628 lines
22 KiB
TypeScript
628 lines
22 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC 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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import {initMockFileSystem} from '@angular/compiler-cli/src/ngtsc/file_system/testing';
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import * as ts from 'typescript/lib/tsserverlibrary';
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import {LanguageServiceTestEnv, Project} from '../testing';
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function quickInfoSkeleton(): {[fileName: string]: string} {
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return {
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'app.ts': `
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import {Component, Directive, EventEmitter, Input, NgModule, Output, Pipe, PipeTransform} from '@angular/core';
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import {CommonModule} from '@angular/common';
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export interface Address {
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streetName: string;
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}
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/** The most heroic being. */
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export interface Hero {
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id: number;
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name: string;
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address?: Address;
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}
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/**
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* This Component provides the \`test-comp\` selector.
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*/
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/*BeginTestComponent*/ @Component({
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selector: 'test-comp',
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template: '<div>Testing: {{name}}</div>',
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})
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export class TestComponent {
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@Input('tcName') name!: string;
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@Output('test') testEvent!: EventEmitter<string>;
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} /*EndTestComponent*/
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@Component({
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selector: 'app-cmp',
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templateUrl: './app.html',
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})
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export class AppCmp {
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hero!: Hero;
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heroes!: Hero[];
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readonlyHeroes!: ReadonlyArray<Readonly<Hero>>;
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/**
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* This is the title of the \`AppCmp\` Component.
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*/
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title!: string;
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constNames!: [{readonly name: 'name'}];
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birthday!: Date;
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anyValue!: any;
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myClick(event: any) {}
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setTitle(newTitle: string) {}
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trackByFn!: any;
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name!: any;
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}
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@Directive({
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selector: '[string-model]',
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exportAs: 'stringModel',
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})
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export class StringModel {
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@Input() model!: string;
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@Output() modelChange!: EventEmitter<string>;
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}
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@Directive({selector: 'button[custom-button][compound]'})
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export class CompoundCustomButtonDirective {
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@Input() config?: {color?: string};
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}
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@NgModule({
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declarations: [
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AppCmp,
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CompoundCustomButtonDirective,
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StringModel,
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TestComponent,
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],
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imports: [
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CommonModule,
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],
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})
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export class AppModule {}
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`,
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'app.html': `Will be overridden`,
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};
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}
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describe('quick info', () => {
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let env: LanguageServiceTestEnv;
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let project: Project;
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describe('strict templates (happy path)', () => {
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beforeEach(() => {
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initMockFileSystem('Native');
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env = LanguageServiceTestEnv.setup();
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project = env.addProject('test', quickInfoSkeleton());
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});
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describe('elements', () => {
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it('should work for native elements', () => {
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expectQuickInfo({
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templateOverride: `<butt¦on></button>`,
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expectedSpanText: '<button></button>',
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expectedDisplayString: '(element) button: HTMLButtonElement'
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});
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});
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it('should work for directives which match native element tags', () => {
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expectQuickInfo({
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templateOverride: `<butt¦on compound custom-button></button>`,
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expectedSpanText: '<button compound custom-button></button>',
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expectedDisplayString: '(directive) AppModule.CompoundCustomButtonDirective'
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});
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});
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});
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describe('templates', () => {
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it('should return undefined for ng-templates', () => {
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const {documentation} = expectQuickInfo({
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templateOverride: `<ng-templ¦ate></ng-template>`,
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expectedSpanText: '<ng-template></ng-template>',
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expectedDisplayString: '(template) ng-template'
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});
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expect(toText(documentation))
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.toContain('The `<ng-template>` is an Angular element for rendering HTML.');
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});
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});
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describe('directives', () => {
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it('should work for directives', () => {
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expectQuickInfo({
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templateOverride: `<div string-model¦></div>`,
