0}))).toBe(0x22 | 0xF0);
    });

    it('should simplify ==', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '==', left: 0x22, right: 0x22}))).toBe(0x22 == 0x22);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '==', left: 0x22, right: 0xF0}))).toBe(0x22 == 0xF0);
    });

    it('should simplify !=', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '!=', left: 0x22, right: 0x22}))).toBe(0x22 != 0x22);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '!=', left: 0x22, right: 0xF0}))).toBe(0x22 != 0xF0);
    });

    it('should simplify ===', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '===', left: 0x22, right: 0x22}))).toBe(0x22 === 0x22);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '===', left: 0x22, right: 0xF0}))).toBe(0x22 === 0xF0);
    });

    it('should simplify !==', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '!==', left: 0x22, right: 0x22}))).toBe(0x22 !== 0x22);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '!==', left: 0x22, right: 0xF0}))).toBe(0x22 !== 0xF0);
    });

    it('should simplify >', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>', left: 1, right: 1}))).toBe(1 > 1);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>', left: 1, right: 0}))).toBe(1 > 0);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>', left: 0, right: 1}))).toBe(0 > 1);
    });

    it('should simplify >=', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>=', left: 1, right: 1}))).toBe(1 >= 1);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>=', left: 1, right: 0}))).toBe(1 >= 0);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>=', left: 0, right: 1}))).toBe(0 >= 1);
    });

    it('should simplify <=', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<=', left: 1, right: 1}))).toBe(1 <= 1);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<=', left: 1, right: 0}))).toBe(1 <= 0);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<=', left: 0, right: 1}))).toBe(0 <= 1);
    });

    it('should simplify <', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<', left: 1, right: 1}))).toBe(1 < 1);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<', left: 1, right: 0}))).toBe(1 < 0);
      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<', left: 0, right: 1}))).toBe(0 < 1);
    });

    it('should simplify <<', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '<<', left: 0x55, right: 2}))).toBe(0x55 << 2);
    });

    it('should simplify >>', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '>>', left: 0x55, right: 2}))).toBe(0x55 >> 2);
    });

    it('should simplify +', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '+', left: 0x55, right: 2}))).toBe(0x55 + 2);
    });

    it('should simplify -', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '-', left: 0x55, right: 2}))).toBe(0x55 - 2);
    });

    it('should simplify *', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '*', left: 0x55, right: 2}))).toBe(0x55 * 2);
    });

    it('should simplify /', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '/', left: 0x55, right: 2}))).toBe(0x55 / 2);
    });

    it('should simplify %', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'binop', operator: '%', left: 0x55, right: 2}))).toBe(0x55 % 2);
    });

    it('should simplify prefix -', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'pre', operator: '-', operand: 2}))).toBe(-2);
    });

    it('should simplify prefix ~', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'pre', operator: '~', operand: 2}))).toBe(~2);
    });

    it('should simplify prefix !', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({ __symbolic: 'pre', operator: '!', operand: true}))).toBe(!true);
      expect(reflector.simplify('', ({ __symbolic: 'pre', operator: '!', operand: false}))).toBe(!false);
    });

    it('should simpify an array index', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(reflector.simplify('', ({__symbolic: "index", expression: [1, 2, 3], index: 2})))
          .toBe(3);
    });

    it('should simplify an object index', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);
      let expr = {__symbolic: "select", expression: {a: 1, b: 2, c: 3}, member: "b"};
      expect(reflector.simplify('', expr)).toBe(2);
    });

    it('should simplify a module reference', () => {
      let host = new MockReflectorHost();
      let reflector = new StaticReflector(host);

      expect(
          reflector.simplify('./cases', ({__symbolic: "reference", module: "./extern", name: "s"})))
          .toEqual("s");
    });
  });
}

class MockReflectorHost implements StaticReflectorHost {
  getMetadataFor(moduleId: string): any {
    return {
      'angular2/src/common/directives/ng_for':
          {
            "__symbolic": "module",
            "module": "./ng_for",
            "metadata":
                {
                  "NgFor":
                      {
                        "__symbolic": "class",
                        "decorators":
                            [
                              {
                                "__symbolic": "call",
                                "expression": {
                                  "__symbolic": "reference",
                                  "name": "Directive",
                                  "module": "../../core/metadata"
                                },
                                "arguments":
                                    [
                                      {
                                        "selector": "[ngFor][ngForOf]",
                                        "inputs": ["ngForTrackBy", "ngForOf", "ngForTemplate"]
                                      }
                                    ]
                              }
                            ],
                        "members":
                            {
                              "__ctor__": [
                                {
                                  "__symbolic": "constructor",
                                  "parameters":
                                      [
                                        {
                                          "__symbolic": "reference",
                                          "module": "../../core/linker/view_container_ref",
                                          "name": "ViewContainerRef"
                                        },
                                        {
                                          "__symbolic": "reference",
                                          "module": "../../core/linker/template_ref",
                                          "name": "TemplateRef"
                                        },
                                        {
                                          "__symbolic": "reference",
                                          "module":
                                              "../../core/change_detection/differs/iterable_differs",
                                          "name": "IterableDiffers"
                                        },
                                        {
                                          "__symbolic": "reference",
                                          "module":
                                              "../../core/change_detection/change_detector_ref",
                                          "name": "ChangeDetectorRef"
                                        }
                                      ]
                                }
                              ]
                            }
                      }
                }
          },
          'angular2/src/core/linker/view_container_ref':
              {
                "module": "./view_container_ref",
                "metadata": {"ViewContainerRef": {"__symbolic": "class"}}
              },
          'angular2/src/core/linker/template_ref':
              {"module": "./template_ref", "metadata": {"TemplateRef": {"__symbolic": "class"}}},
          'angular2/src/core/change_detection/differs/iterable_differs':
              {
                "module": "./iterable_differs",
                "metadata": {"IterableDiffers": {"__symbolic": "class"}}
              },
          'angular2/src/core/change_detection/change_detector_ref':
              {
                "module": "./change_detector_ref",
                "metadata": {"ChangeDetectorRef": {"__symbolic": "class"}}
              },
          './app/hero-detail.component':
              {
                "__symbolic": "module",
                "module": "./hero-detail.component",
                "metadata":
                    {
                      "HeroDetailComponent":
                          {
                            "__symbolic": "class",
                            "decorators":
                                [
                                  {
                                    "__symbolic": "call",
                                    "expression": {
                                      "__symbolic": "reference",
                                      "name": "Component",
                                      "module": "angular2/src/core/metadata"
                                    },
                                    "arguments": [
                                      {
                                        "selector": "my-hero-detail",
                                        "template": "\n  <div *ngIf=\"hero\">\n    <h2>{{hero.name}} details!</h2>\n    <div><label>id: </label>{{hero.id}}</div>\n    <div>\n      <label>name: </label>\n      <input [(ngModel)]=\"hero.name\" placeholder=\"name\"/>\n    </div>\n  </div>\n"
                                      }
                                    ]
                                  }
                                ],
                            "members":
                                {
                                  "hero": [
                                    {
                                      "__symbolic": "property",
                                      "decorators":
                                          [
                                            {
                                              "__symbolic": "call",
                                              "expression":
                                                  {
                                                    "__symbolic": "reference",
                                                    "name": "Input",
                                                    "module": "angular2/src/core/metadata"
                                                  }
                                            }
                                          ]
                                    }
                                  ]
                                }
                          }
                    }
              },
          './extern': {
        "__symbolic": "module", module: './extern', metadata: { s: "s" }
      }
    }
    [moduleId];
  }
}