429 lines
15 KiB
TypeScript
429 lines
15 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {AotCompiler, AotCompilerHost, AotCompilerOptions, GeneratedFile, createAotCompiler} from '@angular/compiler';
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import {RenderComponentType, ɵReflectionCapabilities as ReflectionCapabilities, ɵreflector as reflector} from '@angular/core';
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import {async, fakeAsync, tick} from '@angular/core/testing';
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import {MetadataBundler, MetadataCollector, ModuleMetadata, privateEntriesToIndex} from '@angular/tsc-wrapped';
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import * as ts from 'typescript';
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import {extractSourceMap, originalPositionFor} from '../output/source_map_util';
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import {EmittingCompilerHost, MockAotCompilerHost, MockCompilerHost, MockData, MockDirectory, MockMetadataBundlerHost, settings} from './test_util';
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const DTS = /\.d\.ts$/;
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const minCoreIndex = `
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export * from './src/application_module';
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export * from './src/change_detection';
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export * from './src/metadata';
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export * from './src/di/metadata';
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export * from './src/di/injector';
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export * from './src/di/injection_token';
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export * from './src/linker';
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export * from './src/render';
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export * from './src/codegen_private_exports';
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`;
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describe('compiler (unbundled Angular)', () => {
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let angularFiles: Map<string, string>;
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beforeAll(() => {
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const emittingHost = new EmittingCompilerHost([], {emitMetadata: true});
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emittingHost.addScript('@angular/core/index.ts', minCoreIndex);
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const emittingProgram = ts.createProgram(emittingHost.scripts, settings, emittingHost);
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emittingProgram.emit();
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angularFiles = emittingHost.written;
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});
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// Restore reflector since AoT compiler will update it with a new static reflector
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afterEach(() => { reflector.updateCapabilities(new ReflectionCapabilities()); });
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describe('Quickstart', () => {
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let host: MockCompilerHost;
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let aotHost: MockAotCompilerHost;
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beforeEach(() => {
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host = new MockCompilerHost(QUICKSTART, FILES, angularFiles);
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aotHost = new MockAotCompilerHost(host);
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});
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it('should compile',
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async(() => compile(host, aotHost, expectNoDiagnostics).then(generatedFiles => {
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expect(generatedFiles.find(f => /app\.component\.ngfactory\.ts/.test(f.genFileUrl)))
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.toBeDefined();
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expect(generatedFiles.find(f => /app\.module\.ngfactory\.ts/.test(f.genFileUrl)))
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.toBeDefined();
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})));
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it('should compile using summaries',
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async(() => summaryCompile(host, aotHost).then(generatedFiles => {
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expect(generatedFiles.find(f => /app\.component\.ngfactory\.ts/.test(f.genFileUrl)))
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.toBeDefined();
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expect(generatedFiles.find(f => /app\.module\.ngfactory\.ts/.test(f.genFileUrl)))
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.toBeDefined();
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})));
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});
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describe('aot source mapping', () => {
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const componentPath = '/app/app.component.ts';
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let rootDir: MockDirectory;
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let appDir: MockDirectory;
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beforeEach(() => {
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appDir = {
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'app.module.ts': `
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import { NgModule } from '@angular/core';
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import { AppComponent } from './app.component';
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@NgModule({
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declarations: [ AppComponent ],
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bootstrap: [ AppComponent ]
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})
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export class AppModule { }
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`
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};
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rootDir = {'app': appDir};
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});
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function compileApp(): GeneratedFile {
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const host = new MockCompilerHost(['/app/app.module.ts'], rootDir, angularFiles);
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const aotHost = new MockAotCompilerHost(host);
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let result: GeneratedFile[];
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let error: Error;
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compile(host, aotHost, expectNoDiagnostics, expectNoDiagnostics)
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.then((files) => result = files, (err) => error = err);
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tick();
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if (error) {
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throw error;
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}
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return result.find(genFile => genFile.srcFileUrl === componentPath);
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;
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}
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function findLineAndColumn(file: string, token: string): {line: number, column: number} {
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const index = file.indexOf(token);
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if (index === -1) {
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return {line: null, column: null};
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}
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const linesUntilToken = file.slice(0, index).split('\n');
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const line = linesUntilToken.length;
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const column = linesUntilToken[linesUntilToken.length - 1].length;
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return {line, column};
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}
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function createComponentSource(componentDecorator: string) {
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return `
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import { NgModule, Component } from '@angular/core';
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@Component({
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${componentDecorator}
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})
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export class AppComponent {
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someMethod() {}
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}
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`;
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}
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describe('inline templates', () => {
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const templateUrl = componentPath;
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function templateDecorator(template: string) { return `template: \`${template}\`,`; }
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declareTests({templateUrl, templateDecorator});
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});
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describe('external templates', () => {
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const templateUrl = '/app/app.component.html';
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function templateDecorator(template: string) {
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appDir['app.component.html'] = template;
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return `templateUrl: 'app.component.html',`;
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}
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declareTests({templateUrl, templateDecorator});
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});
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function declareTests(
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{templateUrl, templateDecorator}:
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{templateUrl: string, templateDecorator: (template: string) => string}) {
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it('should use the right source url in html parse errors', fakeAsync(() => {
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appDir['app.component.ts'] =
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createComponentSource(templateDecorator('<div>\n </error>'));
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expect(() => compileApp())
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.toThrowError(new RegExp(`Template parse errors[\\s\\S]*${templateUrl}@1:2`));
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}));
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it('should use the right source url in template parse errors', fakeAsync(() => {
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appDir['app.component.ts'] = createComponentSource(
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templateDecorator('<div>\n <div unknown="{{ctxProp}}"></div>'));
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expect(() => compileApp())
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.toThrowError(new RegExp(`Template parse errors[\\s\\S]*${templateUrl}@1:7`));
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}));
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it('should create a sourceMap for the template', fakeAsync(() => {
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const template = 'Hello World!';
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appDir['app.component.ts'] = createComponentSource(templateDecorator(template));
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const genFile = compileApp();
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const sourceMap = extractSourceMap(genFile.source);
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expect(sourceMap.file).toEqual(genFile.genFileUrl);
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// the generated file contains the host view and the component view.
