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angular-cn/packages/core/test/linker/integration_spec.ts

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/**
* @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 {CommonModule, DOCUMENT} from '@angular/common';
import {Compiler, ComponentFactory, ComponentRef, ErrorHandler, EventEmitter, Host, Inject, Injectable, InjectionToken, Injector, NO_ERRORS_SCHEMA, NgModule, NgModuleRef, OnDestroy, SkipSelf, ViewRef, ɵivyEnabled as ivyEnabled} from '@angular/core';
import {ChangeDetectionStrategy, ChangeDetectorRef, PipeTransform} from '@angular/core/src/change_detection/change_detection';
import {getDebugContext} from '@angular/core/src/errors';
import {ComponentFactoryResolver} from '@angular/core/src/linker/component_factory_resolver';
import {ElementRef} from '@angular/core/src/linker/element_ref';
import {QueryList} from '@angular/core/src/linker/query_list';
import {TemplateRef} from '@angular/core/src/linker/template_ref';
import {ViewContainerRef} from '@angular/core/src/linker/view_container_ref';
import {EmbeddedViewRef} from '@angular/core/src/linker/view_ref';
import {Attribute, Component, ContentChildren, Directive, HostBinding, HostListener, Input, Output, Pipe} from '@angular/core/src/metadata';
import {TestBed, async, fakeAsync, getTestBed, tick} from '@angular/core/testing';
import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
import {createMouseEvent, dispatchEvent, el, isCommentNode} from '@angular/platform-browser/testing/src/browser_util';
import {expect} from '@angular/platform-browser/testing/src/matchers';
import {modifiedInIvy, obsoleteInIvy, onlyInIvy} from '@angular/private/testing';
import {stringify} from '../../src/util/stringify';
const ANCHOR_ELEMENT = new InjectionToken('AnchorElement');
if (ivyEnabled) {
describe('ivy', () => { declareTests(); });
} else {
describe('jit', () => { declareTests({useJit: true}); });
describe('no jit', () => { declareTests({useJit: false}); });
}
function declareTests(config?: {useJit: boolean}) {
describe('integration tests', function() {
beforeEach(() => { TestBed.configureCompiler({...config}); });
describe('react to record changes', function() {
it('should consume text node changes', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div>{{ctxProp}}</div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Hello World!';
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('Hello World!');
});
it('should update text node with a blank string when interpolation evaluates to null', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div>{{null}}{{ctxProp}}</div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = null !;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
});
it('should allow both null and undefined in expressions', () => {
const template = '<div>{{null == undefined}}|{{null === undefined}}</div>';
const fixture = TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(MyComp, {set: {template}})
.createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('true|false');
});
it('should support an arbitrary number of interpolations in an element', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template =
`<div>before{{'0'}}a{{'1'}}b{{'2'}}c{{'3'}}d{{'4'}}e{{'5'}}f{{'6'}}g{{'7'}}h{{'8'}}i{{'9'}}j{{'10'}}after</div>`;
const fixture =
TestBed.overrideComponent(MyComp, {set: {template}}).createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('before0a1b2c3d4e5f6g7h8i9j10after');
});
it('should use a blank string when interpolation evaluates to null or undefined with an arbitrary number of interpolations',
() => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template =
`<div>0{{null}}a{{undefined}}b{{null}}c{{undefined}}d{{null}}e{{undefined}}f{{null}}g{{undefined}}h{{null}}i{{undefined}}j{{null}}1</div>`;
const fixture =
TestBed.overrideComponent(MyComp, {set: {template}}).createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('0abcdefghij1');
});
it('should consume element binding changes', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div [id]="ctxProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Hello World!';
fixture.detectChanges();
expect(getDOM().getProperty(fixture.debugElement.children[0].nativeElement, 'id'))
.toEqual('Hello World!');
});
it('should consume binding to aria-* attributes', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div [attr.aria-label]="ctxProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Initial aria label';
fixture.detectChanges();
expect(getDOM().getAttribute(fixture.debugElement.children[0].nativeElement, 'aria-label'))
.toEqual('Initial aria label');
fixture.componentInstance.ctxProp = 'Changed aria label';
fixture.detectChanges();
expect(getDOM().getAttribute(fixture.debugElement.children[0].nativeElement, 'aria-label'))
.toEqual('Changed aria label');
});
it('should remove an attribute when attribute expression evaluates to null', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div [attr.foo]="ctxProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'bar';
fixture.detectChanges();
expect(getDOM().getAttribute(fixture.debugElement.children[0].nativeElement, 'foo'))
.toEqual('bar');
fixture.componentInstance.ctxProp = null !;
fixture.detectChanges();
expect(fixture.debugElement.children[0].nativeElement.hasAttribute('foo')).toBeFalsy();
});
it('should remove style when when style expression evaluates to null', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div [style.height.px]="ctxProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = '10';
fixture.detectChanges();
expect(getDOM().getStyle(fixture.debugElement.children[0].nativeElement, 'height'))
.toEqual('10px');
fixture.componentInstance.ctxProp = null !;
fixture.detectChanges();
expect(getDOM().getStyle(fixture.debugElement.children[0].nativeElement, 'height'))
.toEqual('');
});
it('should consume binding to property names where attr name and property name do not match',
() => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div [tabindex]="ctxNumProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(getDOM().getProperty(fixture.debugElement.children[0].nativeElement, 'tabIndex'))
.toEqual(0);
fixture.componentInstance.ctxNumProp = 5;
fixture.detectChanges();
expect(getDOM().getProperty(fixture.debugElement.children[0].nativeElement, 'tabIndex'))
.toEqual(5);
});
it('should consume binding to camel-cased properties', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<input [readOnly]="ctxBoolProp">';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(getDOM().getProperty(fixture.debugElement.children[0].nativeElement, 'readOnly'))
.toBeFalsy();
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
expect(getDOM().getProperty(fixture.debugElement.children[0].nativeElement, 'readOnly'))
.toBeTruthy();
});
it('should consume binding to innerHtml', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div innerHtml="{{ctxProp}}"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Some <span>HTML</span>';
fixture.detectChanges();
expect(fixture.debugElement.children[0].nativeElement.innerHTML)
.toEqual('Some <span>HTML</span>');
fixture.componentInstance.ctxProp = 'Some other <div>HTML</div>';
fixture.detectChanges();
expect(fixture.debugElement.children[0].nativeElement.innerHTML)
.toEqual('Some other <div>HTML</div>');
});
modifiedInIvy('Binding to the class property directly works differently')
.it('should consume binding to className using class alias', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div class="initial" [class]="ctxProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const nativeEl = fixture.debugElement.children[0].nativeElement;
fixture.componentInstance.ctxProp = 'foo bar';
fixture.detectChanges();
expect(nativeEl).toHaveCssClass('foo');
expect(nativeEl).toHaveCssClass('bar');
expect(nativeEl).not.toHaveCssClass('initial');
});
it('should consume binding to htmlFor using for alias', () => {
const template = '<label [for]="ctxProp"></label>';
const fixture = TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(MyComp, {set: {template}})
.createComponent(MyComp);
const nativeEl = fixture.debugElement.children[0].nativeElement;
fixture.debugElement.componentInstance.ctxProp = 'foo';
fixture.detectChanges();
expect(getDOM().getProperty(nativeEl, 'htmlFor')).toBe('foo');
});
it('should consume directive watch expression change.', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir]});
const template = '<span>' +
'<div my-dir [elprop]="ctxProp"></div>' +
'<div my-dir elprop="Hi there!"></div>' +
'<div my-dir elprop="Hi {{\'there!\'}}"></div>' +
'<div my-dir elprop="One more {{ctxProp}}"></div>' +
'</span>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Hello World!';
fixture.detectChanges();
const containerSpan = fixture.debugElement.children[0];
expect(containerSpan.children[0].injector.get(MyDir).dirProp).toEqual('Hello World!');
expect(containerSpan.children[1].injector.get(MyDir).dirProp).toEqual('Hi there!');
expect(containerSpan.children[2].injector.get(MyDir).dirProp).toEqual('Hi there!');
expect(containerSpan.children[3].injector.get(MyDir).dirProp)
.toEqual('One more Hello World!');
});
describe('pipes', () => {
it('should support pipes in bindings', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir, DoublePipe]});
const template = '<div my-dir #dir="mydir" [elprop]="ctxProp | double"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'a';
fixture.detectChanges();
const dir = fixture.debugElement.children[0].references !['dir'];
expect(dir.dirProp).toEqual('aa');
});
});
it('should support nested components.', () => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp]});
const template = '<child-cmp></child-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('hello');
});
// GH issue 328 - https://github.com/angular/angular/issues/328
it('should support different directive types on a single node', () => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp, MyDir]});
const template = '<child-cmp my-dir [elprop]="ctxProp"></child-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Hello World!';
fixture.detectChanges();
const tc = fixture.debugElement.children[0];
expect(tc.injector.get(MyDir).dirProp).toEqual('Hello World!');
expect(tc.injector.get(ChildComp).dirProp).toEqual(null);
});
it('should support directives where a binding attribute is not given', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir]});
const template = '<p my-dir></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
});
it('should execute a given directive once, even if specified multiple times', () => {
TestBed.configureTestingModule(
{declarations: [MyComp, DuplicateDir, DuplicateDir, [DuplicateDir, [DuplicateDir]]]});
const template = '<p no-duplicate></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.nativeElement).toHaveText('noduplicate');
});
it('should support directives where a selector matches property binding', () => {
TestBed.configureTestingModule({declarations: [MyComp, IdDir]});
const template = '<p [id]="ctxProp"></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
const idDir = tc.injector.get(IdDir);
fixture.componentInstance.ctxProp = 'some_id';
fixture.detectChanges();
expect(idDir.id).toEqual('some_id');
fixture.componentInstance.ctxProp = 'other_id';
fixture.detectChanges();
expect(idDir.id).toEqual('other_id');
});
it('should support directives where a selector matches event binding', () => {
TestBed.configureTestingModule({declarations: [MyComp, EventDir]});
const template = '<p (customEvent)="doNothing()"></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
expect(tc.injector.get(EventDir)).not.toBeNull();
});
it('should display correct error message for uninitialized @Output', () => {
@Component({selector: 'my-uninitialized-output', template: '<p>It works!</p>'})
class UninitializedOutputComp {
@Output() customEvent !: EventEmitter<any>;
}
const template =
'<my-uninitialized-output (customEvent)="doNothing()"></my-uninitialized-output>';
TestBed.overrideComponent(MyComp, {set: {template}});
TestBed.configureTestingModule({declarations: [MyComp, UninitializedOutputComp]});
expect(() => TestBed.createComponent(MyComp))
.toThrowError('@Output customEvent not initialized in \'UninitializedOutputComp\'.');
});
it('should read directives metadata from their binding token', () => {
TestBed.configureTestingModule({declarations: [MyComp, PrivateImpl, NeedsPublicApi]});
const template = '<div public-api><div needs-public-api></div></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
});
modifiedInIvy('Comment node order changed')
.it('should support template directives via `<ng-template>` elements.', () => {
TestBed.configureTestingModule({declarations: [MyComp, SomeViewport]});
const template =
'<ng-template some-viewport let-greeting="someTmpl"><span>{{greeting}}</span></ng-template>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const childNodesOfWrapper = fixture.nativeElement.childNodes;
// 1 template + 2 copies.
