/** * @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 {NgtscTestEnvironment} from './env'; describe('ngtsc behavioral tests', () => { if (!NgtscTestEnvironment.supported) { // These tests should be excluded from the non-Bazel build. return; } let env !: NgtscTestEnvironment; beforeEach(() => { env = NgtscTestEnvironment.setup(); }); it('should compile Injectables without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Injectable} from '@angular/core'; @Injectable() export class Dep {} @Injectable() export class Service { constructor(dep: Dep) {} } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('Dep.ngInjectableDef ='); expect(jsContents).toContain('Service.ngInjectableDef ='); expect(jsContents).not.toContain('__decorate'); const dtsContents = env.getContents('test.d.ts'); expect(dtsContents).toContain('static ngInjectableDef: i0.ɵInjectableDef;'); expect(dtsContents).toContain('static ngInjectableDef: i0.ɵInjectableDef;'); }); it('should compile Components without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Component} from '@angular/core'; @Component({ selector: 'test-cmp', template: 'this is a test', }) export class TestCmp {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('TestCmp.ngComponentDef = i0.ɵdefineComponent'); expect(jsContents).not.toContain('__decorate'); const dtsContents = env.getContents('test.d.ts'); expect(dtsContents) .toContain( 'static ngComponentDef: i0.ɵComponentDefWithMeta'); }); it('should compile Components without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Component} from '@angular/core'; @Component({ selector: 'test-cmp', templateUrl: './dir/test.html', }) export class TestCmp {} `); env.write('dir/test.html', '

Hello World

'); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('Hello World'); }); it('should compile NgModules without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Component, NgModule} from '@angular/core'; @Component({ selector: 'test-cmp', template: 'this is a test', }) export class TestCmp {} @NgModule({ declarations: [TestCmp], bootstrap: [TestCmp], }) export class TestModule {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents) .toContain( 'i0.ɵdefineNgModule({ type: TestModule, bootstrap: [TestCmp], ' + 'declarations: [TestCmp], imports: [], exports: [] })'); const dtsContents = env.getContents('test.d.ts'); expect(dtsContents) .toContain( 'static ngComponentDef: i0.ɵComponentDefWithMeta'); expect(dtsContents) .toContain( 'static ngModuleDef: i0.ɵNgModuleDefWithMeta'); expect(dtsContents).not.toContain('__decorate'); }); it('should compile NgModules with services without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Component, NgModule} from '@angular/core'; export class Token {} @NgModule({}) export class OtherModule {} @Component({ selector: 'test-cmp', template: 'this is a test', }) export class TestCmp {} @NgModule({ declarations: [TestCmp], providers: [{provide: Token, useValue: 'test'}], imports: [OtherModule], }) export class TestModule {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('i0.ɵdefineNgModule({ type: TestModule,'); expect(jsContents) .toContain( `TestModule.ngInjectorDef = i0.defineInjector({ factory: ` + `function TestModule_Factory(t) { return new (t || TestModule)(); }, providers: [{ provide: ` + `Token, useValue: 'test' }], imports: [[OtherModule]] });`); const dtsContents = env.getContents('test.d.ts'); expect(dtsContents) .toContain( 'static ngModuleDef: i0.ɵNgModuleDefWithMeta'); expect(dtsContents).toContain('static ngInjectorDef: i0.ɵInjectorDef'); }); it('should compile NgModules with references to local components', () => { env.tsconfig(); env.write('test.ts', ` import {NgModule} from '@angular/core'; import {Foo} from './foo'; @NgModule({ declarations: [Foo], }) export class FooModule {} `); env.write('foo.ts', ` import {Component} from '@angular/core'; @Component({selector: 'foo', template: ''}) export class Foo {} `); env.driveMain(); const jsContents = env.getContents('test.js'); const dtsContents = env.getContents('test.d.ts'); expect(jsContents).toContain('import { Foo } from \'./foo\';'); expect(jsContents).not.toMatch(/as i[0-9] from '.\/foo'/); expect(dtsContents).toContain('as i1 from \'./foo\';'); }); it('should compile NgModules with references to absolute components', () => { env.tsconfig(); env.write('test.ts', ` import {NgModule} from '@angular/core'; import {Foo} from 'foo'; @NgModule({ declarations: [Foo], }) export class FooModule {} `); env.write('node_modules/foo/index.d.ts', ` import * as i0 from '@angular/core'; export class Foo { static ngComponentDef: i0.