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expectedSpanText: 'string-model',
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expectedDisplayString: '(directive) AppModule.StringModel'
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});
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});
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it('should work for components', () => {
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const {documentation} = expectQuickInfo({
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templateOverride: `<t¦est-comp></test-comp>`,
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expectedSpanText: '<test-comp></test-comp>',
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expectedDisplayString: '(component) AppModule.TestComponent'
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});
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expect(toText(documentation)).toBe('This Component provides the `test-comp` selector.');
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});
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it('should work for components with bound attributes', () => {
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const {documentation} = expectQuickInfo({
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templateOverride: `<t¦est-comp [attr.id]="'1' + '2'" [attr.name]="'myName'"></test-comp>`,
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expectedSpanText: `<test-comp [attr.id]="'1' + '2'" [attr.name]="'myName'"></test-comp>`,
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expectedDisplayString: '(component) AppModule.TestComponent'
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});
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expect(toText(documentation)).toBe('This Component provides the `test-comp` selector.');
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});
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it('should work for structural directives', () => {
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const {documentation} = expectQuickInfo({
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templateOverride: `<div *¦ngFor="let item of heroes"></div>`,
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expectedSpanText: 'ngFor',
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expectedDisplayString: '(directive) NgForOf<Hero, Hero[]>'
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});
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expect(toText(documentation)).toContain('A fake version of the NgFor directive.');
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});
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it('should work for directives with compound selectors, some of which are bindings', () => {
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expectQuickInfo({
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templateOverride:
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`<ng-template ngF¦or let-hero [ngForOf]="heroes">{{hero}}</ng-template>`,
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expectedSpanText: 'ngFor',
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expectedDisplayString: '(directive) NgForOf<Hero, Hero[]>'
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});
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});
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it('should work for data-let- syntax', () => {
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expectQuickInfo({
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templateOverride:
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`<ng-template ngFor data-let-he¦ro [ngForOf]="heroes">{{hero}}</ng-template>`,
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expectedSpanText: 'hero',
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expectedDisplayString: '(variable) hero: Hero'
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});
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});
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});
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describe('bindings', () => {
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describe('inputs', () => {
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it('should work for input providers', () => {
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expectQuickInfo({
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templateOverride: `<test-comp [tcN¦ame]="name"></test-comp>`,
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expectedSpanText: 'tcName',
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expectedDisplayString: '(property) TestComponent.name: string'
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});
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});
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it('should work for bind- syntax', () => {
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expectQuickInfo({
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templateOverride: `<test-comp bind-tcN¦ame="name"></test-comp>`,
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expectedSpanText: 'tcName',
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expectedDisplayString: '(property) TestComponent.name: string'
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});
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expectQuickInfo({
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templateOverride: `<test-comp data-bind-tcN¦ame="name"></test-comp>`,
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expectedSpanText: 'tcName',
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expectedDisplayString: '(property) TestComponent.name: string'
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});
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});
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it('should work for structural directive inputs ngForTrackBy', () => {
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expectQuickInfo({
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templateOverride: `<div *ngFor="let item of heroes; tr¦ackBy: trackByFn;"></div>`,
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expectedSpanText: 'trackBy',
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expectedDisplayString:
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'(property) NgForOf<Hero, Hero[]>.ngForTrackBy: TrackByFunction<Hero>'
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});
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});
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it('should work for structural directive inputs ngForOf', () => {
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expectQuickInfo({
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templateOverride: `<div *ngFor="let item o¦f heroes; trackBy: trackByFn;"></div>`,
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expectedSpanText: 'of',
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expectedDisplayString:
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'(property) NgForOf<Hero, Hero[]>.ngForOf: (Hero[] & NgIterable<Hero>) | null | undefined'
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});
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});
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it('should work for two-way binding providers', () => {
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expectQuickInfo({
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templateOverride: `<test-comp string-model [(mo¦del)]="title"></test-comp>`,
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expectedSpanText: 'model',
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expectedDisplayString: '(property) StringModel.model: string'
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});
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});
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});
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describe('outputs', () => {
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it('should work for event providers', () => {
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expectQuickInfo({
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templateOverride: `<test-comp (te¦st)="myClick($event)"></test-comp>`,
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expectedSpanText: 'test',
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expectedDisplayString: '(event) TestComponent.testEvent: EventEmitter<string>'
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});
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});
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it('should work for on- syntax binding', () => {
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expectQuickInfo({
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templateOverride: `<test-comp on-te¦st="myClick($event)"></test-comp>`,
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expectedSpanText: 'test',
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expectedDisplayString: '(event) TestComponent.testEvent: EventEmitter<string>'
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});
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expectQuickInfo({
