559 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			559 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
| /**
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|  * @license
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|  * Copyright Google Inc. All Rights Reserved.
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|  *
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|  * Use of this source code is governed by an MIT-style license that can be
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|  * found in the LICENSE file at https://angular.io/license
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|  */
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| 
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| import {AfterContentChecked, AfterContentInit, AfterViewChecked, AfterViewInit, ChangeDetectorRef, DoCheck, ElementRef, EventEmitter, Injector, OnChanges, OnDestroy, OnInit, RenderComponentType, Renderer, Renderer2, RootRenderer, Sanitizer, SecurityContext, SimpleChange, TemplateRef, ViewContainerRef, ViewEncapsulation, WrappedValue, getDebugNode} from '@angular/core';
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| import {getDebugContext} from '@angular/core/src/errors';
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| import {ArgumentType, BindingFlags, DebugContext, DepFlags, NodeDef, NodeFlags, RootData, Services, ViewData, ViewDefinition, ViewDefinitionFactory, ViewFlags, ViewHandleEventFn, ViewUpdateFn, anchorDef, asElementData, asProviderData, directiveDef, elementDef, providerDef, rootRenderNodes, textDef, viewDef} from '@angular/core/src/view/index';
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| import {TestBed, inject, withModule} from '@angular/core/testing';
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| import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
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| 
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| import {ARG_TYPE_VALUES, checkNodeInlineOrDynamic, createRootView, isBrowser} from './helper';
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| 
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| export function main() {
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|   describe(`View Providers`, () => {
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|     function compViewDef(
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|         nodes: NodeDef[], updateDirectives?: ViewUpdateFn, updateRenderer?: ViewUpdateFn,
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|         viewFlags: ViewFlags = ViewFlags.None): ViewDefinition {
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|       return viewDef(viewFlags, nodes, updateDirectives, updateRenderer);
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|     }
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| 
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|     function embeddedViewDef(nodes: NodeDef[], update?: ViewUpdateFn): ViewDefinitionFactory {
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|       return () => viewDef(ViewFlags.None, nodes, update);
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|     }
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| 
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|     function createAndGetRootNodes(viewDef: ViewDefinition): {rootNodes: any[], view: ViewData} {
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|       const view = createRootView(viewDef, {});
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|       const rootNodes = rootRenderNodes(view);
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|       return {rootNodes, view};
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|     }
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| 
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|     describe('create', () => {
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|       let instance: SomeService;
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| 
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|       class SomeService {
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|         constructor(public dep: any) { instance = this; }
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|       }
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| 
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|       beforeEach(() => { instance = null !; });
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| 
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|       it('should create providers eagerly', () => {
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|         createAndGetRootNodes(compViewDef([
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|           elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|           directiveDef(NodeFlags.None, null !, 0, SomeService, [])
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|         ]));
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| 
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|         expect(instance instanceof SomeService).toBe(true);
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|       });
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| 
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|       it('should create providers lazily', () => {
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|         let lazy: LazyService = undefined !;
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|         class LazyService {
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|           constructor() { lazy = this; }
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|         }
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| 
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|         createAndGetRootNodes(compViewDef([
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|           elementDef(NodeFlags.None, null !, null !, 2, 'span'),
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|           providerDef(
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|               NodeFlags.TypeClassProvider | NodeFlags.LazyProvider, null !, LazyService,
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|               LazyService, []),
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|           directiveDef(NodeFlags.None, null !, 0, SomeService, [Injector])
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|         ]));
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| 
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|         expect(lazy).toBeUndefined();
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|         instance.dep.get(LazyService);
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|         expect(lazy instanceof LazyService).toBe(true);
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|       });
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| 
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|       it('should create value providers', () => {
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|         createAndGetRootNodes(compViewDef([
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|           elementDef(NodeFlags.None, null !, null !, 2, 'span'),
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|           providerDef(NodeFlags.TypeValueProvider, null !, 'someToken', 'someValue', []),
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|           directiveDef(NodeFlags.None, null !, 0, SomeService, ['someToken']),
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|         ]));
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| 
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|         expect(instance.dep).toBe('someValue');
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|       });
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| 
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|       it('should create factory providers', () => {
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|         function someFactory() { return 'someValue'; }
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| 
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|         createAndGetRootNodes(compViewDef([
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|           elementDef(NodeFlags.None, null !, null !, 2, 'span'),
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|           providerDef(NodeFlags.TypeFactoryProvider, null !, 'someToken', someFactory, []),
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|           directiveDef(NodeFlags.None, null !, 0, SomeService, ['someToken']),
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|         ]));
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| 
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|         expect(instance.dep).toBe('someValue');
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|       });
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| 
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|       it('should create useExisting providers', () => {
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|         createAndGetRootNodes(compViewDef([
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|           elementDef(NodeFlags.None, null !, null !, 3, 'span'),