ɵComponentDef; } `); env.driveMain(); const jsContents = env.getContents('test.js'); const dtsContents = env.getContents('test.d.ts'); expect(jsContents).toContain('import { Foo } from \'foo\';'); expect(jsContents).not.toMatch(/as i[0-9] from 'foo'/); expect(dtsContents).toContain('as i1 from \'foo\';'); }); it('should compile Pipes without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Pipe} from '@angular/core'; @Pipe({ name: 'test-pipe', pure: false, }) export class TestPipe {} `); env.driveMain(); const jsContents = env.getContents('test.js'); const dtsContents = env.getContents('test.d.ts'); expect(jsContents) .toContain( 'TestPipe.ngPipeDef = i0.ɵdefinePipe({ name: "test-pipe", type: TestPipe, ' + 'factory: function TestPipe_Factory(t) { return new (t || TestPipe)(); }, pure: false })'); expect(dtsContents) .toContain('static ngPipeDef: i0.ɵPipeDefWithMeta;'); }); it('should compile pure Pipes without errors', () => { env.tsconfig(); env.write('test.ts', ` import {Pipe} from '@angular/core'; @Pipe({ name: 'test-pipe', }) export class TestPipe {} `); env.driveMain(); const jsContents = env.getContents('test.js'); const dtsContents = env.getContents('test.d.ts'); expect(jsContents) .toContain( 'TestPipe.ngPipeDef = i0.ɵdefinePipe({ name: "test-pipe", type: TestPipe, ' + 'factory: function TestPipe_Factory(t) { return new (t || TestPipe)(); }, pure: true })'); expect(dtsContents) .toContain('static ngPipeDef: i0.ɵPipeDefWithMeta;'); }); it('should compile Pipes with dependencies', () => { env.tsconfig(); env.write('test.ts', ` import {Pipe} from '@angular/core'; export class Dep {} @Pipe({ name: 'test-pipe', pure: false, }) export class TestPipe { constructor(dep: Dep) {} } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('return new (t || TestPipe)(i0.ɵdirectiveInject(Dep));'); }); it('should include @Pipes in @NgModule scopes', () => { env.tsconfig(); env.write('test.ts', ` import {Component, NgModule, Pipe} from '@angular/core'; @Pipe({name: 'test'}) export class TestPipe {} @Component({selector: 'test-cmp', template: '{{value | test}}'}) export class TestCmp {} @NgModule({declarations: [TestPipe, TestCmp]}) export class TestModule {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('pipes: [TestPipe]'); const dtsContents = env.getContents('test.d.ts'); expect(dtsContents) .toContain( 'i0.ɵNgModuleDefWithMeta'); }); it('should unwrap a ModuleWithProviders function if a generic type is provided for it', () => { env.tsconfig(); env.write(`test.ts`, ` import {NgModule} from '@angular/core'; import {RouterModule} from 'router'; @NgModule({imports: [RouterModule.forRoot()]}) export class TestModule {} `); env.write('node_modules/router/index.d.ts', ` import {ModuleWithProviders} from '@angular/core'; declare class RouterModule { static forRoot(): ModuleWithProviders; } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('imports: [[RouterModule.forRoot()]]'); const dtsContents = env.getContents('test.d.ts'); expect(dtsContents).toContain(`import * as i1 from 'router';`); expect(dtsContents) .toContain('i0.ɵNgModuleDefWithMeta'); }); it('should inject special types according to the metadata', () => { env.tsconfig(); env.write(`test.ts`, ` import { Attribute, ChangeDetectorRef, Component, ElementRef, Injector, Renderer2, TemplateRef, ViewContainerRef, } from '@angular/core'; @Component({ selector: 'test', template: 'Test', }) class FooCmp { constructor( @Attribute("test") attr: string, cdr: ChangeDetectorRef, er: ElementRef, i: Injector, r2: Renderer2, tr: TemplateRef, vcr: ViewContainerRef, ) {} } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents) .toContain( `factory: function FooCmp_Factory(t) { return new (t || FooCmp)(i0.ɵinjectAttribute("test"), i0.ɵdirectiveInject(ChangeDetectorRef), i0.ɵdirectiveInject(ElementRef), i0.ɵdirectiveInject(Injector), i0.ɵdirectiveInject(Renderer2), i0.ɵdirectiveInject(TemplateRef), i0.ɵdirectiveInject(ViewContainerRef)); }`); }); it('should generate queries for components', () => { // Helper functions to construct RegExps for output validation const varRegExp = (name: string): RegExp => new RegExp(`var \\w+ = \\[\"${name}\"\\];`); const queryRegExp = (id: number | null, descend: boolean, ref?: string): RegExp => { const maybeRef = ref ? `, ${ref}` : ``; return new RegExp(`i0\\.ɵquery\\(${id}, \\w+, ${descend}${maybeRef}\\)`); }; env.tsconfig(); env.write(`test.ts`, ` import {Component, ContentChild, ContentChildren, TemplateRef, ViewChild} from '@angular/core'; @Component({ selector: 'test', template: '
