/** * @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 {inspect} from 'util'; import {runInEachFileSystem} from '../../src/ngtsc/file_system/testing'; import {tsSourceMapBug29300Fixed} from '../../src/ngtsc/util/src/ts_source_map_bug_29300'; import {loadStandardTestFiles} from '../helpers/src/mock_file_loading'; import {NgtscTestEnvironment} from './env'; import {SegmentMapping, getMappedSegments} from './sourcemap_utils'; const testFiles = loadStandardTestFiles(); runInEachFileSystem((os) => { describe('template source-mapping', () => { let env !: NgtscTestEnvironment; beforeEach(() => { env = NgtscTestEnvironment.setup(testFiles); env.tsconfig(); }); describe('Inline templates', () => { describe('(element creation)', () => { it('should map simple element with content', () => { const mappings = compileAndMap('

Heading 1

'); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementStart(0, "h1")', sourceUrl: '../test.ts'}); expect(mappings).toContain({ source: 'Heading 1', generated: 'i0.ɵɵtext(1, "Heading 1")', sourceUrl: '../test.ts' }); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map void element', () => { const mappings = compileAndMap('
'); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelement(0, "hr")', sourceUrl: '../test.ts'}); }); }); describe('(interpolations)', () => { it('should map a mix of interpolated and static content', () => { const mappings = compileAndMap('

Hello {{ name }}

'); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementStart(0, "h3")', sourceUrl: '../test.ts'}); expect(mappings).toContain({ source: 'Hello {{ name }}', generated: 'i0.ɵɵtextInterpolate1("Hello ", ctx.name, "")', sourceUrl: '../test.ts' }); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map a complex interpolated expression', () => { const mappings = compileAndMap('

{{ greeting + " " + name }}

'); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementStart(0, "h2")', sourceUrl: '../test.ts'}); expect(mappings).toContain({ source: '{{ greeting + " " + name }}', generated: 'i0.ɵɵtextInterpolate(ctx.greeting + " " + ctx.name)', sourceUrl: '../test.ts' }); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map interpolated properties', () => { const mappings = compileAndMap('
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelement(0, "div", 0)', sourceUrl: '../test.ts' }); expect(mappings).toContain({ source: 'id="{{name}}"', generated: 'i0.ɵɵpropertyInterpolate("id", ctx.name)', sourceUrl: '../test.ts' }); }); it('should map interpolation with pipe', () => { const mappings = compileAndMap('
{{200.3 | percent : 2 }}
'); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementStart(0, "div")', sourceUrl: '../test.ts'}); expect(mappings).toContain({ source: '{{200.3 | percent : 2 }}', generated: 'i0.ɵɵtextInterpolate(i0.ɵɵpipeBind2(2, 1, 200.3, 2))', sourceUrl: '../test.ts' }); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); }); describe('(property bindings)', () => { it('should map a simple input binding expression', () => { const mappings = compileAndMap('
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelement(0, "div", 0)', sourceUrl: '../test.ts' }); expect(mappings).toContain({ source: '[attr]="name"', generated: 'i0.ɵɵproperty("attr", ctx.name)', sourceUrl: '../test.ts' }); }); it('should map a complex input binding expression', () => { const mappings = compileAndMap('
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelement(0, "div", 0)', sourceUrl: '../test.ts' }); expect(mappings).toContain({ source: '[attr]="greeting + name"', generated: 'i0.ɵɵproperty("attr", ctx.greeting + ctx.name)', sourceUrl: '../test.ts' }); }); it('should map a longhand input binding expression', () => { const mappings = compileAndMap('