expect(childNodesOfWrapper.length).toBe(3);
expect(childNodesOfWrapper[1]).toHaveText('hello');
expect(childNodesOfWrapper[2]).toHaveText('again');
});
it('should not share empty context for template directives - issue #10045', () => {
TestBed.configureTestingModule({declarations: [MyComp, PollutedContext, NoContext]});
const template =
'<ng-template pollutedContext let-foo="bar">{{foo}}</ng-template><ng-template noContext let-foo="bar">{{foo}}</ng-template>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('baz');
});
it('should not detach views in ViewContainers when the parent view is destroyed.', () => {
TestBed.configureTestingModule({declarations: [MyComp, SomeViewport]});
const template =
'<div *ngIf="ctxBoolProp"><ng-template some-viewport let-greeting="someTmpl"><span>{{greeting}}</span></ng-template></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
const ngIfEl = fixture.debugElement.children[0];
const someViewport: SomeViewport =
ngIfEl.childNodes
.find(
debugElement => debugElement.nativeNode.nodeType ===
Node.COMMENT_NODE) !.injector.get(SomeViewport);
expect(someViewport.container.length).toBe(2);
expect(ngIfEl.children.length).toBe(2);
fixture.componentInstance.ctxBoolProp = false;
fixture.detectChanges();
expect(someViewport.container.length).toBe(2);
expect(fixture.debugElement.children.length).toBe(0);
});
it('should use a comment while stamping out `<ng-template>` elements.', () => {
const fixture =
TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(MyComp, {set: {template: '<ng-template></ng-template>'}})
.createComponent(MyComp);
const childNodesOfWrapper = fixture.nativeElement.childNodes;
expect(childNodesOfWrapper.length).toBe(1);
expect(isCommentNode(childNodesOfWrapper[0])).toBe(true);
});
it('should allow to transplant TemplateRefs into other ViewContainers', () => {
TestBed.configureTestingModule({
declarations: [
MyComp, SomeDirective, CompWithHost, ToolbarComponent, ToolbarViewContainer, ToolbarPart
],
imports: [CommonModule],
schemas: [NO_ERRORS_SCHEMA],
});
const template =
'<some-directive><toolbar><ng-template toolbarpart let-toolbarProp="toolbarProp">{{ctxProp}},{{toolbarProp}},<cmp-with-host></cmp-with-host></ng-template></toolbar></some-directive>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'From myComp';
fixture.detectChanges();
expect(fixture.nativeElement)
.toHaveText('TOOLBAR(From myComp,From toolbar,Component with an injected host)');
});
describe('reference bindings', () => {
it('should assign a component to a ref-', () => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp]});
const template = '<p><child-cmp ref-alice></child-cmp></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.debugElement.children[0].children[0].references !['alice'])
.toBeAnInstanceOf(ChildComp);
});
it('should assign a directive to a ref-', () => {
TestBed.configureTestingModule({declarations: [MyComp, ExportDir]});
const template = '<div><div export-dir #localdir="dir"></div></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.debugElement.children[0].children[0].references !['localdir'])
.toBeAnInstanceOf(ExportDir);
});
it('should assign a directive to a ref when it has multiple exportAs names', () => {
TestBed.configureTestingModule(
{declarations: [MyComp, DirectiveWithMultipleExportAsNames]});
const template = '<div multiple-export-as #x="dirX" #y="dirY"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.debugElement.children[0].references !['x'])
.toBeAnInstanceOf(DirectiveWithMultipleExportAsNames);
expect(fixture.debugElement.children[0].references !['y'])
.toBeAnInstanceOf(DirectiveWithMultipleExportAsNames);
});
it('should make the assigned component accessible in property bindings, even if they were declared before the component',
() => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp]});
const template =
'<ng-template [ngIf]="true">{{alice.ctxProp}}</ng-template>|{{alice.ctxProp}}|<child-cmp ref-alice></child-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('hello|hello|hello');
});
it('should assign two component instances each with a ref-', () => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp]});
const template =
'<p><child-cmp ref-alice></child-cmp><child-cmp ref-bob></child-cmp></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const pEl = fixture.debugElement.children[0];
const alice = pEl.children[0].references !['alice'];
const bob = pEl.children[1].references !['bob'];
expect(alice).toBeAnInstanceOf(ChildComp);
expect(bob).toBeAnInstanceOf(ChildComp);
expect(alice).not.toBe(bob);
});
it('should assign the component instance to a ref- with shorthand syntax', () => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp]});
const template = '<child-cmp #alice></child-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.debugElement.children[0].references !['alice'])
.toBeAnInstanceOf(ChildComp);
});
it('should assign the element instance to a user-defined variable', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div><div ref-alice><i>Hello</i></div></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const value = fixture.debugElement.children[0].children[0].references !['alice'];
expect(value).not.toBe(null);
expect(value.tagName.toLowerCase()).toEqual('div');
});
it('should assign the TemplateRef to a user-defined variable', () => {
const fixture =
TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(
MyComp, {set: {template: '<ng-template ref-alice></ng-template>'}})
.createComponent(MyComp);
const value = fixture.debugElement.childNodes[0].references !['alice'];
expect(value.createEmbeddedView).toBeTruthy();
});
it('should preserve case', () => {
TestBed.configureTestingModule({declarations: [MyComp, ChildComp]});
const template = '<p><child-cmp ref-superAlice></child-cmp></p>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.debugElement.children[0].children[0].references !['superAlice'])
.toBeAnInstanceOf(ChildComp);
});
});
describe('variables', () => {
modifiedInIvy('Comment node order changed')
.it('should allow to use variables in a for loop', () => {
const template =
'<ng-template ngFor [ngForOf]="[1]" let-i><child-cmp-no-template #cmp></child-cmp-no-template>{{i}}-{{cmp.ctxProp}}</ng-template>';
const fixture =
TestBed.configureTestingModule({declarations: [MyComp, ChildCompNoTemplate]})
.overrideComponent(MyComp, {set: {template}})
.createComponent(MyComp);
fixture.detectChanges();
// Get the element at index 2, since index 0 is the <ng-template>.