', queries: { 'mview': new ViewChild('test1'), 'mcontent': new ContentChild('test2'), } }) class FooCmp { @ContentChild('bar', {read: TemplateRef}) child: any; @ContentChildren(TemplateRef) children: any; get aview(): any { return null; } @ViewChild('accessor') set aview(value: any) {} } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toMatch(varRegExp('bar')); expect(jsContents).toMatch(varRegExp('test1')); expect(jsContents).toMatch(varRegExp('test2')); expect(jsContents).toMatch(varRegExp('accessor')); expect(jsContents).toContain(`i0.ɵquery(null, TemplateRef, false)`); expect(jsContents) .toMatch(queryRegExp( null, true, 'TemplateRef')); // match `i0.ɵquery(null, _c0, true, TemplateRef)` expect(jsContents).toMatch(queryRegExp(null, true)); // match `i0.ɵquery(null, _c0, true)` expect(jsContents).toMatch(queryRegExp(0, true)); // match `i0.ɵquery(0, _c0, true)` expect(jsContents).toMatch(queryRegExp(1, true)); // match `i0.ɵquery(1, _c0, true)` }); it('should handle queries that use forwardRef', () => { env.tsconfig(); env.write(`test.ts`, ` import {Component, ContentChild, TemplateRef, ViewContainerRef, forwardRef} from '@angular/core'; @Component({ selector: 'test', template: '
', }) class FooCmp { @ContentChild(forwardRef(() => TemplateRef)) child: any; @ContentChild(forwardRef(function() { return ViewContainerRef; })) child2: any; } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain(`i0.ɵquery(null, TemplateRef, true)`); expect(jsContents).toContain(`i0.ɵquery(null, ViewContainerRef, true)`); }); it('should generate host bindings for directives', () => { env.tsconfig(); env.write(`test.ts`, ` import {Component, HostBinding, HostListener, TemplateRef} from '@angular/core'; @Component({ selector: 'test', template: 'Test', host: { '[attr.hello]': 'foo', '(click)': 'onClick($event)', '[prop]': 'bar', }, }) class FooCmp { onClick(event: any): void {} @HostBinding('class.someclass') get someClass(): boolean { return false; } @HostListener('change', ['arg1', 'arg2', 'arg3']) onChange(event: any, arg: any): void {} } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents) .toContain(`i0.ɵelementProperty(elIndex, "attr.hello", i0.ɵbind(i0.ɵload(dirIndex).foo));`); expect(jsContents) .toContain(`i0.ɵelementProperty(elIndex, "prop", i0.ɵbind(i0.ɵload(dirIndex).bar));`); expect(jsContents) .toContain( 'i0.ɵelementProperty(elIndex, "class.someclass", i0.ɵbind(i0.ɵload(dirIndex).someClass))'); const factoryDef = ` factory: function FooCmp_Factory(t) { var f = new (t || FooCmp)(); i0.ɵlistener("click", function FooCmp_click_HostBindingHandler($event) { return f.onClick($event); }); i0.ɵlistener("change", function FooCmp_change_HostBindingHandler($event) { return f.onChange(f.arg1, f.arg2, f.arg3); }); return f; } `; expect(jsContents).toContain(factoryDef.replace(/\s+/g, ' ').trim()); }); it('should generate host listeners for directives with base factories', () => { env.tsconfig(); env.write(`test.ts`, ` import {Directive, HostListener} from '@angular/core'; class Base {} @Directive({ selector: '[test]', }) class Dir extends Base { @HostListener('change', ['arg']) onChange(event: any, arg: any): void {} } `); env.driveMain(); const jsContents = env.getContents('test.js'); const factoryDef = ` factory: function Dir_Factory(t) { var f = ɵDir_BaseFactory((t || Dir)); i0.ɵlistener("change", function Dir_change_HostBindingHandler($event) { return f.onChange(f.arg); }); return f; } `; expect(jsContents).toContain(factoryDef.replace(/\s+/g, ' ').trim()); expect(jsContents).toContain('var ɵDir_BaseFactory = i0.ɵgetInheritedFactory(Dir)'); }); it('should correctly recognize local symbols', () => { env.tsconfig(); env.write('module.ts', ` import {NgModule} from '@angular/core'; import {Dir, Comp} from './test'; @NgModule({ declarations: [Dir, Comp], exports: [Dir, Comp], }) class Module {} `); env.write(`test.ts`, ` import {Component, Directive} from '@angular/core'; @Directive({ selector: '[dir]', }) export class Dir {} @Component({ selector: 'test', template: '
Test
