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Angular 2 - a web framework for modern web apps

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import { Injector, PLATFORM_INITIALIZER } from 'angular2/core'; import { BaseException } from 'angular2/src/facade/exceptions'; import { ListWrapper } from 'angular2/src/facade/collection'; import { FunctionWrapper, isPresent } from 'angular2/src/facade/lang'; export class TestInjector { constructor() { this._instantiated = false; this._injector = null; this._providers = []; this.platformProviders = []; this.applicationProviders = []; } reset() { this._injector = null; this._providers = []; this._instantiated = false; } addProviders(providers) { if (this._instantiated) { throw new BaseException('Cannot add providers after test injector is instantiated'); } this._providers = ListWrapper.concat(this._providers, providers); } createInjector() { var rootInjector = Injector.resolveAndCreate(this.platformProviders); this._injector = rootInjector.resolveAndCreateChild(ListWrapper.concat(this.applicationProviders, this._providers)); this._instantiated = true; return this._injector; } execute(fn) { var additionalProviders = fn.additionalProviders(); if (additionalProviders.length > 0) { this.addProviders(additionalProviders); } if (!this._instantiated) { this.createInjector(); } return fn.execute(this._injector); } } var _testInjector = null; export function getTestInjector() { if (_testInjector == null) { _testInjector = new TestInjector(); } return _testInjector; } /** * Set the providers that the test injector should use. These should be providers * common to every test in the suite. * * This may only be called once, to set up the common providers for the current test * suite on teh current platform. If you absolutely need to change the providers, * first use `resetBaseTestProviders`. * * Test Providers for individual platforms are available from * 'angular2/platform/testing/<platform_name>'. */ export function setBaseTestProviders(platformProviders, applicationProviders) { var testInjector = getTestInjector(); if (testInjector.platformProviders.length > 0 || testInjector.applicationProviders.length > 0) { throw new BaseException('Cannot set base providers because it has already been called'); } testInjector.platformProviders = platformProviders; testInjector.applicationProviders = applicationProviders; var injector = testInjector.createInjector(); let inits = injector.getOptional(PLATFORM_INITIALIZER); if (isPresent(inits)) { inits.forEach(init => init()); } testInjector.reset(); } /** * Reset the providers for the test injector. */ export function resetBaseTestProviders() { var testInjector = getTestInjector(); testInjector.platformProviders = []; testInjector.applicationProviders = []; testInjector.reset(); } /** * Allows injecting dependencies in `beforeEach()` and `it()`. * * Example: * * ``` * beforeEach(inject([Dependency, AClass], (dep, object) => { * // some code that uses `dep` and `object` * // ... * })); * * it('...', inject([AClass], (object) => { * object.doSomething(); * expect(...); * }) * ``` * * Notes: * - inject is currently a function because of some Traceur limitation the syntax should * eventually * becomes `it('...', @Inject (object: AClass, async: AsyncTestCompleter) => { ... });` * * @param {Array} tokens * @param {Function} fn * @return {FunctionWithParamTokens} */ export function inject(tokens, fn) { return new FunctionWithParamTokens(tokens, fn, false); } export class InjectSetupWrapper { constructor(_providers) { this._providers = _providers; } inject(tokens, fn) { return new FunctionWithParamTokens(tokens, fn, false, this._providers); } injectAsync(tokens, fn) { return new FunctionWithParamTokens(tokens, fn, true, this._providers); } } export function withProviders(providers) { return new InjectSetupWrapper(providers); } /** * Allows injecting dependencies in `beforeEach()` and `it()`. The test must return * a promise which will resolve when all asynchronous activity is complete. * * Example: * * ``` * it('...', injectAsync([AClass], (object) => { * return object.doSomething().then(() => { * expect(...); * }); * }) * ``` * * @param {Array} tokens * @param {Function} fn * @return {FunctionWithParamTokens} */ export function injectAsync(tokens, fn) { return new FunctionWithParamTokens(tokens, fn, true); } function emptyArray() { return []; } export class FunctionWithParamTokens { constructor(_tokens, _fn, isAsync, additionalProviders = emptyArray) { this._tokens = _tokens; this._fn = _fn; this.isAsync = isAsync; this.additionalProviders = additionalProviders; } /** * Returns the value of the executed function. */ execute(injector) { var params = this._tokens.map(t => injector.get(t)); return FunctionWrapper.apply(this._fn, params); } hasToken(token) { return this._tokens.indexOf(token) > -1; } } //# 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{Injector, Provider, PLATFORM_INITIALIZER} from 'angular2/core';\nimport {BaseException, ExceptionHandler} from 'angular2/src/facade/exceptions';\nimport {ListWrapper} from 'angular2/src/facade/collection';\nimport {FunctionWrapper, isPresent, Type} from 'angular2/src/facade/lang';\n\nexport class TestInjector {\n  private _instantiated: boolean = false;\n\n  private _injector: Injector = null;\n\n  private _providers: Array<Type | Provider | any[]> = [];\n\n  reset() {\n    this._injector = null;\n    this._providers = [];\n    this._instantiated = false;\n  }\n\n  platformProviders: Array<Type | Provider | any[]> = [];\n\n  applicationProviders: Array<Type | Provider | any[]> = [];\n\n  addProviders(providers: Array<Type | Provider | any[]>) {\n    if (this._instantiated) {\n      throw new BaseException('Cannot add providers after test injector is instantiated');\n    }\n    this._providers = ListWrapper.concat(this._providers, providers);\n  }\n\n  createInjector() {\n    var rootInjector = Injector.resolveAndCreate(this.platformProviders);\n    this._injector = rootInjector.resolveAndCreateChild(\n        ListWrapper.concat(this.applicationProviders, this._providers));\n    this._instantiated = true;\n    return this._injector;\n  }\n\n  execute(fn: FunctionWithParamTokens): any {\n    var additionalProviders = fn.additionalProviders();\n    if (additionalProviders.length > 0) {\n      this.addProviders(additionalProviders);\n    }\n    if (!this._instantiated) {\n      this.createInjector();\n    }\n    return fn.execute(this._injector);\n  }\n}\n\nvar _testInjector: TestInjector = null;\n\nexport function getTestInjector() {\n  if (_testInjector == null) {\n    _testInjector = new TestInjector();\n  }\n  return _testInjector;\n}\n\n/**\n * Set the providers that the test injector should use. These should be providers\n * common to every test in the suite.\n *\n * This may only be called once, to set up the common providers for the current test\n * suite on teh current platform. If you absolutely need to change the providers,\n * first use `resetBaseTestProviders`.\n *\n * Test Providers for individual platforms are available from\n * 'angular2/platform/testing/<platform_name>'.\n */\nexport function setBaseTestProviders(platformProviders: Array<Type | Provider | any[]>,\n                                     applicationProviders: Array<Type | Provider | any[]>) {\n  var testInjector = getTestInjector();\n  if (testInjector.platformProviders.length > 0 || testInjector.applicationProviders.length > 0) {\n    throw new BaseException('Cannot set base providers because it has already been called');\n  }\n  testInjector.platformProviders = platformProviders;\n  testInjector.applicationProviders = applicationProviders;\n  var injector = testInjector.createInjector();\n  let inits: Function[] = injector.getOptional(PLATFORM_INITIALIZER);\n  if (isPresent(inits)) {\n    inits.forEach(init => init());\n  }\n  testInjector.reset();\n}\n\n/**\n * Reset the providers for the test injector.\n */\nexport function resetBaseTestProviders() {\n  var testInjector = getTestInjector();\n  testInjector.platformProviders = [];\n  testInjector.applicationProviders = [];\n  testInjector.reset();\n}\n\n/**\n * Allows injecting dependencies in `beforeEach()` and `it()`.\n *\n * Example:\n *\n * ```\n * beforeEach(inject([Dependency, AClass], (dep, object) => {\n *   // some code that uses `dep` and `object`\n *   // ...\n * }));\n *\n * it('...', inject([AClass], (object) => {\n *   object.doSomething();\n *   expect(...);\n * })\n * ```\n *\n * Notes:\n * - inject is currently a function because of some Traceur limitation the syntax should\n * eventually\n *   becomes `it('...', @Inject (object: AClass, async: AsyncTestCompleter) => { ... });`\n *\n * @param {Array} tokens\n * @param {Function} fn\n * @return {FunctionWithParamTokens}\n */\nexport function inject(tokens: any[], fn: Function): FunctionWithParamTokens {\n  return new FunctionWithParamTokens(tokens, fn, false);\n}\n\nexport class InjectSetupWrapper {\n  constructor(private _providers: () => any) {}\n\n  inject(tokens: any[], fn: Function): FunctionWithParamTokens {\n    return new FunctionWithParamTokens(tokens, fn, false, this._providers);\n  }\n\n  injectAsync(tokens: any[], fn: Function): FunctionWithParamTokens {\n    return new FunctionWithParamTokens(tokens, fn, true, this._providers);\n  }\n}\n\nexport function withProviders(providers: () => any) {\n  return new InjectSetupWrapper(providers);\n}\n\n/**\n * Allows injecting dependencies in `beforeEach()` and `it()`. The test must return\n * a promise which will resolve when all asynchronous activity is complete.\n *\n * Example:\n *\n * ```\n * it('...', injectAsync([AClass], (object) => {\n *   return object.doSomething().then(() => {\n *     expect(...);\n *   });\n * })\n * ```\n *\n * @param {Array} tokens\n * @param {Function} fn\n * @return {FunctionWithParamTokens}\n */\nexport function injectAsync(tokens: any[], fn: Function): FunctionWithParamTokens {\n  return new FunctionWithParamTokens(tokens, fn, true);\n}\n\nfunction emptyArray(): Array<any> {\n  return [];\n}\n\nexport class FunctionWithParamTokens {\n  constructor(private _tokens: any[], private _fn: Function, public isAsync: boolean,\n              public additionalProviders: () => any = emptyArray) {}\n\n  /**\n   * Returns the value of the executed function.\n   */\n  execute(injector: Injector): any {\n    var params = this._tokens.map(t => injector.get(t));\n    return FunctionWrapper.apply(this._fn, params);\n  }\n\n  hasToken(token: any): boolean { return this._tokens.indexOf(token) > -1; }\n}\n"]}