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|           providerDef(NodeFlags.TypeValueProvider, null !, 'someExistingToken', 'someValue', []),
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|           providerDef(
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|               NodeFlags.TypeUseExistingProvider, null !, 'someToken', null !,
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|               ['someExistingToken']),
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|           directiveDef(NodeFlags.None, null !, 0, SomeService, ['someToken']),
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|         ]));
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| 
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|         expect(instance.dep).toBe('someValue');
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|       });
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| 
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|       it('should add a DebugContext to errors in provider factories', () => {
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|         class SomeService {
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|           constructor() { throw new Error('Test'); }
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|         }
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| 
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|         let err: any;
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|         try {
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|           createRootView(
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|               compViewDef([
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|                 elementDef(
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|                     NodeFlags.None, null !, null !, 1, 'div', null !, null !, null !, null !,
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|                     () => compViewDef([textDef(null !, ['a'])])),
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|                 directiveDef(NodeFlags.Component, null !, 0, SomeService, [])
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|               ]),
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|               TestBed.get(Injector), [], getDOM().createElement('div'));
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|         } catch (e) {
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|           err = e;
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|         }
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|         expect(err).toBeTruthy();
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|         expect(err.message).toBe('Test');
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|         const debugCtx = getDebugContext(err);
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|         expect(debugCtx.view).toBeTruthy();
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|         expect(debugCtx.nodeIndex).toBe(1);
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|       });
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| 
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|       describe('deps', () => {
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|         class Dep {}
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| 
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|         it('should inject deps from the same element', () => {
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|           createAndGetRootNodes(compViewDef([
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|             elementDef(NodeFlags.None, null !, null !, 2, 'span'),
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|             directiveDef(NodeFlags.None, null !, 0, Dep, []),
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|             directiveDef(NodeFlags.None, null !, 0, SomeService, [Dep])
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|           ]));
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| 
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|           expect(instance.dep instanceof Dep).toBeTruthy();
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|         });
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| 
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|         it('should inject deps from a parent element', () => {
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|           createAndGetRootNodes(compViewDef([
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|             elementDef(NodeFlags.None, null !, null !, 3, 'span'),
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|             directiveDef(NodeFlags.None, null !, 0, Dep, []),
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|             elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|             directiveDef(NodeFlags.None, null !, 0, SomeService, [Dep])
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|           ]));
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| 
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|           expect(instance.dep instanceof Dep).toBeTruthy();
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|         });
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| 
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|         it('should not inject deps from sibling root elements', () => {
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|           const nodes = [
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|             elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|             directiveDef(NodeFlags.None, null !, 0, Dep, []),
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|             elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|             directiveDef(NodeFlags.None, null !, 0, SomeService, [Dep])
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|           ];
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| 
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|           // root elements
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|           expect(() => createAndGetRootNodes(compViewDef(nodes)))
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|               .toThrowError('No provider for Dep!');
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| 
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|           // non root elements
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|           expect(
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|               () => createAndGetRootNodes(compViewDef(
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|                   [elementDef(NodeFlags.None, null !, null !, 4, 'span')].concat(nodes))))
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|               .toThrowError('No provider for Dep!');
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|         });
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| 
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|         it('should inject from a parent elment in a parent view', () => {
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|           createAndGetRootNodes(compViewDef([
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|             elementDef(
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|                 NodeFlags.None, null !, null !, 1, 'div', null !, null !, null !, null !,
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|                 () => compViewDef([
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|                   elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|                   directiveDef(NodeFlags.None, null !, 0, SomeService, [Dep])
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|                 ])),
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|             directiveDef(NodeFlags.Component, null !, 0, Dep, []),
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|           ]));
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| 
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|           expect(instance.dep instanceof Dep).toBeTruthy();
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|         });
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| 
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|         it('should throw for missing dependencies', () => {
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|           expect(() => createAndGetRootNodes(compViewDef([
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|                    elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|                    directiveDef(NodeFlags.None, null !, 0, SomeService, ['nonExistingDep'])
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|                  ])))
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|               .toThrowError('No provider for nonExistingDep!');
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|         });
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| 
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|         it('should use null for optional missing dependencies', () => {
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|           createAndGetRootNodes(compViewDef([