', }) export class Comp {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).not.toMatch(/import \* as i[0-9] from ['"].\/test['"]/); }); it('should generate exportAs declarations', () => { env.tsconfig(); env.write('test.ts', ` import {Component, Directive} from '@angular/core'; @Directive({ selector: '[test]', exportAs: 'foo', }) class Dir {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain(`exportAs: "foo"`); }); it('should generate correct factory stubs for a test module', () => { env.tsconfig({'allowEmptyCodegenFiles': true}); env.write('test.ts', ` import {Injectable, NgModule} from '@angular/core'; @Injectable() export class NotAModule {} @NgModule({}) export class TestModule {} `); env.write('empty.ts', ` import {Injectable} from '@angular/core'; @Injectable() export class NotAModule {} `); env.driveMain(); const factoryContents = env.getContents('test.ngfactory.js'); expect(factoryContents).toContain(`import * as i0 from '@angular/core';`); expect(factoryContents).toContain(`import { NotAModule, TestModule } from './test';`); expect(factoryContents) .toContain(`export var TestModuleNgFactory = new i0.ɵNgModuleFactory(TestModule);`); expect(factoryContents).not.toContain(`NotAModuleNgFactory`); expect(factoryContents).not.toContain('ɵNonEmptyModule'); const emptyFactory = env.getContents('empty.ngfactory.js'); expect(emptyFactory).toContain(`import * as i0 from '@angular/core';`); expect(emptyFactory).toContain(`export var ɵNonEmptyModule = true;`); }); it('should generate a summary stub for decorated classes in the input file only', () => { env.tsconfig({'allowEmptyCodegenFiles': true}); env.write('test.ts', ` import {Injectable, NgModule} from '@angular/core'; export class NotAModule {} @NgModule({}) export class TestModule {} `); env.driveMain(); const summaryContents = env.getContents('test.ngsummary.js'); expect(summaryContents).toEqual(`export var TestModuleNgSummary = null;\n`); }); it('it should generate empty export when there are no other summary symbols, to ensure the output is a valid ES module', () => { env.tsconfig({'allowEmptyCodegenFiles': true}); env.write('empty.ts', ` export class NotAModule {} `); env.driveMain(); const emptySummary = env.getContents('empty.ngsummary.js'); // The empty export ensures this js file is still an ES module. expect(emptySummary).toEqual(`export var ɵempty = null;\n`); }); it('should compile a banana-in-a-box inside of a template', () => { env.tsconfig(); env.write('test.ts', ` import {Component} from '@angular/core'; @Component({ template: '
', selector: 'test' }) class TestCmp {} `); env.driveMain(); }); it('generates inherited factory definitions', () => { env.tsconfig(); env.write(`test.ts`, ` import {Injectable} from '@angular/core'; class Dep {} @Injectable() class Base { constructor(dep: Dep) {} } @Injectable() class Child extends Base {} @Injectable() class GrandChild extends Child { constructor() { super(null!); } } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents) .toContain('function Base_Factory(t) { return new (t || Base)(i0.inject(Dep)); }'); expect(jsContents).toContain('var ɵChild_BaseFactory = i0.ɵgetInheritedFactory(Child)'); expect(jsContents) .toContain('function Child_Factory(t) { return ɵChild_BaseFactory((t || Child)); }'); expect(jsContents) .toContain('function GrandChild_Factory(t) { return new (t || GrandChild)(); }'); }); it('generates base factories for directives', () => { env.tsconfig(); env.write(`test.ts`, ` import {Directive} from '@angular/core'; class Base {} @Directive({ selector: '[test]', }) class Dir extends Base { } `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('var ɵDir_BaseFactory = i0.ɵgetInheritedFactory(Dir)'); }); it('should wrap "directives" in component metadata in a closure when forward references are present', () => { env.tsconfig(); env.write('test.ts', ` import {Component, NgModule} from '@angular/core'; @Component({ selector: 'cmp-a', template: '', }) class CmpA {} @Component({ selector: 'cmp-b', template: 'This is B', }) class CmpB {} @NgModule({ declarations: [CmpA, CmpB], }) class Module {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('directives: function () { return [CmpB]; }'); }); it('should emit setClassMetadata calls for all types', () => { env.tsconfig(); env.write('test.ts', ` import {Component, Directive, Injectable, NgModule, Pipe} from '@angular/core'; @Component({selector: 'cmp', template: 'I am a component!'}) class TestComponent {} @Directive({selector: 'dir'}) class TestDirective {} @Injectable() class TestInjectable {} @NgModule({declarations: [TestComponent, TestDirective]}) class TestNgModule {} @Pipe({name: 'pipe'}) class TestPipe {} `); env.driveMain(); const jsContents = env.getContents('test.js'); expect(jsContents).toContain('ɵsetClassMetadata(TestComponent, '); expect(jsContents).toContain('ɵsetClassMetadata(TestDirective, '); expect(jsContents).toContain('ɵsetClassMetadata(TestInjectable, '); expect(jsContents).toContain('ɵsetClassMetadata(TestNgModule, '); expect(jsContents).toContain('ɵsetClassMetadata(TestPipe, '); }); });