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// we are only interested in the component view.
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const sourceIndex = sourceMap.sources.indexOf(templateUrl);
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expect(sourceMap.sourcesContent[sourceIndex]).toEqual(template);
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}));
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it('should map elements correctly to the source', fakeAsync(() => {
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const template = '<div>\n <span></span></div>';
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appDir['app.component.ts'] = createComponentSource(templateDecorator(template));
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const genFile = compileApp();
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const sourceMap = extractSourceMap(genFile.source);
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expect(originalPositionFor(sourceMap, findLineAndColumn(genFile.source, `'span'`)))
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.toEqual({line: 2, column: 3, source: templateUrl});
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}));
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it('should map bindings correctly to the source', fakeAsync(() => {
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const template = `<div>\n <span [title]="someMethod()"></span></div>`;
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appDir['app.component.ts'] = createComponentSource(templateDecorator(template));
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const genFile = compileApp();
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const sourceMap = extractSourceMap(genFile.source);
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expect(originalPositionFor(sourceMap, findLineAndColumn(genFile.source, `someMethod()`)))
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.toEqual({line: 2, column: 9, source: templateUrl});
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}));
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it('should map events correctly to the source', fakeAsync(() => {
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const template = `<div>\n <span (click)="someMethod()"></span></div>`;
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appDir['app.component.ts'] = createComponentSource(templateDecorator(template));
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const genFile = compileApp();
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const sourceMap = extractSourceMap(genFile.source);
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expect(originalPositionFor(sourceMap, findLineAndColumn(genFile.source, `someMethod()`)))
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.toEqual({line: 2, column: 9, source: templateUrl});
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}));
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}
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});
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describe('errors', () => {
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it('should only warn if not all arguments of an @Injectable class can be resolved',
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fakeAsync(() => {
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const FILES: MockData = {
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app: {
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'app.ts': `
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import {Injectable} from '@angular/core';
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@Injectable()
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export class MyService {
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constructor(a: boolean) {}
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}
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`
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}
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};
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const host = new MockCompilerHost(['/app/app.ts'], FILES, angularFiles);
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const aotHost = new MockAotCompilerHost(host);
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let ok = false;
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const warnSpy = spyOn(console, 'warn');
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compile(host, aotHost, expectNoDiagnostics).then(() => ok = true);
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tick();
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expect(ok).toBe(true);
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expect(warnSpy).toHaveBeenCalledWith(
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`Warning: Can't resolve all parameters for MyService in /app/app.ts: (?). This will become an error in Angular v5.x`);
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}));
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});
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});
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describe('compiler (bundled Angular)', () => {
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let angularFiles: Map<string, string>;
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beforeAll(() => {
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const emittingHost = new EmittingCompilerHost(['@angular/core/index'], {emitMetadata: false});
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// Create the metadata bundled
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const indexModule = emittingHost.effectiveName('@angular/core/index');
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const bundler = new MetadataBundler(
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indexModule, '@angular/core', new MockMetadataBundlerHost(emittingHost));
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const bundle = bundler.getMetadataBundle();
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const metadata = JSON.stringify(bundle.metadata, null, ' ');
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const bundleIndexSource = privateEntriesToIndex('./index', bundle.privates);
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emittingHost.override('@angular/core/bundle_index.ts', bundleIndexSource);
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emittingHost.addWrittenFile(
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'@angular/core/package.json', JSON.stringify({typings: 'bundle_index.d.ts'}));
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emittingHost.addWrittenFile('@angular/core/bundle_index.metadata.json', metadata);
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// Emit the sources
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const bundleIndexName = emittingHost.effectiveName('@angular/core/bundle_index.ts');
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const emittingProgram = ts.createProgram([bundleIndexName], settings, emittingHost);
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emittingProgram.emit();
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angularFiles = emittingHost.written;
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});
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describe('Quickstart', () => {
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let host: MockCompilerHost;
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let aotHost: MockAotCompilerHost;
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beforeEach(() => {
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host = new MockCompilerHost(QUICKSTART, FILES, angularFiles);
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aotHost = new MockAotCompilerHost(host);
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});
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// Restore reflector since AoT compiler will update it with a new static reflector
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afterEach(() => { reflector.updateCapabilities(new ReflectionCapabilities()); });
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it('should compile',
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async(() => compile(host, aotHost, expectNoDiagnostics).then(generatedFiles => {
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expect(generatedFiles.find(f => /app\.component\.ngfactory\.ts/.test(f.genFileUrl)))
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.toBeDefined();
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expect(generatedFiles.find(f => /app\.module\.ngfactory\.ts/.test(f.genFileUrl)))
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.toBeDefined();
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})));
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});
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});
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function expectNoDiagnostics(program: ts.Program) {
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function fileInfo(diagnostic: ts.Diagnostic): string {
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if (diagnostic.file) {
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return `${diagnostic.file.fileName}(${diagnostic.start}): `;