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|             elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|             directiveDef(
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|                 NodeFlags.None, null !, 0, SomeService, [[DepFlags.Optional, 'nonExistingDep']])
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|           ]));
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|           expect(instance.dep).toBe(null);
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|         });
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| 
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|         it('should skip the current element when using SkipSelf', () => {
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|           createAndGetRootNodes(compViewDef([
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|             elementDef(NodeFlags.None, null !, null !, 4, 'span'),
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|             providerDef(NodeFlags.TypeValueProvider, null !, 'someToken', 'someParentValue', []),
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|             elementDef(NodeFlags.None, null !, null !, 2, 'span'),
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|             providerDef(NodeFlags.TypeValueProvider, null !, 'someToken', 'someValue', []),
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|             directiveDef(
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|                 NodeFlags.None, null !, 0, SomeService, [[DepFlags.SkipSelf, 'someToken']])
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|           ]));
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|           expect(instance.dep).toBe('someParentValue');
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|         });
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| 
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|         it('should ask the root injector',
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|            withModule({providers: [{provide: 'rootDep', useValue: 'rootValue'}]}, () => {
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|              createAndGetRootNodes(compViewDef([
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|                elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|                directiveDef(NodeFlags.None, null !, 0, SomeService, ['rootDep'])
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|              ]));
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| 
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|              expect(instance.dep).toBe('rootValue');
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|            }));
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| 
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|         describe('builtin tokens', () => {
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|           it('should inject ViewContainerRef', () => {
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|             createAndGetRootNodes(compViewDef([
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|               anchorDef(NodeFlags.EmbeddedViews, null !, null !, 1),
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|               directiveDef(NodeFlags.None, null !, 0, SomeService, [ViewContainerRef])
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|             ]));
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| 
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|             expect(instance.dep.createEmbeddedView).toBeTruthy();
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|           });
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| 
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|           it('should inject TemplateRef', () => {
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|             createAndGetRootNodes(compViewDef([
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|               anchorDef(
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|                   NodeFlags.None, null !, null !, 1, null !,
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|                   embeddedViewDef([anchorDef(NodeFlags.None, null !, null !, 0)])),
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|               directiveDef(NodeFlags.None, null !, 0, SomeService, [TemplateRef])
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|             ]));
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| 
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|             expect(instance.dep.createEmbeddedView).toBeTruthy();
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|           });
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| 
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|           it('should inject ElementRef', () => {
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|             const {view} = createAndGetRootNodes(compViewDef([
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|               elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|               directiveDef(NodeFlags.None, null !, 0, SomeService, [ElementRef])
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|             ]));
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| 
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|             expect(instance.dep.nativeElement).toBe(asElementData(view, 0).renderElement);
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|           });
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| 
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|           it('should inject Injector', () => {
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|             const {view} = createAndGetRootNodes(compViewDef([
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|               elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|               directiveDef(NodeFlags.None, null !, 0, SomeService, [Injector])
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|             ]));
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| 
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|             expect(instance.dep.get(SomeService)).toBe(instance);
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|           });
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| 
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|           it('should inject ChangeDetectorRef for non component providers', () => {
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|             const {view} = createAndGetRootNodes(compViewDef([
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|               elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|               directiveDef(NodeFlags.None, null !, 0, SomeService, [ChangeDetectorRef])
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|             ]));
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| 
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|             expect(instance.dep._view).toBe(view);
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|           });
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| 
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|           it('should inject ChangeDetectorRef for component providers', () => {
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|             const {view, rootNodes} = createAndGetRootNodes(compViewDef([
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|               elementDef(
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|                   NodeFlags.None, null !, null !, 1, 'div', null !, null !, null !, null !,
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|                   () => compViewDef([
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|                     elementDef(NodeFlags.None, null !, null !, 0, 'span'),
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|                   ])),
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|               directiveDef(NodeFlags.Component, null !, 0, SomeService, [ChangeDetectorRef]),
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|             ]));
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| 
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|             const compView = asElementData(view, 0).componentView;
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|             expect(instance.dep._view).toBe(compView);
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|           });
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| 
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|           it('should inject RendererV1', () => {
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|             createAndGetRootNodes(compViewDef([
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|               elementDef(
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|                   NodeFlags.None, null !, null !, 1, 'span', null !, null !, null !, null !,
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|                   () => compViewDef([anchorDef(NodeFlags.None, null !, null !, 0)])),
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|               directiveDef(NodeFlags.Component, null !, 0, SomeService, [Renderer])
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|             ]));
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| 