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templateOverride: `<test-comp data-on-te¦st="myClick($event)"></test-comp>`,
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expectedSpanText: 'test',
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expectedDisplayString: '(event) TestComponent.testEvent: EventEmitter<string>'
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});
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});
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it('should work for $event from EventEmitter', () => {
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expectQuickInfo({
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templateOverride: `<div string-model (modelChange)="myClick($e¦vent)"></div>`,
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expectedSpanText: '$event',
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expectedDisplayString: '(parameter) $event: string'
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});
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});
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it('should work for $event from native element', () => {
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expectQuickInfo({
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templateOverride: `<div (click)="myClick($e¦vent)"></div>`,
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expectedSpanText: '$event',
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expectedDisplayString: '(parameter) $event: MouseEvent'
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});
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});
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});
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});
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describe('references', () => {
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it('should work for element reference declarations', () => {
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const {documentation} = expectQuickInfo({
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templateOverride: `<div #¦chart></div>`,
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expectedSpanText: 'chart',
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expectedDisplayString: '(reference) chart: HTMLDivElement'
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});
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expect(toText(documentation))
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.toEqual(
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'Provides special properties (beyond the regular HTMLElement ' +
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'interface it also has available to it by inheritance) for manipulating <div> elements.');
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});
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it('should work for directive references', () => {
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expectQuickInfo({
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templateOverride: `<div string-model #dir¦Ref="stringModel"></div>`,
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expectedSpanText: 'dirRef',
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expectedDisplayString: '(reference) dirRef: StringModel'
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});
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});
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it('should work for ref- syntax', () => {
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expectQuickInfo({
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templateOverride: `<div ref-ch¦art></div>`,
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expectedSpanText: 'chart',
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expectedDisplayString: '(reference) chart: HTMLDivElement'
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});
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expectQuickInfo({
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templateOverride: `<div data-ref-ch¦art></div>`,
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expectedSpanText: 'chart',
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expectedDisplayString: '(reference) chart: HTMLDivElement'
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});
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});
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it('should work for $event from native element', () => {
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expectQuickInfo({
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templateOverride: `<div (click)="myClick($e¦vent)"></div>`,
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expectedSpanText: '$event',
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expectedDisplayString: '(parameter) $event: MouseEvent'
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});
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});
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it('should work for click output from native element', () => {
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expectQuickInfo({
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templateOverride: `<div (cl¦ick)="myClick($event)"></div>`,
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expectedSpanText: 'click',
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expectedDisplayString:
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'(event) HTMLDivElement.addEventListener<"click">(type: "click", ' +
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'listener: (this: HTMLDivElement, ev: MouseEvent) => any, ' +
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'options?: boolean | AddEventListenerOptions | undefined): void (+1 overload)'
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});
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});
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});
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describe('variables', () => {
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it('should work for array members', () => {
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const {documentation} = expectQuickInfo({
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templateOverride: `<div *ngFor="let hero of heroes">{{her¦o}}</div>`,
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expectedSpanText: 'hero',
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expectedDisplayString: '(variable) hero: Hero'
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});
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expect(toText(documentation)).toEqual('The most heroic being.');
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});
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it('should work for ReadonlyArray members (#36191)', () => {
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expectQuickInfo({
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templateOverride: `<div *ngFor="let hero of readonlyHeroes">{{her¦o}}</div>`,
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expectedSpanText: 'hero',
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expectedDisplayString: '(variable) hero: Readonly<Hero>'
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});
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});
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it('should work for const array members (#36191)', () => {
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expectQuickInfo({
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templateOverride: `<div *ngFor="let name of constNames">{{na¦me}}</div>`,
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expectedSpanText: 'name',
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expectedDisplayString: '(variable) name: { readonly name: "name"; }'
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});
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});
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});
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describe('pipes', () => {
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it('should work for pipes', () => {
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const templateOverride = `<p>The hero's birthday is {{birthday | da¦te: "MM/dd/yy"}}</p>`;
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expectQuickInfo({
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templateOverride,
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expectedSpanText: 'date',
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expectedDisplayString:
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'(pipe) DatePipe.transform(value: string | number | Date, format?: string | undefined, timezone?: ' +
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'string | undefined, locale?: string | undefined): string | null (+2 overloads)'
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});
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});
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});
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describe('expressions', () => {
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it('should find members in a text interpolation', () => {