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelement(0, "div", 0)', sourceUrl: '../test.ts' }); expect(mappings).toContain({ source: 'bind-attr="name"', generated: 'i0.ɵɵproperty("attr", ctx.name)', sourceUrl: '../test.ts' }); }); it('should map a simple output binding expression', () => { const mappings = compileAndMap(''); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map a complex output binding expression', () => { const mappings = compileAndMap( ``); expect(mappings).toContain({ source: `', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map a longhand output binding expression', () => { const mappings = compileAndMap(''); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map a two-way binding expression', () => { const mappings = compileAndMap('Name: '); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵelementStart(1, "input", 0)', sourceUrl: '../test.ts' }); // TODO: improve mappings here expect(mappings).toContain({ source: '[(ngModel)]="name"', generated: 'i0.ɵɵlistener("ngModelChange", function TestCmp_Template_input_ngModelChange_1_listener($event) { return ctx.name = $event; })', sourceUrl: '../test.ts' }); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts' }); }); it('should map a longhand two-way binding expression', () => { const mappings = compileAndMap('Name: '); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵelementStart(1, "input", 0)', sourceUrl: '../test.ts' }); // TODO: improve mappings here expect(mappings).toContain({ source: 'bindon-ngModel="name"', generated: 'i0.ɵɵlistener("ngModelChange", function TestCmp_Template_input_ngModelChange_1_listener($event) { return ctx.name = $event; })', sourceUrl: '../test.ts' }); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts' }); }); it('should map a class input binding', () => { const mappings = compileAndMap('
Message
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelementStart(0, "div")', sourceUrl: '../test.ts' }); // TODO: Add better mappings for binding expect(mappings).toContain( {source: 'Message', generated: 'i0.ɵɵtext(1, "Message")', sourceUrl: '../test.ts'}); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); }); describe('(structural directives)', () => { it('should map *ngIf scenario', () => { const mappings = compileAndMap('
{{ name }}
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelementStart(0, "div")', sourceUrl: '../test.ts' }); // TODO - map the bindings better expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); // TODO: the `ctx_r...` appears to be dependent upon previous tests!!! // expect(mappings).toContain({ // source: '{{ name }}', // generated: 'i0.ɵɵtextInterpolate(ctx_r0.name)', // sourceUrl: '../test.ts' // }); }); it('should map ng-template [ngIf] scenario', () => { const mappings = compileAndMap( `\n` + `
{{ name }}
\n` + `
\n` + `
`); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementStart(0, "div")', sourceUrl: '../test.ts'}); // TODO - map the bindings better expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); // TODO: the `ctx_r...` appears to be dependent upon previous tests!!! // expect(mappings).toContain({ // source: '{{ name }}', // generated: 'i0.ɵɵtextInterpolate(ctx_r0.name)', // sourceUrl: '../test.ts' // }); }); it('should map *ngFor scenario', () => { const mappings = compileAndMap( '
{{ item }}
'); expect(mappings).toContain({ source: '
', generated: 'i0.ɵɵelementStart(0, "div")', sourceUrl: '../test.ts' }); // TODO - map the bindings better expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); it('should map ng-template [ngFor] scenario', () => { const mappings = compileAndMap( `{{ item }}`); // TODO - map the bindings better }); }); describe('(content projection)', () => { it('should map default and selected projection', () => { const mappings = compileAndMap( `