expect(fixture.nativeElement.childNodes[2]).toHaveText('1-hello');
});
});
describe('OnPush components', () => {
it('should use ChangeDetectorRef to manually request a check', () => {
TestBed.configureTestingModule({declarations: [MyComp, [[PushCmpWithRef]]]});
const template = '<push-cmp-with-ref #cmp></push-cmp-with-ref>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const cmp = fixture.debugElement.children[0].references !['cmp'];
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(1);
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(1);
cmp.propagate();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(2);
});
it('should be checked when its bindings got updated', () => {
TestBed.configureTestingModule(
{declarations: [MyComp, PushCmp, EventCmp], imports: [CommonModule]});
const template = '<push-cmp [prop]="ctxProp" #cmp></push-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const cmp = fixture.debugElement.children[0].references !['cmp'];
fixture.componentInstance.ctxProp = 'one';
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(1);
fixture.componentInstance.ctxProp = 'two';
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(2);
});
if (getDOM().supportsDOMEvents()) {
it('should allow to destroy a component from within a host event handler',
fakeAsync(() => {
TestBed.configureTestingModule({declarations: [MyComp, [[PushCmpWithHostEvent]]]});
const template = '<push-cmp-with-host-event></push-cmp-with-host-event>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
tick();
fixture.detectChanges();
const cmpEl = fixture.debugElement.children[0];
const cmp: PushCmpWithHostEvent = cmpEl.injector.get(PushCmpWithHostEvent);
cmp.ctxCallback = (_: any) => fixture.destroy();
expect(() => cmpEl.triggerEventHandler('click', <Event>{})).not.toThrow();
}));
}
it('should be checked when an event is fired', () => {
TestBed.configureTestingModule(
{declarations: [MyComp, PushCmp, EventCmp], imports: [CommonModule]});
const template = '<push-cmp [prop]="ctxProp" #cmp></push-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const cmpEl = fixture.debugElement.children[0];
const cmp = cmpEl.componentInstance;
fixture.detectChanges();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(1);
// regular element
cmpEl.children[0].triggerEventHandler('click', <Event>{});
fixture.detectChanges();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(2);
// element inside of an *ngIf
cmpEl.children[1].triggerEventHandler('click', <Event>{});
fixture.detectChanges();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(3);
// element inside a nested component
cmpEl.children[2].children[0].triggerEventHandler('click', <Event>{});
fixture.detectChanges();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(4);
// host element
cmpEl.triggerEventHandler('click', <Event>{});
fixture.detectChanges();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(5);
});
it('should not affect updating properties on the component', () => {
TestBed.configureTestingModule({declarations: [MyComp, [[PushCmpWithRef]]]});
const template = '<push-cmp-with-ref [prop]="ctxProp" #cmp></push-cmp-with-ref>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const cmp = fixture.debugElement.children[0].references !['cmp'];
fixture.componentInstance.ctxProp = 'one';
fixture.detectChanges();
expect(cmp.prop).toEqual('one');
fixture.componentInstance.ctxProp = 'two';
fixture.detectChanges();
expect(cmp.prop).toEqual('two');
});
it('should be checked when an async pipe requests a check', fakeAsync(() => {
TestBed.configureTestingModule(
{declarations: [MyComp, PushCmpWithAsyncPipe], imports: [CommonModule]});
const template = '<push-cmp-with-async #cmp></push-cmp-with-async>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
tick();
const cmp: PushCmpWithAsyncPipe = fixture.debugElement.children[0].references !['cmp'];
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(1);
fixture.detectChanges();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(1);
cmp.resolve(2);
tick();
fixture.detectChanges();
expect(cmp.numberOfChecks).toEqual(2);
}));
});
it('should create a component that injects an @Host', () => {
TestBed.configureTestingModule({
declarations: [MyComp, SomeDirective, CompWithHost],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<some-directive>
<p>
<cmp-with-host #child></cmp-with-host>
</p>
</some-directive>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const childComponent =
fixture.debugElement.children[0].children[0].children[0].references !['child'];
expect(childComponent.myHost).toBeAnInstanceOf(SomeDirective);
});
it('should create a component that injects an @Host through viewcontainer directive', () => {
TestBed.configureTestingModule({
declarations: [MyComp, SomeDirective, CompWithHost],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<some-directive>
<p *ngIf="true">
<cmp-with-host #child></cmp-with-host>
</p>
</some-directive>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const tc = fixture.debugElement.children[0].children[0].children[0];
const childComponent = tc.references !['child'];
expect(childComponent.myHost).toBeAnInstanceOf(SomeDirective);
});
it('should support events via EventEmitter on regular elements', async(() => {
TestBed.configureTestingModule(
{declarations: [MyComp, DirectiveEmittingEvent, DirectiveListeningEvent]});
const template = '<div emitter listener></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
const emitter = tc.injector.get(DirectiveEmittingEvent);
const listener = tc.injector.get(DirectiveListeningEvent);
expect(listener.msg).toEqual('');
let eventCount = 0;
emitter.event.subscribe({
next: () => {
eventCount++;
if (eventCount === 1) {
expect(listener.msg).toEqual('fired !');
fixture.destroy();
emitter.fireEvent('fired again !');
} else {
expect(listener.msg).toEqual('fired !');
}
}
});
emitter.fireEvent('fired !');
}));
it('should support events via EventEmitter on template elements', async(() => {
const fixture =
TestBed
.configureTestingModule(
{declarations: [MyComp, DirectiveEmittingEvent, DirectiveListeningEvent]})
.overrideComponent(MyComp, {
set: {
template:
'<ng-template emitter listener (event)="ctxProp=$event"></ng-template>'
}
})
.createComponent(MyComp);
const tc = fixture.debugElement.childNodes.find(
debugElement => debugElement.nativeNode.nodeType === Node.COMMENT_NODE) !;
const emitter = tc.injector.get(DirectiveEmittingEvent);
const myComp = fixture.debugElement.injector.get(MyComp);
const listener = tc.injector.get(DirectiveListeningEvent);
myComp.ctxProp = '';
expect(listener.msg).toEqual('');
emitter.event.subscribe({
next: () => {
expect(listener.msg).toEqual('fired !');
expect(myComp.ctxProp).toEqual('fired !');
}
});
emitter.fireEvent('fired !');
}));
it('should support [()] syntax', async(() => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithTwoWayBinding]});
const template = '<div [(control)]="ctxProp" two-way></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
const dir = tc.injector.get(DirectiveWithTwoWayBinding);
fixture.componentInstance.ctxProp = 'one';
fixture.detectChanges();
expect(dir.control).toEqual('one');
dir.controlChange.subscribe(
{next: () => { expect(fixture.componentInstance.ctxProp).toEqual('two'); }});
dir.triggerChange('two');
}));
it('should support render events', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveListeningDomEvent]});
const template = '<div listener></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
const listener = tc.injector.get(DirectiveListeningDomEvent);
dispatchEvent(tc.nativeElement, 'domEvent');
expect(listener.eventTypes).toEqual([
'domEvent', 'body_domEvent', 'document_domEvent', 'window_domEvent'
]);
fixture.destroy();
listener.eventTypes = [];
dispatchEvent(tc.nativeElement, 'domEvent');
expect(listener.eventTypes).toEqual([]);
});
it('should support render global events', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveListeningDomEvent]});
const template = '<div listener></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const doc = TestBed.get(DOCUMENT);
const tc = fixture.debugElement.children[0];
const listener = tc.injector.get(DirectiveListeningDomEvent);
dispatchEvent(getDOM().getGlobalEventTarget(doc, 'window'), 'domEvent');
expect(listener.eventTypes).toEqual(['window_domEvent']);
listener.eventTypes = [];
dispatchEvent(getDOM().getGlobalEventTarget(doc, 'document'), 'domEvent');
expect(listener.eventTypes).toEqual(['document_domEvent', 'window_domEvent']);
fixture.destroy();
listener.eventTypes = [];
dispatchEvent(getDOM().getGlobalEventTarget(doc, 'body'), 'domEvent');
expect(listener.eventTypes).toEqual([]);
});
it('should support updating host element via hostAttributes on root elements', () => {
@Component({host: {'role': 'button'}, template: ''})
class ComponentUpdatingHostAttributes {
}
TestBed.configureTestingModule({declarations: [ComponentUpdatingHostAttributes]});
const fixture = TestBed.createComponent(ComponentUpdatingHostAttributes);
fixture.detectChanges();
expect(getDOM().getAttribute(fixture.debugElement.nativeElement, 'role')).toEqual('button');
});
it('should support updating host element via hostAttributes on host elements', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveUpdatingHostAttributes]});
const template = '<div update-host-attributes></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(getDOM().getAttribute(fixture.debugElement.children[0].nativeElement, 'role'))
.toEqual('button');
});
it('should support updating host element via hostProperties', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveUpdatingHostProperties]});
const template = '<div update-host-properties></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
const updateHost = tc.injector.get(DirectiveUpdatingHostProperties);
updateHost.id = 'newId';
fixture.detectChanges();
expect(getDOM().getProperty(tc.nativeElement, 'id')).toEqual('newId');
});
it('should not use template variables for expressions in hostProperties', () => {
@Directive({selector: '[host-properties]', host: {'[id]': 'id', '[title]': 'unknownProp'}})
class DirectiveWithHostProps {
id = 'one';
}
const fixture =
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithHostProps]})
.overrideComponent(
MyComp,
{set: {template: `<div *ngFor="let id of ['forId']" host-properties></div>`}})
.createComponent(MyComp);
fixture.detectChanges();
const tc = fixture.debugElement.children[0];
expect(tc.properties['id']).toBe('one');
expect(tc.properties['title']).toBe(undefined);
});
it('should not allow pipes in hostProperties', () => {
@Directive({selector: '[host-properties]', host: {'[id]': 'id | uppercase'}})
class DirectiveWithHostProps {
}
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithHostProps]});
const template = '<div host-properties></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
expect(() => TestBed.createComponent(MyComp))
.toThrowError(/Host binding expression cannot contain pipes/);
});
it('should not use template variables for expressions in hostListeners', () => {
@Directive({selector: '[host-listener]', host: {'(click)': 'doIt(id, unknownProp)'}})
class DirectiveWithHostListener {
id = 'one';
// TODO(issue/24571): remove '!'.