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|             expect(instance.dep.createElement).toBeTruthy();
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|           });
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| 
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|           it('should inject Renderer2', () => {
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|             createAndGetRootNodes(compViewDef([
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|               elementDef(
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|                   NodeFlags.None, null !, null !, 1, 'span', null !, null !, null !, null !,
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|                   () => compViewDef([anchorDef(NodeFlags.None, null !, null !, 0)])),
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|               directiveDef(NodeFlags.Component, null !, 0, SomeService, [Renderer2])
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|             ]));
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| 
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|             expect(instance.dep.createElement).toBeTruthy();
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|           });
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| 
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|         });
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| 
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|       });
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|     });
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| 
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|     describe('data binding', () => {
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| 
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|       ARG_TYPE_VALUES.forEach((inlineDynamic) => {
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|         it(`should update via strategy ${inlineDynamic}`, () => {
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|           let instance: SomeService = undefined !;
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| 
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|           class SomeService {
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|             a: any;
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|             b: any;
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|             constructor() { instance = this; }
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|           }
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| 
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|           const {view, rootNodes} = createAndGetRootNodes(compViewDef(
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|               [
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|                 elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|                 directiveDef(
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|                     NodeFlags.None, null !, 0, SomeService, [], {a: [0, 'a'], b: [1, 'b']})
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|               ],
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|               (check, view) => {
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|                 checkNodeInlineOrDynamic(check, view, 1, inlineDynamic, ['v1', 'v2']);
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|               }));
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| 
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|           Services.checkAndUpdateView(view);
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| 
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|           expect(instance.a).toBe('v1');
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|           expect(instance.b).toBe('v2');
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| 
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|           const el = rootNodes[0];
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|           expect(getDOM().getAttribute(el, 'ng-reflect-a')).toBe('v1');
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|         });
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| 
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|       });
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|     });
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| 
 | |
|     describe('outputs', () => {
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|       it('should listen to provider events', () => {
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|         let emitter = new EventEmitter<any>();
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|         let unsubscribeSpy: any;
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| 
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|         class SomeService {
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|           emitter = {
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|             subscribe: (callback: any) => {
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|               const subscription = emitter.subscribe(callback);
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|               unsubscribeSpy = spyOn(subscription, 'unsubscribe').and.callThrough();
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|               return subscription;
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|             }
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|           };
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|         }
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| 
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|         const handleEvent = jasmine.createSpy('handleEvent');
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|         const subscribe = spyOn(emitter, 'subscribe').and.callThrough();
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| 
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|         const {view, rootNodes} = createAndGetRootNodes(compViewDef([
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|           elementDef(
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|               NodeFlags.None, null !, null !, 1, 'span', null !, null !, null !, handleEvent),
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|           directiveDef(
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|               NodeFlags.None, null !, 0, SomeService, [], null !, {emitter: 'someEventName'})
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|         ]));
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| 
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|         emitter.emit('someEventInstance');
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|         expect(handleEvent).toHaveBeenCalledWith(view, 'someEventName', 'someEventInstance');
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| 
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|         Services.destroyView(view);
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|         expect(unsubscribeSpy).toHaveBeenCalled();
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|       });
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| 
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|       it('should report debug info on event errors', () => {
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|         let emitter = new EventEmitter<any>();
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| 
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|         class SomeService {
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|           emitter = emitter;
 | |
|         }
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| 
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|         const {view, rootNodes} = createAndGetRootNodes(compViewDef([
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|           elementDef(
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|               NodeFlags.None, null !, null !, 1, 'span', null !, null !, null !,
 | |
|               () => { throw new Error('Test'); }),
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|           directiveDef(
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|               NodeFlags.None, null !, 0, SomeService, [], null !, {emitter: 'someEventName'})
 | |
|         ]));
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| 
 | |
|         let err: any;
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|         try {
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|           emitter.emit('someEventInstance');
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|         } catch (e) {
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|           err = e;
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|         }
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|         expect(err).toBeTruthy();
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|         const debugCtx = getDebugContext(err);
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|         expect(debugCtx.view).toBe(view);
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|         // events are emitted with the index of the element, not the index of the provider.