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}
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return '';
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}
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function chars(len: number, ch: string): string { return new Array(len).fill(ch).join(''); }
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function lineNoOf(offset: number, text: string): number {
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let result = 1;
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for (let i = 0; i < offset; i++) {
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if (text[i] == '\n') result++;
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}
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return result;
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}
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function lineInfo(diagnostic: ts.Diagnostic): string {
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if (diagnostic.file) {
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const start = diagnostic.start;
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let end = diagnostic.start + diagnostic.length;
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const source = diagnostic.file.text;
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let lineStart = start;
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let lineEnd = end;
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while (lineStart > 0 && source[lineStart] != '\n') lineStart--;
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if (lineStart < start) lineStart++;
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while (lineEnd < source.length && source[lineEnd] != '\n') lineEnd++;
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let line = source.substring(lineStart, lineEnd);
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const lineIndex = line.indexOf('/n');
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if (lineIndex > 0) {
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line = line.substr(0, lineIndex);
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end = start + lineIndex;
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}
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const lineNo = lineNoOf(start, source) + ': ';
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return '\n' + lineNo + line + '\n' + chars(start - lineStart + lineNo.length, ' ') +
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chars(end - start, '^');
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}
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return '';
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}
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function expectNoDiagnostics(diagnostics: ts.Diagnostic[]) {
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if (diagnostics && diagnostics.length) {
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throw new Error(
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'Errors from TypeScript:\n' +
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diagnostics.map(d => `${fileInfo(d)}${d.messageText}${lineInfo(d)}`).join(' \n'));
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}
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}
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expectNoDiagnostics(program.getOptionsDiagnostics());
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expectNoDiagnostics(program.getSyntacticDiagnostics());
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expectNoDiagnostics(program.getSemanticDiagnostics());
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}
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function isDTS(fileName: string): boolean {
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return /\.d\.ts$/.test(fileName);
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}
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function isSource(fileName: string): boolean {
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return /\.ts$/.test(fileName);
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}
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function isFactory(fileName: string): boolean {
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return /\.ngfactory\./.test(fileName);
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}
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function summaryCompile(
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host: MockCompilerHost, aotHost: MockAotCompilerHost,
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preCompile?: (program: ts.Program) => void) {
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// First compile the program to generate the summary files.
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return compile(host, aotHost).then(generatedFiles => {
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// Remove generated files that were not generated from a DTS file
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host.remove(generatedFiles.filter(f => !isDTS(f.srcFileUrl)).map(f => f.genFileUrl));
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// Next compile the program shrowding metadata and only treating .ts files as source.
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aotHost.hideMetadata();
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aotHost.tsFilesOnly();
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return compile(host, aotHost);
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});
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}
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function compile(
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host: MockCompilerHost, aotHost: AotCompilerHost, preCompile?: (program: ts.Program) => void,
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postCompile: (program: ts.Program) => void = expectNoDiagnostics,
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options: AotCompilerOptions = {}) {
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const scripts = host.scriptNames.slice(0);
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const program = ts.createProgram(scripts, settings, host);
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if (preCompile) preCompile(program);
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const {compiler, reflector} = createAotCompiler(aotHost, options);
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return compiler.compileAll(program.getSourceFiles().map(sf => sf.fileName))
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.then(generatedFiles => {
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generatedFiles.forEach(
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file => isSource(file.genFileUrl) ? host.addScript(file.genFileUrl, file.source) :
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host.override(file.genFileUrl, file.source));
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const scripts = host.scriptNames.slice(0);
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const newProgram = ts.createProgram(scripts, settings, host);
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if (postCompile) postCompile(newProgram);
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return generatedFiles;
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});
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}
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const QUICKSTART = ['/quickstart/app/app.module.ts'];
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const FILES: MockData = {
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quickstart: {
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app: {
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'app.component.ts': `
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import {Component} from '@angular/core';
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@Component({
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template: '<h1>Hello {{name}}</h1>'
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})
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export class AppComponent {
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name = 'Angular';
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}
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`,
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'app.module.ts': `
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import { NgModule } from '@angular/core';
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import { AppComponent } from './app.component';
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@NgModule({
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declarations: [ AppComponent ],
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bootstrap: [ AppComponent ]
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})
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export class AppModule { }
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`
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}
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}
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};
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