receivedArgs !: any[];
doIt(...args: any[]) { this.receivedArgs = args; }
}
const fixture =
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithHostListener]})
.overrideComponent(
MyComp,
{set: {template: `<div *ngFor="let id of ['forId']" host-listener></div>`}})
.createComponent(MyComp);
fixture.detectChanges();
const tc = fixture.debugElement.children[0];
tc.triggerEventHandler('click', {});
const dir: DirectiveWithHostListener = tc.injector.get(DirectiveWithHostListener);
expect(dir.receivedArgs).toEqual(['one', undefined]);
});
it('should not allow pipes in hostListeners', () => {
@Directive({selector: '[host-listener]', host: {'(click)': 'doIt() | somePipe'}})
class DirectiveWithHostListener {
}
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithHostListener]});
const template = '<div host-listener></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
expect(() => TestBed.createComponent(MyComp))
.toThrowError(/Cannot have a pipe in an action expression/);
});
if (getDOM().supportsDOMEvents()) {
it('should support preventing default on render events', () => {
TestBed.configureTestingModule({
declarations:
[MyComp, DirectiveListeningDomEventPrevent, DirectiveListeningDomEventNoPrevent]
});
const template =
'<input type="checkbox" listenerprevent><input type="checkbox" listenernoprevent>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const dispatchedEvent = createMouseEvent('click');
const dispatchedEvent2 = createMouseEvent('click');
getDOM().dispatchEvent(fixture.debugElement.children[0].nativeElement, dispatchedEvent);
getDOM().dispatchEvent(fixture.debugElement.children[1].nativeElement, dispatchedEvent2);
expect(isPrevented(dispatchedEvent)).toBe(true);
expect(isPrevented(dispatchedEvent2)).toBe(false);
expect(fixture.debugElement.children[0].nativeElement.checked).toBeFalsy();
expect(fixture.debugElement.children[1].nativeElement.checked).toBeTruthy();
});
}
it('should support render global events from multiple directives', () => {
TestBed.configureTestingModule(
{declarations: [MyComp, DirectiveListeningDomEvent, DirectiveListeningDomEventOther]});
const template = '<div *ngIf="ctxBoolProp" listener listenerother></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const doc = TestBed.get(DOCUMENT);
globalCounter = 0;
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
const tc = fixture.debugElement.children[0];
const listener = tc.injector.get(DirectiveListeningDomEvent);
const listenerother = tc.injector.get(DirectiveListeningDomEventOther);
dispatchEvent(getDOM().getGlobalEventTarget(doc, 'window'), 'domEvent');
expect(listener.eventTypes).toEqual(['window_domEvent']);
expect(listenerother.eventType).toEqual('other_domEvent');
expect(globalCounter).toEqual(1);
fixture.componentInstance.ctxBoolProp = false;
fixture.detectChanges();
dispatchEvent(getDOM().getGlobalEventTarget(doc, 'window'), 'domEvent');
expect(globalCounter).toEqual(1);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
dispatchEvent(getDOM().getGlobalEventTarget(doc, 'window'), 'domEvent');
expect(globalCounter).toEqual(2);
// need to destroy to release all remaining global event listeners
fixture.destroy();
});
describe('ViewContainerRef', () => {
beforeEach(() => {
// we need a module to declarate ChildCompUsingService as an entryComponent otherwise the
// factory doesn't get created
@NgModule({
declarations: [MyComp, DynamicViewport, ChildCompUsingService],
entryComponents: [ChildCompUsingService],
schemas: [NO_ERRORS_SCHEMA],
})
class MyModule {
}
TestBed.configureTestingModule({imports: [MyModule]});
TestBed.overrideComponent(
MyComp, {add: {template: '<div><dynamic-vp #dynamic></dynamic-vp></div>'}});
});
describe('.createComponent', () => {
it('should allow to create a component at any bound location', async(() => {
const fixture = TestBed.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]})
.createComponent(MyComp);
const tc = fixture.debugElement.children[0].children[0];
const dynamicVp: DynamicViewport = tc.injector.get(DynamicViewport);
dynamicVp.create();
fixture.detectChanges();
expect(fixture.debugElement.children[0].children[1].nativeElement)
.toHaveText('dynamic greet');
}));
it('should allow to create multiple components at a location', async(() => {
const fixture = TestBed.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]})
.createComponent(MyComp);
const tc = fixture.debugElement.children[0].children[0];
const dynamicVp: DynamicViewport = tc.injector.get(DynamicViewport);
dynamicVp.create();
dynamicVp.create();
fixture.detectChanges();
expect(fixture.debugElement.children[0].children[1].nativeElement)
.toHaveText('dynamic greet');
expect(fixture.debugElement.children[0].children[2].nativeElement)
.toHaveText('dynamic greet');
}));
it('should create a component that has been freshly compiled', () => {
@Component({template: ''})
class RootComp {
constructor(public vc: ViewContainerRef) {}
}
@NgModule({
declarations: [RootComp],
providers: [{provide: 'someToken', useValue: 'someRootValue'}],
})
class RootModule {
}
@Component({template: ''})
class MyComp {
constructor(@Inject('someToken') public someToken: string) {}
}
@NgModule({
declarations: [MyComp],
providers: [{provide: 'someToken', useValue: 'someValue'}],
})
class MyModule {
}
const compFixture =
TestBed.configureTestingModule({imports: [RootModule]}).createComponent(RootComp);
const compiler = <Compiler>TestBed.get(Compiler);
const myCompFactory =
<ComponentFactory<MyComp>>compiler.compileModuleAndAllComponentsSync(MyModule)
.componentFactories[0];
// Note: the ComponentFactory was created directly via the compiler, i.e. it
// does not have an association to an NgModuleRef.
// -> expect the providers of the module that the view container belongs to.
const compRef = compFixture.componentInstance.vc.createComponent(myCompFactory);
expect(compRef.instance.someToken).toBe('someRootValue');
});
it('should create a component with the passed NgModuleRef', () => {
@Component({template: ''})
class RootComp {
constructor(public vc: ViewContainerRef) {}
}
@Component({template: ''})
class MyComp {
constructor(@Inject('someToken') public someToken: string) {}
}
@NgModule({
declarations: [RootComp, MyComp],
entryComponents: [MyComp],
providers: [{provide: 'someToken', useValue: 'someRootValue'}],
})
class RootModule {
}
@NgModule({providers: [{provide: 'someToken', useValue: 'someValue'}]})
class MyModule {
}
const compFixture =
TestBed.configureTestingModule({imports: [RootModule]}).createComponent(RootComp);
const compiler = <Compiler>TestBed.get(Compiler);
const myModule = compiler.compileModuleSync(MyModule).create(TestBed.get(NgModuleRef));
const myCompFactory = (<ComponentFactoryResolver>TestBed.get(ComponentFactoryResolver))
.resolveComponentFactory(MyComp);
// Note: MyComp was declared as entryComponent in the RootModule,
// but we pass MyModule to the createComponent call.
// -> expect the providers of MyModule!
const compRef = compFixture.componentInstance.vc.createComponent(
myCompFactory, undefined, undefined, undefined, myModule);
expect(compRef.instance.someToken).toBe('someValue');
});
it('should create a component with the NgModuleRef of the ComponentFactoryResolver',
() => {
@Component({template: ''})
class RootComp {
constructor(public vc: ViewContainerRef) {}
}
@NgModule({
declarations: [RootComp],
providers: [{provide: 'someToken', useValue: 'someRootValue'}],
})
class RootModule {
}
@Component({template: ''})
class MyComp {
constructor(@Inject('someToken') public someToken: string) {}
}
@NgModule({
declarations: [MyComp],
entryComponents: [MyComp],
providers: [{provide: 'someToken', useValue: 'someValue'}],
})
class MyModule {
}
const compFixture = TestBed.configureTestingModule({imports: [RootModule]})
.createComponent(RootComp);
const compiler = <Compiler>TestBed.get(Compiler);
const myModule =
compiler.compileModuleSync(MyModule).create(TestBed.get(NgModuleRef));
const myCompFactory =
myModule.componentFactoryResolver.resolveComponentFactory(MyComp);
// Note: MyComp was declared as entryComponent in MyModule,
// and we don't pass an explicit ModuleRef to the createComponent call.
// -> expect the providers of MyModule!
const compRef = compFixture.componentInstance.vc.createComponent(myCompFactory);
expect(compRef.instance.someToken).toBe('someValue');
});
});
describe('.insert', () => {
it('should throw with destroyed views', async(() => {
const fixture = TestBed.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]})
.createComponent(MyComp);
const tc = fixture.debugElement.children[0].children[0];
const dynamicVp: DynamicViewport = tc.injector.get(DynamicViewport);
const ref = dynamicVp.create();
fixture.detectChanges();
ref.destroy();
expect(() => {
dynamicVp.insert(ref.hostView);
}).toThrowError('Cannot insert a destroyed View in a ViewContainer!');
}));
});
describe('.move', () => {
it('should throw with destroyed views', async(() => {
const fixture = TestBed.configureTestingModule({schemas: [NO_ERRORS_SCHEMA]})
.createComponent(MyComp);
const tc = fixture.debugElement.children[0].children[0];
const dynamicVp: DynamicViewport = tc.injector.get(DynamicViewport);
const ref = dynamicVp.create();
fixture.detectChanges();
ref.destroy();
expect(() => {
dynamicVp.move(ref.hostView, 1);
}).toThrowError('Cannot move a destroyed View in a ViewContainer!');
}));
});
});
it('should support static attributes', () => {
TestBed.configureTestingModule({declarations: [MyComp, NeedsAttribute]});
const template = '<input static type="text" title>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const tc = fixture.debugElement.children[0];
const needsAttribute = tc.injector.get(NeedsAttribute);
expect(needsAttribute.typeAttribute).toEqual('text');
expect(needsAttribute.staticAttribute).toEqual('');
expect(needsAttribute.fooAttribute).toBeNull();
});
it('should support custom interpolation', () => {
TestBed.configureTestingModule({
declarations: [
MyComp, ComponentWithCustomInterpolationA, ComponentWithCustomInterpolationB,
ComponentWithDefaultInterpolation
]
});
const template = `<div>{{ctxProp}}</div>
<cmp-with-custom-interpolation-a></cmp-with-custom-interpolation-a>
<cmp-with-custom-interpolation-b></cmp-with-custom-interpolation-b>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'Default Interpolation';
fixture.detectChanges();
expect(fixture.nativeElement)
.toHaveText(
'Default InterpolationCustom Interpolation ACustom Interpolation B (Default Interpolation)');
});
});
describe('dependency injection', () => {
it('should support bindings', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveProvidingInjectable, DirectiveConsumingInjectable],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<directive-providing-injectable >
<directive-consuming-injectable #consuming>
</directive-consuming-injectable>
</directive-providing-injectable>
`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const comp = fixture.debugElement.children[0].children[0].references !['consuming'];
expect(comp.injectable).toBeAnInstanceOf(InjectableService);
});