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|         expect(debugCtx.nodeIndex).toBe(0);
 | |
|       });
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|     });
 | |
| 
 | |
|     describe('lifecycle hooks', () => {
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|       it('should call the lifecycle hooks in the right order', () => {
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|         let instanceCount = 0;
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|         let log: string[] = [];
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| 
 | |
|         class SomeService implements OnInit, DoCheck, OnChanges, AfterContentInit,
 | |
|             AfterContentChecked, AfterViewInit, AfterViewChecked, OnDestroy {
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|           id: number;
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|           a: any;
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|           ngOnInit() { log.push(`${this.id}_ngOnInit`); }
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|           ngDoCheck() { log.push(`${this.id}_ngDoCheck`); }
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|           ngOnChanges() { log.push(`${this.id}_ngOnChanges`); }
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|           ngAfterContentInit() { log.push(`${this.id}_ngAfterContentInit`); }
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|           ngAfterContentChecked() { log.push(`${this.id}_ngAfterContentChecked`); }
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|           ngAfterViewInit() { log.push(`${this.id}_ngAfterViewInit`); }
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|           ngAfterViewChecked() { log.push(`${this.id}_ngAfterViewChecked`); }
 | |
|           ngOnDestroy() { log.push(`${this.id}_ngOnDestroy`); }
 | |
|           constructor() { this.id = instanceCount++; }
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|         }
 | |
| 
 | |
|         const allFlags = NodeFlags.OnInit | NodeFlags.DoCheck | NodeFlags.OnChanges |
 | |
|             NodeFlags.AfterContentInit | NodeFlags.AfterContentChecked | NodeFlags.AfterViewInit |
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|             NodeFlags.AfterViewChecked | NodeFlags.OnDestroy;
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|         const {view, rootNodes} = createAndGetRootNodes(compViewDef(
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|             [
 | |
|               elementDef(NodeFlags.None, null !, null !, 3, 'span'),
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|               directiveDef(allFlags, null !, 0, SomeService, [], {a: [0, 'a']}),
 | |
|               elementDef(NodeFlags.None, null !, null !, 1, 'span'),
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|               directiveDef(allFlags, null !, 0, SomeService, [], {a: [0, 'a']})
 | |
|             ],
 | |
|             (check, view) => {
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|               check(view, 1, ArgumentType.Inline, 'someValue');
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|               check(view, 3, ArgumentType.Inline, 'someValue');
 | |
|             }));
 | |
| 
 | |
|         Services.checkAndUpdateView(view);
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| 
 | |
|         // Note: After... hooks are called bottom up.
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|         expect(log).toEqual([
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|           '0_ngOnChanges',
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|           '0_ngOnInit',
 | |
|           '0_ngDoCheck',
 | |
|           '1_ngOnChanges',
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|           '1_ngOnInit',
 | |
|           '1_ngDoCheck',
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|           '1_ngAfterContentInit',
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|           '1_ngAfterContentChecked',
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|           '0_ngAfterContentInit',
 | |
|           '0_ngAfterContentChecked',
 | |
|           '1_ngAfterViewInit',
 | |
|           '1_ngAfterViewChecked',
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|           '0_ngAfterViewInit',
 | |
|           '0_ngAfterViewChecked',
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|         ]);
 | |
| 
 | |
|         log = [];
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|         Services.checkAndUpdateView(view);
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| 
 | |
|         // Note: After... hooks are called bottom up.