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expectQuickInfo({
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templateOverride: `<div>{{ tit¦le }}</div>`,
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expectedSpanText: 'title',
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expectedDisplayString: '(property) AppCmp.title: string'
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});
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});
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it('should work for accessed property reads', () => {
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expectQuickInfo({
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templateOverride: `<div>{{title.len¦gth}}</div>`,
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expectedSpanText: 'length',
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expectedDisplayString: '(property) String.length: number'
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});
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});
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it('should find members in an attribute interpolation', () => {
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expectQuickInfo({
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templateOverride: `<div string-model model="{{tit¦le}}"></div>`,
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expectedSpanText: 'title',
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expectedDisplayString: '(property) AppCmp.title: string'
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});
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});
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it('should find members of input binding', () => {
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expectQuickInfo({
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templateOverride: `<test-comp [tcName]="ti¦tle"></test-comp>`,
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expectedSpanText: 'title',
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expectedDisplayString: '(property) AppCmp.title: string'
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});
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});
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it('should find input binding on text attribute', () => {
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expectQuickInfo({
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templateOverride: `<test-comp tcN¦ame="title"></test-comp>`,
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expectedSpanText: 'tcName',
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expectedDisplayString: '(property) TestComponent.name: string'
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});
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});
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it('should find members of event binding', () => {
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expectQuickInfo({
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templateOverride: `<test-comp (test)="ti¦tle=$event"></test-comp>`,
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expectedSpanText: 'title',
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expectedDisplayString: '(property) AppCmp.title: string'
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});
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});
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it('should work for method calls', () => {
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expectQuickInfo({
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templateOverride: `<div (click)="setT¦itle('title')"></div>`,
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expectedSpanText: 'setTitle',
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expectedDisplayString: '(method) AppCmp.setTitle(newTitle: string): void'
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});
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});
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it('should work for accessed properties in writes', () => {
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expectQuickInfo({
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templateOverride: `<div (click)="hero.i¦d = 2"></div>`,
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expectedSpanText: 'id',
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expectedDisplayString: '(property) Hero.id: number'
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});
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});
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it('should work for method call arguments', () => {
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expectQuickInfo({
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templateOverride: `<div (click)="setTitle(hero.nam¦e)"></div>`,
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expectedSpanText: 'name',
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expectedDisplayString: '(property) Hero.name: string'
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});
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});
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it('should find members of two-way binding', () => {
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expectQuickInfo({
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templateOverride: `<input string-model [(model)]="ti¦tle" />`,
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expectedSpanText: 'title',
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expectedDisplayString: '(property) AppCmp.title: string'
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});
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});
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it('should find members in a structural directive', () => {
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expectQuickInfo({
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templateOverride: `<div *ngIf="anyV¦alue"></div>`,
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expectedSpanText: 'anyValue',
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expectedDisplayString: '(property) AppCmp.anyValue: any'
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});
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});
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it('should work for members in structural directives', () => {
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expectQuickInfo({
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templateOverride: `<div *ngFor="let item of her¦oes; trackBy: trackByFn;"></div>`,
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expectedSpanText: 'heroes',
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expectedDisplayString: '(property) AppCmp.heroes: Hero[]'
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});
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});
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it('should work for the $any() cast function', () => {
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expectQuickInfo({
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templateOverride: `<div>{{$an¦y(title)}}</div>`,
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expectedSpanText: '$any',
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expectedDisplayString: '(method) $any: any'
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});
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});
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it('should provide documentation', () => {
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const template = project.openFile('app.html');
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template.contents = `<div>{{title}}</div>`;
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template.moveCursorToText('{{¦title}}');
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const quickInfo = template.getQuickInfoAtPosition();
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const documentation = toText(quickInfo!.documentation);
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expect(documentation).toBe('This is the title of the `AppCmp` Component.');
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});
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});
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});
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describe('generics', () => {
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beforeEach(() => {
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initMockFileSystem('Native');
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env = LanguageServiceTestEnv.setup();
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});
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it('should get quick info for the generic input of a directive that normally requires inlining',
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() => {
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// When compiling normally, we would have to inline the type constructor of `GenericDir`
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// because its generic type parameter references `PrivateInterface`, which is not exported.