it('should support viewProviders', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveProvidingInjectableInView, DirectiveConsumingInjectable],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<directive-consuming-injectable #consuming>
</directive-consuming-injectable>
`;
TestBed.overrideComponent(DirectiveProvidingInjectableInView, {set: {template}});
const fixture = TestBed.createComponent(DirectiveProvidingInjectableInView);
const comp = fixture.debugElement.children[0].references !['consuming'];
expect(comp.injectable).toBeAnInstanceOf(InjectableService);
});
it('should support unbounded lookup', () => {
TestBed.configureTestingModule({
declarations: [
MyComp, DirectiveProvidingInjectable, DirectiveContainingDirectiveConsumingAnInjectable,
DirectiveConsumingInjectableUnbounded
],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<directive-providing-injectable>
<directive-containing-directive-consuming-an-injectable #dir>
</directive-containing-directive-consuming-an-injectable>
</directive-providing-injectable>
`;
TestBed.overrideComponent(MyComp, {set: {template}});
TestBed.overrideComponent(DirectiveContainingDirectiveConsumingAnInjectable, {
set: {
template: `
<directive-consuming-injectable-unbounded></directive-consuming-injectable-unbounded>
`
}
});
const fixture = TestBed.createComponent(MyComp);
const comp = fixture.debugElement.children[0].children[0].references !['dir'];
expect(comp.directive.injectable).toBeAnInstanceOf(InjectableService);
});
it('should support the event-bus scenario', () => {
TestBed.configureTestingModule({
declarations: [
MyComp, GrandParentProvidingEventBus, ParentProvidingEventBus, ChildConsumingEventBus
],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<grand-parent-providing-event-bus>
<parent-providing-event-bus>
<child-consuming-event-bus>
</child-consuming-event-bus>
</parent-providing-event-bus>
</grand-parent-providing-event-bus>
`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const gpComp = fixture.debugElement.children[0];
const parentComp = gpComp.children[0];
const childComp = parentComp.children[0];
const grandParent = gpComp.injector.get(GrandParentProvidingEventBus);
const parent = parentComp.injector.get(ParentProvidingEventBus);
const child = childComp.injector.get(ChildConsumingEventBus);
expect(grandParent.bus.name).toEqual('grandparent');
expect(parent.bus.name).toEqual('parent');
expect(parent.grandParentBus).toBe(grandParent.bus);
expect(child.bus).toBe(parent.bus);
});
it('should instantiate bindings lazily', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveConsumingInjectable, ComponentProvidingLoggingInjectable],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `
<component-providing-logging-injectable #providing>
<directive-consuming-injectable *ngIf="ctxBoolProp">
</directive-consuming-injectable>
</component-providing-logging-injectable>
`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const providing = fixture.debugElement.children[0].references !['providing'];
expect(providing.created).toBe(false);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
expect(providing.created).toBe(true);
});
});
describe('corner cases', () => {
it('should remove script tags from templates', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = `
<script>alert("Ooops");</script>
<div>before<script>alert("Ooops");</script><span>inside</span>after</div>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(getDOM().querySelectorAll(fixture.nativeElement, 'script').length).toEqual(0);
});
it('should throw when using directives without selector in NgModule declarations', () => {
@Directive({})
class SomeDirective {
}
@Component({selector: 'comp', template: ''})
class SomeComponent {
}
TestBed.configureTestingModule({declarations: [MyComp, SomeDirective, SomeComponent]});
expect(() => TestBed.createComponent(MyComp))
.toThrowError(`Directive ${stringify(SomeDirective)} has no selector, please add it!`);
});
it('should not throw when using directives without selector as base class not in declarations',
() => {
@Directive({})
abstract class Base {
constructor(readonly injector: Injector) {}
}
@Directive()
abstract class EmptyDir {
}
@Directive({inputs: ['a', 'b']})
class TestDirWithInputs {
}
@Component({selector: 'comp', template: ''})
class SomeComponent extends Base {
}
@Component({selector: 'comp2', template: ''})
class SomeComponent2 extends EmptyDir {
}
@Component({selector: 'comp3', template: ''})
class SomeComponent3 extends TestDirWithInputs {
}
TestBed.configureTestingModule(
{declarations: [MyComp, SomeComponent, SomeComponent2, SomeComponent3]});
expect(() => TestBed.createComponent(MyComp)).not.toThrowError();
});
it('should throw when using directives with empty string selector', () => {
@Directive({selector: ''})
class SomeDirective {
}
@Component({selector: 'comp', template: ''})
class SomeComponent {
}
TestBed.configureTestingModule({declarations: [MyComp, SomeDirective, SomeComponent]});
expect(() => TestBed.createComponent(MyComp))
.toThrowError(`Directive ${stringify(SomeDirective)} has no selector, please add it!`);
});
it('should use a default element name for components without selectors', () => {
let noSelectorComponentFactory: ComponentFactory<SomeComponent> = undefined !;
@Component({template: '----'})
class NoSelectorComponent {
}
@Component({selector: 'some-comp', template: '', entryComponents: [NoSelectorComponent]})
class SomeComponent {
constructor(componentFactoryResolver: ComponentFactoryResolver) {
// grab its own component factory
noSelectorComponentFactory =
componentFactoryResolver.resolveComponentFactory(NoSelectorComponent) !;
}
}
TestBed.configureTestingModule({declarations: [SomeComponent, NoSelectorComponent]});
// get the factory
TestBed.createComponent(SomeComponent);
expect(noSelectorComponentFactory.selector).toBe('ng-component');
expect(noSelectorComponentFactory.create(Injector.NULL)
.location.nativeElement.nodeName.toLowerCase())
.toEqual('ng-component');
});
});
describe('error handling', () => {
it('should report a meaningful error when a directive is missing annotation', () => {
TestBed.configureTestingModule({declarations: [MyComp, SomeDirectiveMissingAnnotation]});
expect(() => TestBed.createComponent(MyComp))
.toThrowError(
`Unexpected value '${stringify(SomeDirectiveMissingAnnotation)}' declared by the module 'DynamicTestModule'. Please add a @Pipe/@Directive/@Component annotation.`);
});
it('should report a meaningful error when a component is missing view annotation', () => {
TestBed.configureTestingModule({declarations: [MyComp, ComponentWithoutView]});
try {
TestBed.createComponent(ComponentWithoutView);
} catch (e) {
expect(e.message).toContain(
`No template specified for component ${stringify(ComponentWithoutView)}`);
}
});
obsoleteInIvy('DebugContext is not patched on exceptions in ivy')
.it('should provide an error context when an error happens in DI', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveThrowingAnError],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `<directive-throwing-error></directive-throwing-error>`;
TestBed.overrideComponent(MyComp, {set: {template}});
try {
TestBed.createComponent(MyComp);
throw 'Should throw';
} catch (e) {
const c = getDebugContext(e);
expect(c.componentRenderElement.nodeName.toUpperCase()).toEqual('DIV');
expect((<Injector>c.injector).get).toBeTruthy();
}
});
obsoleteInIvy('DebugContext is not patched on exceptions in ivy')
.it('should provide an error context when an error happens in change detection', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveThrowingAnError]});
const template = `<input [value]="one.two.three" #local>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
try {
fixture.detectChanges();
throw 'Should throw';
} catch (e) {
const c = getDebugContext(e);
expect(c.renderNode.nodeName.toUpperCase()).toEqual('INPUT');
expect(c.componentRenderElement.nodeName.toUpperCase()).toEqual('DIV');
expect((<Injector>c.injector).get).toBeTruthy();
expect(c.context).toEqual(fixture.componentInstance);
expect(c.references['local']).toBeDefined();
}
});
obsoleteInIvy('DebugContext is not patched on exceptions in ivy')
.it('should provide an error context when an error happens in change detection (text node)',
() => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = `<div>{{one.two.three}}</div>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
try {
fixture.detectChanges();
throw 'Should throw';
} catch (e) {
const c = getDebugContext(e);
expect(c.renderNode).toBeTruthy();
}
});
obsoleteInIvy('DebugContext is not patched on exceptions in ivy')
.it('should provide an error context when an error happens in an event handler',
fakeAsync(() => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveEmittingEvent, DirectiveListeningEvent],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `<span emitter listener (event)="throwError()" #local></span>`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
tick();
const tc = fixture.debugElement.children[0];
const errorHandler = tc.injector.get(ErrorHandler);
let err: any;
spyOn(errorHandler, 'handleError').and.callFake((e: any) => err = e);
tc.injector.get(DirectiveEmittingEvent).fireEvent('boom');
expect(err).toBeTruthy();
const c = getDebugContext(err);
expect(c.renderNode.nodeName.toUpperCase()).toEqual('SPAN');
expect(c.componentRenderElement.nodeName.toUpperCase()).toEqual('DIV');
expect((<Injector>c.injector).get).toBeTruthy();
expect(c.context).toEqual(fixture.componentInstance);
expect(c.references['local']).toBeDefined();
}));
});
it('should support imperative views', () => {
TestBed.configureTestingModule({declarations: [MyComp, SimpleImperativeViewComponent]});
const template = '<simple-imp-cmp></simple-imp-cmp>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
expect(fixture.nativeElement).toHaveText('hello imp view');
});
it('should support moving embedded views around', () => {
TestBed.configureTestingModule({
declarations: [MyComp, SomeImperativeViewport],
providers: [{provide: ANCHOR_ELEMENT, useValue: el('<div></div>')}],
});
const template = '<div><div *someImpvp="ctxBoolProp">hello</div></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const anchorElement = getTestBed().get(ANCHOR_ELEMENT);
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(anchorElement).toHaveText('');
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
expect(anchorElement).toHaveText('hello');
fixture.componentInstance.ctxBoolProp = false;
fixture.detectChanges();
expect(fixture.nativeElement).toHaveText('');
});
describe('Property bindings', () => {
modifiedInIvy('Unknown property error thrown during update mode, not creation mode')
.it('should throw on bindings to unknown properties', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div unknown="{{ctxProp}}"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
try {
TestBed.createComponent(MyComp);
throw 'Should throw';
} catch (e) {
expect(e.message).toMatch(
/Template parse errors:\nCan't bind to 'unknown' since it isn't a known property of 'div'. \("<div \[ERROR ->\]unknown="{{ctxProp}}"><\/div>"\): .*MyComp.html@0:5/);
}
});
onlyInIvy('Unknown property error thrown during update mode, not creation mode')