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|         expect(log).toEqual([
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|           '0_ngDoCheck', '1_ngDoCheck', '1_ngAfterContentChecked', '0_ngAfterContentChecked',
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|           '1_ngAfterViewChecked', '0_ngAfterViewChecked'
 | |
|         ]);
 | |
| 
 | |
|         log = [];
 | |
|         Services.destroyView(view);
 | |
| 
 | |
|         // Note: ngOnDestroy ist called bottom up.
 | |
|         expect(log).toEqual(['1_ngOnDestroy', '0_ngOnDestroy']);
 | |
|       });
 | |
| 
 | |
|       it('should call ngOnChanges with the changed values and the non minified names', () => {
 | |
|         let changesLog: SimpleChange[] = [];
 | |
|         let currValue = 'v1';
 | |
| 
 | |
|         class SomeService implements OnChanges {
 | |
|           a: any;
 | |
|           ngOnChanges(changes: {[name: string]: SimpleChange}) {
 | |
|             changesLog.push(changes['nonMinifiedA']);
 | |
|           }
 | |
|         }
 | |
| 
 | |
|         const {view, rootNodes} = createAndGetRootNodes(compViewDef(
 | |
|             [
 | |
|               elementDef(NodeFlags.None, null !, null !, 1, 'span'),
 | |
|               directiveDef(
 | |
|                   NodeFlags.OnChanges, null !, 0, SomeService, [], {a: [0, 'nonMinifiedA']})
 | |
|             ],
 | |
|             (check, view) => { check(view, 1, ArgumentType.Inline, currValue); }));
 | |
| 
 | |
|         Services.checkAndUpdateView(view);
 | |
|         expect(changesLog).toEqual([new SimpleChange(undefined, 'v1', true)]);
 | |
| 
 | |
|         currValue = 'v2';
 | |
|         changesLog = [];
 | |
|         Services.checkAndUpdateView(view);
 | |
|         expect(changesLog).toEqual([new SimpleChange('v1', 'v2', false)]);
 | |
|       });
 | |
| 
 | |
|       it('should add a DebugContext to errors in provider afterXXX lifecycles', () => {
 | |
|         class SomeService implements AfterContentChecked {
 | |
|           ngAfterContentChecked() { throw new Error('Test'); }
 | |
|         }
 | |
| 
 | |
|         const {view, rootNodes} = createAndGetRootNodes(compViewDef([
 | |
|           elementDef(NodeFlags.None, null !, null !, 1, 'span'),
 | |
|           directiveDef(NodeFlags.AfterContentChecked, null !, 0, SomeService, [], {a: [0, 'a']}),
 | |
|         ]));
 | |
| 
 | |
|         let err: any;
 | |
|         try {
 | |
|           Services.checkAndUpdateView(view);
 | |
|         } catch (e) {
 | |
|           err = e;
 | |
|         }
 | |
|         expect(err).toBeTruthy();
 | |
|         expect(err.message).toBe('Test');
 | |
|         const debugCtx = getDebugContext(err);
 | |
|         expect(debugCtx.view).toBe(view);
 | |
|         expect(debugCtx.nodeIndex).toBe(1);
 | |
|       });
 | |
| 
 | |
|       it('should add a DebugContext to errors inServices.destroyView', () => {
 | |
|         class SomeService implements OnDestroy {
 | |
|           ngOnDestroy() { throw new Error('Test'); }
 | |
|         }
 | |
| 
 | |
|         const {view, rootNodes} = createAndGetRootNodes(compViewDef([
 | |
|           elementDef(NodeFlags.None, null !, null !, 1, 'span'),
 | |
|           directiveDef(NodeFlags.OnDestroy, null !, 0, SomeService, [], {a: [0, 'a']}),
 | |
|         ]));
 | |
| 
 | |
|         let err: any;
 | |
|         try {
 | |
|           Services.destroyView(view);
 | |
|         } catch (e) {
 | |
|           err = e;
 | |
|         }
 | |
|         expect(err).toBeTruthy();
 | |
|         expect(err.message).toBe('Test');
 | |
|         const debugCtx = getDebugContext(err);
 | |
|         expect(debugCtx.view).toBe(view);
 | |
|         expect(debugCtx.nodeIndex).toBe(1);
 | |
|       });
 | |
|     });
 | |
|   });
 | |
| }
 |