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project = env.addProject('test', {
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'app.ts': `
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import {Directive, Component, Input, NgModule} from '@angular/core';
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interface PrivateInterface {}
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@Directive({
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selector: '[dir]'
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})export class GenericDir <T extends PrivateInterface>{
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@Input('input') input: T = null!;
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}
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@Component({
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selector: 'some-cmp',
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templateUrl: './app.html'
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})export class SomeCmp{}
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@NgModule({
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declarations: [GenericDir, SomeCmp],
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})export class AppModule{}
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`,
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'app.html': ``,
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});
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expectQuickInfo({
|
|
templateOverride: `<div dir [inp¦ut]='{value: 42}'></div>`,
|
|
expectedSpanText: 'input',
|
|
expectedDisplayString: '(property) GenericDir<any>.input: any'
|
|
});
|
|
});
|
|
});
|
|
|
|
|
|
describe('non-strict compiler options', () => {
|
|
beforeEach(() => {
|
|
initMockFileSystem('Native');
|
|
env = LanguageServiceTestEnv.setup();
|
|
});
|
|
|
|
it('should find input binding on text attribute when strictAttributeTypes is false', () => {
|
|
project = env.addProject('test', quickInfoSkeleton(), {strictAttributeTypes: false});
|
|
expectQuickInfo({
|
|
templateOverride: `<test-comp tcN¦ame="title"></test-comp>`,
|
|
expectedSpanText: 'tcName',
|
|
expectedDisplayString: '(property) TestComponent.name: string'
|
|
});
|
|
});
|
|
|
|
it('can still get quick info when strictOutputEventTypes is false', () => {
|
|
project = env.addProject('test', quickInfoSkeleton(), {strictOutputEventTypes: false});
|
|
expectQuickInfo({
|
|
templateOverride: `<test-comp (te¦st)="myClick($event)"></test-comp>`,
|
|
expectedSpanText: 'test',
|
|
expectedDisplayString: '(event) TestComponent.testEvent: EventEmitter<string>'
|
|
});
|
|
});
|
|
|
|
it('should work for pipes even if checkTypeOfPipes is false', () => {
|
|
// checkTypeOfPipes is set to false when strict templates is false
|
|
project = env.addProject('test', quickInfoSkeleton(), {strictTemplates: false});
|
|
const templateOverride = `<p>The hero's birthday is {{birthday | da¦te: "MM/dd/yy"}}</p>`;
|
|
expectQuickInfo({
|
|
templateOverride,
|
|
expectedSpanText: 'date',
|
|
expectedDisplayString:
|
|
'(pipe) DatePipe.transform(value: string | number | Date, format?: string | undefined, timezone?: ' +
|
|
'string | undefined, locale?: string | undefined): string | null (+2 overloads)'
|
|
});
|
|
});
|
|
|
|
it('should still get quick info if there is an invalid css resource', () => {
|
|
project = env.addProject('test', {
|
|
'app.ts': `
|
|
import {Component, NgModule} from '@angular/core';
|
|
|
|
@Component({
|
|
selector: 'some-cmp',
|
|
templateUrl: './app.html',
|
|
styleUrls: ['./does_not_exist'],
|
|
})
|
|
export class SomeCmp {
|
|
myValue!: string;
|
|
}
|
|
|
|
@NgModule({
|
|
declarations: [SomeCmp],
|
|
})
|
|
export class AppModule{
|
|
}
|
|
`,
|
|
'app.html': `{{myValue}}`,
|
|
});
|
|
const diagnostics = project.getDiagnosticsForFile('app.ts');
|
|
expect(diagnostics.length).toBe(1);
|
|
expect(diagnostics[0].messageText)
|
|
.toEqual(`Could not find stylesheet file './does_not_exist'.`);
|
|
|
|
const template = project.openFile('app.html');
|
|
template.moveCursorToText('{{myVa¦lue}}');
|
|
const quickInfo = template.getQuickInfoAtPosition();
|
|
expect(toText(quickInfo!.displayParts)).toEqual('(property) SomeCmp.myValue: string');
|
|
});
|
|
});
|
|
|
|
function expectQuickInfo(
|
|
{templateOverride, expectedSpanText, expectedDisplayString}:
|
|
{templateOverride: string, expectedSpanText: string, expectedDisplayString: string}):
|
|
ts.QuickInfo {
|
|
const text = templateOverride.replace('¦', '');
|
|
const template = project.openFile('app.html');
|
|
template.contents = text;
|
|
env.expectNoSourceDiagnostics();
|
|
|
|
template.moveCursorToText(templateOverride);
|
|
const quickInfo = template.getQuickInfoAtPosition();
|
|
expect(quickInfo).toBeTruthy();
|
|
const {textSpan, displayParts} = quickInfo!;
|
|
expect(text.substring(textSpan.start, textSpan.start + textSpan.length))
|
|
.toEqual(expectedSpanText);
|
|
expect(toText(displayParts)).toEqual(expectedDisplayString);
|
|
return quickInfo!;
|
|
}
|
|
});
|
|
|
|
function toText(displayParts?: ts.SymbolDisplayPart[]): string {
|
|
return (displayParts || []).map(p => p.text).join('');
|
|
}
|