.it('should throw on bindings to unknown properties', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<div unknown="{{ctxProp}}"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
try {
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
throw 'Should throw';
} catch (e) {
expect(e.message).toMatch(
/Template error: Can't bind to 'unknown' since it isn't a known property of 'div'./);
}
});
it('should throw on bindings to unknown properties of containers', () => {
TestBed.configureTestingModule({imports: [CommonModule], declarations: [MyComp]});
const template = '<div *ngFor="let item in ctxArrProp">{{item}}</div>';
TestBed.overrideComponent(MyComp, {set: {template}});
try {
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
throw 'Should throw';
} catch (e) {
expect(e.message).toMatch(
/Can't bind to 'ngForIn' since it isn't a known property of 'div'./);
}
});
it('should not throw for property binding to a non-existing property when there is a matching directive property',
() => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir]});
const template = '<div my-dir [elprop]="ctxProp"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
expect(() => TestBed.createComponent(MyComp)).not.toThrow();
});
it('should not be created when there is a directive with the same property', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithTitle]});
const template = '<span [title]="ctxProp"></span>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'TITLE';
fixture.detectChanges();
const el = getDOM().querySelector(fixture.nativeElement, 'span');
expect(el.title).toBeFalsy();
});
it('should work when a directive uses hostProperty to update the DOM element', () => {
TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithTitleAndHostProperty]});
const template = '<span [title]="ctxProp"></span>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'TITLE';
fixture.detectChanges();
const el = getDOM().querySelector(fixture.nativeElement, 'span');
expect(getDOM().getProperty(el, 'title')).toEqual('TITLE');
});
});
describe('logging property updates', () => {
it('should reflect property values as attributes', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir]});
TestBed.overrideComponent(
MyComp, {set: {template: `<div my-dir [elprop]="ctxProp"></div>`}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'hello';
fixture.detectChanges();
const html = fixture.nativeElement.innerHTML;
expect(html).toContain('ng-reflect-dir-prop="hello"');
});
it('should reflect property values on unbound inputs', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir]});
TestBed.overrideComponent(
MyComp, {set: {template: `<div my-dir elprop="hello" title="Reflect test"></div>`}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const html = fixture.nativeElement.innerHTML;
expect(html).toContain('ng-reflect-dir-prop="hello"');
expect(html).not.toContain('ng-reflect-title');
});
it(`should work with prop names containing '$'`, () => {
TestBed.configureTestingModule({declarations: [ParentCmp, SomeCmpWithInput]});
const fixture = TestBed.createComponent(ParentCmp);
fixture.detectChanges();
const html = fixture.nativeElement.innerHTML;
expect(html).toContain('ng-reflect-test_="hello"');
});
it('should reflect property values on template comments', () => {
const fixture =
TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(
MyComp, {set: {template: `<ng-template [ngIf]="ctxBoolProp"></ng-template>`}})
.createComponent(MyComp);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
const html = fixture.nativeElement.innerHTML;
expect(html).toContain('"ng-reflect-ng-if": "true"');
});
it('should reflect property values on ng-containers', () => {
const fixture =
TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(
MyComp,
{set: {template: `<ng-container *ngIf="ctxBoolProp">content</ng-container>`}})
.createComponent(MyComp);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
const html = fixture.nativeElement.innerHTML;
expect(html).toContain('"ng-reflect-ng-if": "true"');
});
it('should reflect property values of multiple directive bound to the same input name',
() => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyDir2]});
TestBed.overrideComponent(
MyComp, {set: {template: `<div my-dir my-dir2 [elprop]="ctxProp"></div>`}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'hello';
fixture.detectChanges();
const html = fixture.nativeElement.innerHTML;
expect(html).toContain('ng-reflect-dir-prop="hello"');
expect(html).toContain('ng-reflect-dir-prop2="hello"');
});
it('should indicate when toString() throws', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir]});
const template = '<div my-dir [elprop]="toStringThrow"></div>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
expect(fixture.nativeElement.innerHTML).toContain('[ERROR]');
});
it('should not reflect undefined values', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyDir2]});
TestBed.overrideComponent(
MyComp, {set: {template: `<div my-dir [elprop]="ctxProp"></div>`}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'hello';
fixture.detectChanges();
expect(fixture.nativeElement.innerHTML).toContain('ng-reflect-dir-prop="hello"');
fixture.componentInstance.ctxProp = undefined !;
fixture.detectChanges();
expect(fixture.nativeElement.innerHTML).not.toContain('ng-reflect-');
});
it('should not reflect null values', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyDir2]});
TestBed.overrideComponent(
MyComp, {set: {template: `<div my-dir [elprop]="ctxProp"></div>`}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = 'hello';
fixture.detectChanges();
expect(fixture.nativeElement.innerHTML).toContain('ng-reflect-dir-prop="hello"');
fixture.componentInstance.ctxProp = null !;
fixture.detectChanges();
expect(fixture.nativeElement.innerHTML).not.toContain('ng-reflect-');
});
it('should reflect empty strings', () => {
TestBed.configureTestingModule({declarations: [MyComp, MyDir, MyDir2]});
TestBed.overrideComponent(
MyComp, {set: {template: `<div my-dir [elprop]="ctxProp"></div>`}});
const fixture = TestBed.createComponent(MyComp);
fixture.componentInstance.ctxProp = '';
fixture.detectChanges();
expect(fixture.nativeElement.innerHTML).toContain('ng-reflect-dir-prop=""');
});
it('should not reflect in comment nodes when the value changes to undefined', () => {
const fixture =
TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(
MyComp, {set: {template: `<ng-template [ngIf]="ctxBoolProp"></ng-template>`}})
.createComponent(MyComp);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
let html = fixture.nativeElement.innerHTML;
expect(html).toContain('bindings={');
expect(html).toContain('"ng-reflect-ng-if": "true"');
fixture.componentInstance.ctxBoolProp = undefined !;
fixture.detectChanges();
html = fixture.nativeElement.innerHTML;
expect(html).toContain('bindings={');
expect(html).not.toContain('ng-reflect');
});
it('should reflect in comment nodes when the value changes to null', () => {
const fixture =
TestBed.configureTestingModule({declarations: [MyComp]})
.overrideComponent(
MyComp, {set: {template: `<ng-template [ngIf]="ctxBoolProp"></ng-template>`}})
.createComponent(MyComp);
fixture.componentInstance.ctxBoolProp = true;
fixture.detectChanges();
let html = fixture.nativeElement.innerHTML;
expect(html).toContain('bindings={');
expect(html).toContain('"ng-reflect-ng-if": "true"');
fixture.componentInstance.ctxBoolProp = null !;
fixture.detectChanges();
html = fixture.nativeElement.innerHTML;
expect(html).toContain('bindings={');
expect(html).toContain('"ng-reflect-ng-if": null');
});
});
describe('property decorators', () => {
it('should support property decorators', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveWithPropDecorators],
schemas: [NO_ERRORS_SCHEMA],
});
const template = '<with-prop-decorators elProp="aaa"></with-prop-decorators>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const dir = fixture.debugElement.children[0].injector.get(DirectiveWithPropDecorators);
expect(dir.dirProp).toEqual('aaa');
});
it('should support host binding decorators', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveWithPropDecorators],
schemas: [NO_ERRORS_SCHEMA],
});
const template = '<with-prop-decorators></with-prop-decorators>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const dir = fixture.debugElement.children[0].injector.get(DirectiveWithPropDecorators);
dir.myAttr = 'aaa';
fixture.detectChanges();
expect(fixture.debugElement.children[0].nativeElement.outerHTML).toContain('my-attr="aaa"');
});
if (getDOM().supportsDOMEvents()) {
it('should support event decorators', fakeAsync(() => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveWithPropDecorators],
schemas: [NO_ERRORS_SCHEMA],
});
const template = `<with-prop-decorators (elEvent)="ctxProp='called'">`;
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
tick();
const emitter =
fixture.debugElement.children[0].injector.get(DirectiveWithPropDecorators);
emitter.fireEvent('fired !');
tick();
expect(fixture.componentInstance.ctxProp).toEqual('called');
}));
it('should support host listener decorators', () => {
TestBed.configureTestingModule({
declarations: [MyComp, DirectiveWithPropDecorators],
schemas: [NO_ERRORS_SCHEMA],
});
const template = '<with-prop-decorators></with-prop-decorators>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const dir = fixture.debugElement.children[0].injector.get(DirectiveWithPropDecorators);
const native = fixture.debugElement.children[0].nativeElement;
getDOM().dispatchEvent(native, createMouseEvent('click'));
expect(dir.target).toBe(native);
});
}
it('should support defining views in the component decorator', () => {
TestBed.configureTestingModule({
declarations: [MyComp, ComponentWithTemplate],
imports: [CommonModule],
schemas: [NO_ERRORS_SCHEMA],
});
const template = '<component-with-template></component-with-template>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
fixture.detectChanges();
const native = fixture.debugElement.children[0].nativeElement;
expect(native).toHaveText('No View Decorator: 123');
});
});
describe('whitespaces in templates', () => {
it('should not remove whitespaces by default', async(() => {
@Component({
selector: 'comp',
template: '<span>foo</span> <span>bar</span>',
})
class MyCmp {
}
const f = TestBed.configureTestingModule({declarations: [MyCmp]}).createComponent(MyCmp);
f.detectChanges();
expect(f.nativeElement.childNodes.length).toBe(2);
}));
it('should not remove whitespaces when explicitly requested not to do so', async(() => {
@Component({
selector: 'comp',
template: '<span>foo</span> <span>bar</span>',
preserveWhitespaces: true,
})
class MyCmp {
}
const f = TestBed.configureTestingModule({declarations: [MyCmp]}).createComponent(MyCmp);
f.detectChanges();
expect(f.nativeElement.childNodes.length).toBe(3);
}));
it('should remove whitespaces when explicitly requested to do so', async(() => {
@Component({
selector: 'comp',
template: '<span>foo</span> <span>bar</span>',
preserveWhitespaces: false,
})
class MyCmp {
}
const f = TestBed.configureTestingModule({declarations: [MyCmp]}).createComponent(MyCmp);
f.detectChanges();
expect(f.nativeElement.childNodes.length).toBe(2);
}));
});
if (getDOM().supportsDOMEvents()) {
describe('svg', () => {
it('should support svg elements', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template = '<svg><use xlink:href="Port" /></svg>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const el = fixture.nativeElement;
const svg = el.childNodes[0];
const use = svg.childNodes[0];
expect(getDOM().getProperty(<Element>svg, 'namespaceURI'))
.toEqual('http://www.w3.org/2000/svg');
expect(getDOM().getProperty(<Element>use, 'namespaceURI'))
.toEqual('http://www.w3.org/2000/svg');
const firstAttribute = getDOM().getProperty(<Element>use, 'attributes')[0];
expect(firstAttribute.name).toEqual('xlink:href');
expect(firstAttribute.namespaceURI).toEqual('http://www.w3.org/1999/xlink');
});
it('should support foreignObjects with document fragments', () => {
TestBed.configureTestingModule({declarations: [MyComp]});
const template =
'<svg><foreignObject><xhtml:div><p>Test</p></xhtml:div></foreignObject></svg>';
TestBed.overrideComponent(MyComp, {set: {template}});
const fixture = TestBed.createComponent(MyComp);
const el = fixture.nativeElement;
const svg = el.childNodes[0];
const foreignObject = svg.childNodes[0];
const p = foreignObject.childNodes[0];
expect(getDOM().getProperty(<Element>svg, 'namespaceURI'))
.toEqual('http://www.w3.org/2000/svg');
expect(getDOM().getProperty(<Element>foreignObject, 'namespaceURI'))
.toEqual('http://www.w3.org/2000/svg');
expect(getDOM().getProperty(<Element>p, 'namespaceURI'))
.toEqual('http://www.w3.org/1999/xhtml');
});
});
describe('attributes', () => {
it('should support attributes with namespace', () => {
TestBed.configureTestingModule({declarations: [MyComp, SomeCmp]});
const template = '<svg:use xlink:href="#id" />';
TestBed.overrideComponent(SomeCmp, {set: {template}});
const fixture = TestBed.createComponent(SomeCmp);
const useEl = fixture.nativeElement.firstChild;
expect(useEl.getAttributeNS('http://www.w3.org/1999/xlink', 'href')).toEqual('#id');
});
it('should support binding to attributes with namespace', () => {
TestBed.configureTestingModule({declarations: [MyComp, SomeCmp]});
const template = '<svg:use [attr.xlink:href]="value" />';
TestBed.overrideComponent(SomeCmp, {set: {template}});
const fixture = TestBed.createComponent(SomeCmp);
const cmp = fixture.componentInstance;
const useEl = fixture.nativeElement.firstChild;
cmp.value = '#id';
fixture.detectChanges();
expect(useEl.getAttributeNS('http://www.w3.org/1999/xlink', 'href')).toEqual('#id');
cmp.value = null;
fixture.detectChanges();
expect(useEl.hasAttributeNS('http://www.w3.org/1999/xlink', 'href')).toEqual(false);
});
});
}
});
}
@Component({selector: 'cmp-with-default-interpolation', template: `{{text}}`})
class ComponentWithDefaultInterpolation {
text = 'Default Interpolation';
}
@Component({
selector: 'cmp-with-custom-interpolation-a',
template: `<div>{%text%}</div>`,
interpolation: ['{%', '%}']
})
class ComponentWithCustomInterpolationA {
text = 'Custom Interpolation A';
}
@Component({
selector: 'cmp-with-custom-interpolation-b',
template:
`<div>{**text%}</div> (<cmp-with-default-interpolation></cmp-with-default-interpolation>)`,
interpolation: ['{**', '%}']
})
class ComponentWithCustomInterpolationB {
text = 'Custom Interpolation B';
}
@Injectable()
class MyService {
greeting: string;
constructor() { this.greeting = 'hello'; }
}
@Component({selector: 'simple-imp-cmp', template: ''})
class SimpleImperativeViewComponent {
done: any;
constructor(self: ElementRef) {
const hostElement = self.nativeElement;
getDOM().appendChild(hostElement, el('hello imp view'));
}
}
@Directive({selector: 'dynamic-vp'})
class DynamicViewport {
private componentFactory: ComponentFactory<ChildCompUsingService>;
private injector: Injector;
constructor(private vc: ViewContainerRef, componentFactoryResolver: ComponentFactoryResolver) {
const myService = new MyService();
myService.greeting = 'dynamic greet';
this.injector = Injector.create([{provide: MyService, useValue: myService}], vc.injector);
this.componentFactory =
componentFactoryResolver.resolveComponentFactory(ChildCompUsingService) !;
}
create(): ComponentRef<ChildCompUsingService> {
return this.vc.createComponent(this.componentFactory, this.vc.length, this.injector);
}
insert(viewRef: ViewRef, index?: number): ViewRef { return this.vc.insert(viewRef, index); }
move(viewRef: ViewRef, currentIndex: number): ViewRef {
return this.vc.move(viewRef, currentIndex);
}
}
@Directive({selector: '[my-dir]', inputs: ['dirProp: elprop'], exportAs: 'mydir'})
class MyDir {
dirProp: string;
constructor() { this.dirProp = ''; }
}
@Directive({selector: '[my-dir2]', inputs: ['dirProp2: elprop'], exportAs: 'mydir2'})
class MyDir2 {
dirProp2: string;
constructor() { this.dirProp2 = ''; }
}
@Directive({selector: '[title]', inputs: ['title']})
class DirectiveWithTitle {
// TODO(issue/24571): remove '!'.
title !: string;
}
@Directive({selector: '[title]', inputs: ['title'], host: {'[title]': 'title'}})
class DirectiveWithTitleAndHostProperty {
// TODO(issue/24571): remove '!'.
title !: string;
}
@Component({selector: 'event-cmp', template: '<div (click)="noop()"></div>'})
class EventCmp {
noop() {}
}
@Component({
selector: 'push-cmp',
inputs: ['prop'],
host: {'(click)': 'true'},
changeDetection: ChangeDetectionStrategy.OnPush,
template:
'{{field}}<div (click)="noop()"></div><div *ngIf="true" (click)="noop()"></div><event-cmp></event-cmp>'
})
class PushCmp {
numberOfChecks: number;
prop: any;
constructor() { this.numberOfChecks = 0; }
noop() {}
get field() {
this.numberOfChecks++;
return 'fixed';
}
}
@Component({
selector: 'push-cmp-with-ref',
inputs: ['prop'],
changeDetection: ChangeDetectionStrategy.OnPush,
template: '{{field}}'
})
class PushCmpWithRef {
numberOfChecks: number;
ref: ChangeDetectorRef;
prop: any;
constructor(ref: ChangeDetectorRef) {
this.numberOfChecks = 0;
this.ref = ref;
}
get field() {
this.numberOfChecks++;
return 'fixed';
}
propagate() { this.ref.markForCheck(); }
}
@Component({
selector: 'push-cmp-with-host-event',
host: {'(click)': 'ctxCallback($event)'},
changeDetection: ChangeDetectionStrategy.OnPush,
template: ''
})
class PushCmpWithHostEvent {
ctxCallback: Function = (_: any) => {};
}
@Component({
selector: 'push-cmp-with-async',
changeDetection: ChangeDetectionStrategy.OnPush,
template: '{{field | async}}'
})
class PushCmpWithAsyncPipe {
numberOfChecks: number = 0;
// TODO(issue/24571): remove '!'.
resolve !: (result: any) => void;
promise: Promise<any>;
constructor() {
this.promise = new Promise((resolve) => { this.resolve = resolve; });
}
get field() {
this.numberOfChecks++;
return this.promise;
}
}
@Component({selector: 'my-comp', template: ''})
class MyComp {
ctxProp: string;
ctxNumProp: number;
ctxBoolProp: boolean;
ctxArrProp: number[];
toStringThrow = {toString: function() { throw 'boom'; }};
constructor() {
this.ctxProp = 'initial value';
this.ctxNumProp = 0;
this.ctxBoolProp = false;
this.ctxArrProp = [0, 1, 2];
}
throwError() { throw 'boom'; }
}
@Component({
selector: 'child-cmp',
inputs: ['dirProp'],
viewProviders: [MyService],
template: '{{ctxProp}}'
})
class ChildComp {
ctxProp: string;
dirProp: string|null;
constructor(service: MyService) {
this.ctxProp = service.greeting;
this.dirProp = null;
}
}
@Component({selector: 'child-cmp-no-template', template: ''})
class ChildCompNoTemplate {
ctxProp: string = 'hello';
}
@Component({selector: 'child-cmp-svc', template: '{{ctxProp}}'})
class ChildCompUsingService {
ctxProp: string;
constructor(service: MyService) { this.ctxProp = service.greeting; }
}
@Directive({selector: 'some-directive'})
class SomeDirective {
}
class SomeDirectiveMissingAnnotation {}
@Component({
selector: 'cmp-with-host',
template: '<p>Component with an injected host</p>',
})
class CompWithHost {
myHost: SomeDirective;
constructor(@Host() someComp: SomeDirective) { this.myHost = someComp; }
}
@Component({selector: '[child-cmp2]', viewProviders: [MyService]})
class ChildComp2 {
ctxProp: string;
dirProp: string|null;
constructor(service: MyService) {
this.ctxProp = service.greeting;
this.dirProp = null;
}
}
class SomeViewportContext {
constructor(public someTmpl: string) {}
}
@Directive({selector: '[some-viewport]'})
class SomeViewport {
constructor(public container: ViewContainerRef, templateRef: TemplateRef<SomeViewportContext>) {
container.createEmbeddedView(templateRef, new SomeViewportContext('hello'));
container.createEmbeddedView(templateRef, new SomeViewportContext('again'));
}
}
@Directive({selector: '[pollutedContext]'})
class PollutedContext {
constructor(private tplRef: TemplateRef<any>, private vcRef: ViewContainerRef) {
const evRef = this.vcRef.createEmbeddedView(this.tplRef);
evRef.context.bar = 'baz';
}
}
@Directive({selector: '[noContext]'})
class NoContext {
constructor(private tplRef: TemplateRef<any>, private vcRef: ViewContainerRef) {
this.vcRef.createEmbeddedView(this.tplRef);
}
}
@Pipe({name: 'double'})
class DoublePipe implements PipeTransform, OnDestroy {
ngOnDestroy() {}
transform(value: any) { return `${value}${value}`; }
}
@Directive({selector: '[emitter]', outputs: ['event']})
class DirectiveEmittingEvent {
msg: string;
event: EventEmitter<any>;
constructor() {
this.msg = '';
this.event = new EventEmitter();
}
fireEvent(msg: string) { this.event.emit(msg); }
}
@Directive({selector: '[update-host-attributes]', host: {'role': 'button'}})
class DirectiveUpdatingHostAttributes {
}
@Directive({selector: '[update-host-properties]', host: {'[id]': 'id'}})
class DirectiveUpdatingHostProperties {
id: string;
constructor() { this.id = 'one'; }
}
@Directive({selector: '[listener]', host: {'(event)': 'onEvent($event)'}})
class DirectiveListeningEvent {
msg: string;
constructor() { this.msg = ''; }
onEvent(msg: string) { this.msg = msg; }
}
@Directive({
selector: '[listener]',
host: {
'(domEvent)': 'onEvent($event.type)',
'(window:domEvent)': 'onWindowEvent($event.type)',
'(document:domEvent)': 'onDocumentEvent($event.type)',
'(body:domEvent)': 'onBodyEvent($event.type)'
}
})
class DirectiveListeningDomEvent {
eventTypes: string[] = [];
onEvent(eventType: string) { this.eventTypes.push(eventType); }
onWindowEvent(eventType: string) { this.eventTypes.push('window_' + eventType); }
onDocumentEvent(eventType: string) { this.eventTypes.push('document_' + eventType); }
onBodyEvent(eventType: string) { this.eventTypes.push('body_' + eventType); }
}
let globalCounter = 0;
@Directive({selector: '[listenerother]', host: {'(window:domEvent)': 'onEvent($event.type)'}})
class DirectiveListeningDomEventOther {
eventType: string;
constructor() { this.eventType = ''; }
onEvent(eventType: string) {
globalCounter++;
this.eventType = 'other_' + eventType;
}
}
@Directive({selector: '[listenerprevent]', host: {'(click)': 'onEvent($event)'}})
class DirectiveListeningDomEventPrevent {
onEvent(event: any) { return false; }
}
@Directive({selector: '[listenernoprevent]', host: {'(click)': 'onEvent($event)'}})
class DirectiveListeningDomEventNoPrevent {
onEvent(event: any) { return true; }
}
@Directive({selector: '[id]', inputs: ['id']})
class IdDir {
// TODO(issue/24571): remove '!'.
id !: string;
}
@Directive({selector: '[customEvent]'})
class EventDir {
@Output() customEvent = new EventEmitter();
doSomething() {}
}
@Directive({selector: '[static]'})
class NeedsAttribute {
typeAttribute: string;
staticAttribute: string;
fooAttribute: string;
constructor(
@Attribute('type') typeAttribute: string, @Attribute('static') staticAttribute: string,
@Attribute('foo') fooAttribute: string) {
this.typeAttribute = typeAttribute;
this.staticAttribute = staticAttribute;
this.fooAttribute = fooAttribute;
}
}
@Injectable()
class PublicApi {
}
@Directive({
selector: '[public-api]',
providers: [{provide: PublicApi, useExisting: PrivateImpl, deps: []}]
})
class PrivateImpl extends PublicApi {
}
@Directive({selector: '[needs-public-api]'})
class NeedsPublicApi {
constructor(@Host() api: PublicApi) { expect(api instanceof PrivateImpl).toBe(true); }
}
class ToolbarContext {
constructor(public toolbarProp: string) {}
}
@Directive({selector: '[toolbarpart]'})
class ToolbarPart {
templateRef: TemplateRef<ToolbarContext>;
constructor(templateRef: TemplateRef<ToolbarContext>) { this.templateRef = templateRef; }
}
@Directive({selector: '[toolbarVc]', inputs: ['toolbarVc']})
class ToolbarViewContainer {
constructor(public vc: ViewContainerRef) {}
set toolbarVc(part: ToolbarPart) {
this.vc.createEmbeddedView(part.templateRef, new ToolbarContext('From toolbar'), 0);
}
}
@Component({
selector: 'toolbar',
template: 'TOOLBAR(<div *ngFor="let part of query" [toolbarVc]="part"></div>)',
})
class ToolbarComponent {
// TODO(issue/24571): remove '!'.
@ContentChildren(ToolbarPart) query !: QueryList<ToolbarPart>;
ctxProp: string = 'hello world';
constructor() {}
}
@Directive({selector: '[two-way]', inputs: ['control'], outputs: ['controlChange']})
class DirectiveWithTwoWayBinding {
controlChange = new EventEmitter();
control: any = null;
triggerChange(value: any) { this.controlChange.emit(value); }
}
@Injectable()
class InjectableService {
}
function createInjectableWithLogging(inj: Injector) {
inj.get(ComponentProvidingLoggingInjectable).created = true;
return new InjectableService();
}
@Component({
selector: 'component-providing-logging-injectable',
providers:
[{provide: InjectableService, useFactory: createInjectableWithLogging, deps: [Injector]}],
template: ''
})
class ComponentProvidingLoggingInjectable {
created: boolean = false;
}
@Directive({selector: 'directive-providing-injectable', providers: [[InjectableService]]})
class DirectiveProvidingInjectable {
}
@Component({
selector: 'directive-providing-injectable',
viewProviders: [[InjectableService]],
template: ''
})
class DirectiveProvidingInjectableInView {
}
@Component({
selector: 'directive-providing-injectable',
providers: [{provide: InjectableService, useValue: 'host'}],
viewProviders: [{provide: InjectableService, useValue: 'view'}],
template: ''
})
class DirectiveProvidingInjectableInHostAndView {
}
@Component({selector: 'directive-consuming-injectable', template: ''})
class DirectiveConsumingInjectable {
injectable: any;
constructor(@Host() @Inject(InjectableService) injectable: any) { this.injectable = injectable; }
}
@Component({selector: 'directive-containing-directive-consuming-an-injectable'})
class DirectiveContainingDirectiveConsumingAnInjectable {
directive: any;
}
@Component({selector: 'directive-consuming-injectable-unbounded', template: ''})
class DirectiveConsumingInjectableUnbounded {
injectable: any;
constructor(
injectable: InjectableService,
@SkipSelf() parent: DirectiveContainingDirectiveConsumingAnInjectable) {
this.injectable = injectable;
parent.directive = this;
}
}
class EventBus {
parentEventBus: EventBus;
name: string;
constructor(parentEventBus: EventBus, name: string) {
this.parentEventBus = parentEventBus;
this.name = name;
}
}
@Directive({
selector: 'grand-parent-providing-event-bus',
providers: [{provide: EventBus, useValue: new EventBus(null !, 'grandparent')}]
})
class GrandParentProvidingEventBus {
bus: EventBus;
constructor(bus: EventBus) { this.bus = bus; }
}
function createParentBus(peb: EventBus) {
return new EventBus(peb, 'parent');
}
@Component({
selector: 'parent-providing-event-bus',
providers: [{provide: EventBus, useFactory: createParentBus, deps: [[EventBus, new SkipSelf()]]}],
template: `<child-consuming-event-bus></child-consuming-event-bus>`
})
class ParentProvidingEventBus {
bus: EventBus;
grandParentBus: EventBus;
constructor(bus: EventBus, @SkipSelf() grandParentBus: EventBus) {
this.bus = bus;
this.grandParentBus = grandParentBus;
}
}
@Directive({selector: 'child-consuming-event-bus'})
class ChildConsumingEventBus {
bus: EventBus;
constructor(@SkipSelf() bus: EventBus) { this.bus = bus; }
}
@Directive({selector: '[someImpvp]', inputs: ['someImpvp']})
class SomeImperativeViewport {
view: EmbeddedViewRef<Object>|null;
anchor: any;
constructor(
public vc: ViewContainerRef, public templateRef: TemplateRef<Object>,
@Inject(ANCHOR_ELEMENT) anchor: any) {
this.view = null;
this.anchor = anchor;
}
set someImpvp(value: boolean) {
if (this.view) {
this.vc.clear();
this.view = null;
}
if (value) {
this.view = this.vc.createEmbeddedView(this.templateRef);
const nodes = this.view.rootNodes;
for (let i = 0; i < nodes.length; i++) {
getDOM().appendChild(this.anchor, nodes[i]);
}
}
}
}
@Directive({selector: '[export-dir]', exportAs: 'dir'})
class ExportDir {
}
@Directive({selector: '[multiple-export-as]', exportAs: 'dirX, dirY'})
export class DirectiveWithMultipleExportAsNames {
}
@Component({selector: 'comp'})
class ComponentWithoutView {
}
@Directive({selector: '[no-duplicate]'})
class DuplicateDir {
constructor(elRef: ElementRef) {
getDOM().setText(elRef.nativeElement, elRef.nativeElement.textContent + 'noduplicate');
}
}
@Directive({selector: '[no-duplicate]'})
class OtherDuplicateDir {
constructor(elRef: ElementRef) {
getDOM().setText(elRef.nativeElement, elRef.nativeElement.textContent + 'othernoduplicate');
}
}
@Directive({selector: 'directive-throwing-error'})
class DirectiveThrowingAnError {
constructor() { throw new Error('BOOM'); }
}
@Component({
selector: 'component-with-template',
template: `No View Decorator: <div *ngFor="let item of items">{{item}}</div>`
})
class ComponentWithTemplate {
items = [1, 2, 3];
}
@Directive({selector: 'with-prop-decorators'})
class DirectiveWithPropDecorators {
target: any;
// TODO(issue/24571): remove '!'.
@Input('elProp') dirProp !: string;
@Output('elEvent') event = new EventEmitter();
// TODO(issue/24571): remove '!'.
@HostBinding('attr.my-attr') myAttr !: string;
@HostListener('click', ['$event.target'])
onClick(target: any) { this.target = target; }
fireEvent(msg: any) { this.event.emit(msg); }
}
@Component({selector: 'some-cmp'})
class SomeCmp {
value: any;
}
@Component({
selector: 'parent-cmp',
template: `<cmp [test$]="name"></cmp>`,
})
export class ParentCmp {
name: string = 'hello';
}
@Component({selector: 'cmp', template: ''})
class SomeCmpWithInput {
@Input() test$: any;
}
function isPrevented(evt: Event): boolean {
return evt.defaultPrevented || evt.returnValue != null && !evt.returnValue;
}
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