\n` + `
`); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementStart(0, "h3")', sourceUrl: '../test.ts'}); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵprojection(1)', sourceUrl: '../test.ts' }); expect(mappings).toContain( {source: '

', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementStart(2, "div")', sourceUrl: '../test.ts'}); expect(mappings).toContain({ source: '', generated: 'i0.ɵɵprojection(3, 1)', sourceUrl: '../test.ts' }); expect(mappings).toContain( {source: '
', generated: 'i0.ɵɵelementEnd()', sourceUrl: '../test.ts'}); }); }); it('should create (simple string) inline template source-mapping', () => { const mappings = compileAndMap('
this is a test
{{ 1 + 2 }}
'); // Creation mode expect(mappings).toContain( {generated: 'i0.ɵɵelementStart(0, "div")', source: '
', sourceUrl: '../test.ts'}); expect(mappings).toContain({ generated: 'i0.ɵɵtext(1, "this is a test")', source: 'this is a test', sourceUrl: '../test.ts' }); expect(mappings).toContain( {generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../test.ts'}); expect(mappings).toContain( {generated: 'i0.ɵɵelementStart(2, "div")', source: '
', sourceUrl: '../test.ts'}); expect(mappings).toContain( {generated: 'i0.ɵɵtext(3)', source: '{{ 1 + 2 }}', sourceUrl: '../test.ts'}); expect(mappings).toContain( {generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../test.ts'}); // Update mode expect(mappings).toContain({ generated: 'i0.ɵɵtextInterpolate(1 + 2)', source: '{{ 1 + 2 }}', sourceUrl: '../test.ts' }); }); it('should create (simple backtick string) inline template source-mapping', () => { const mappings = compileAndMap('
this is a test
{{ 1 + 2 }}
'); // Creation mode expect(mappings).toContain( {generated: 'i0.ɵɵelementStart(0, "div")', source: '
', sourceUrl: '../test.ts'}); expect(mappings).toContain({ generated: 'i0.ɵɵtext(1, "this is a test")', source: 'this is a test', sourceUrl: '../test.ts' }); expect(mappings).toContain( {generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../test.ts'}); expect(mappings).toContain( {generated: 'i0.ɵɵelementStart(2, "div")', source: '
', sourceUrl: '../test.ts'}); expect(mappings).toContain( {generated: 'i0.ɵɵtext(3)', source: '{{ 1 + 2 }}', sourceUrl: '../test.ts'}); expect(mappings).toContain( {generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../test.ts'}); // TODO(benlesh): We need to circle back and prevent the extra parens from being generated. // Update mode expect(mappings).toContain({ generated: 'i0.ɵɵtextInterpolate(1 + 2)', source: '{{ 1 + 2 }}', sourceUrl: '../test.ts' }); }); it('should create correct inline template source-mapping when the source contains escape sequences', () => { // Note that the escaped double quotes, which need un-escaping to be parsed correctly. const mappings = compileAndMap('
this is a test
'); expect(mappings).toContain({ generated: 'i0.ɵɵelementStart(0, "div", 0)', source: '
', sourceUrl: '../test.ts' }); const attrsMapping = mappings.find(mapping => /consts: \[\[1, "some-class"\]\]/.test(mapping.generated)); expect(attrsMapping).toBeDefined(); }); }); if (tsSourceMapBug29300Fixed()) { describe('External templates (where TS supports source-mapping)', () => { it('should create external template source-mapping', () => { const mappings = compileAndMap('
this is a test
{{ 1 + 2 }}
', './dir/test.html'); // Creation mode expect(mappings).toContain({ generated: 'i0.ɵɵelementStart(0, "div")', source: '
', sourceUrl: '../dir/test.html' }); expect(mappings).toContain({ generated: 'i0.ɵɵtext(1, "this is a test")', source: 'this is a test', sourceUrl: '../dir/test.html' }); expect(mappings).toContain( {generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../dir/test.html'}); expect(mappings).toContain({ generated: 'i0.ɵɵelementStart(2, "div")', source: '
', sourceUrl: '../dir/test.html' }); expect(mappings).toContain( {generated: 'i0.ɵɵtext(3)', source: '{{ 1 + 2 }}', sourceUrl: '../dir/test.html'}); expect(mappings).toContain( {generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../dir/test.html'}); // Update mode expect(mappings).toContain({ generated: 'i0.ɵɵtextInterpolate(1 + 2)', source: '{{ 1 + 2 }}', sourceUrl: '../dir/test.html' }); }); it('should create correct mappings when templateUrl is in a different rootDir', () => { const mappings = compileAndMap( '
this is a test
{{ 1 + 2 }}
', 'extraRootDir/test.html'); // Creation mode expect(mappings).toContain({ generated: 'i0.ɵɵelementStart(0, "div")', source: '
', sourceUrl: '../extraRootDir/test.html' }); expect(mappings).toContain({ generated: 'i0.ɵɵtext(1, "this is a test")', source: 'this is a test', sourceUrl: '../extraRootDir/test.html' }); expect(mappings).toContain({ generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../extraRootDir/test.html' }); expect(mappings).toContain({ generated: 'i0.ɵɵelementStart(2, "div")', source: '
', sourceUrl: '../extraRootDir/test.html' }); expect(mappings).toContain({ generated: 'i0.ɵɵtext(3)', source: '{{ 1 + 2 }}', sourceUrl: '../extraRootDir/test.html' }); expect(mappings).toContain({ generated: 'i0.ɵɵelementEnd()', source: '
', sourceUrl: '../extraRootDir/test.html' }); // Update mode expect(mappings).toContain({ generated: 'i0.ɵɵtextInterpolate(1 + 2)', source: '{{ 1 + 2 }}', sourceUrl: '../extraRootDir/test.html' }); }); }); } function compileAndMap(template: string, templateUrl: string | null = null) { const templateConfig = templateUrl ? `templateUrl: '${templateUrl}'` : ('template: `' + template.replace(/`/g, '\\`') + '`'); env.tsconfig({sourceMap: true}); env.write('test.ts', ` import {Component} from '@angular/core'; @Component({ selector: 'test-cmp', ${templateConfig} }) export class TestCmp {} `); if (templateUrl) { env.write(templateUrl, template); } env.driveMain(); return getMappedSegments(env, 'test.js'); } /** * Helper function for debugging failed mappings. * This lays out the segment mappings in the console to make it easier to compare. */ function dumpMappings(mappings: SegmentMapping[]) { mappings.forEach(map => { // tslint:disable-next-line:no-console console.log( padValue(map.sourceUrl, 20, 0) + ' : ' + padValue(inspect(map.source), 100, 23) + ' : ' + inspect(map.generated)); }); function padValue(value: string, max: number, start: number) { const padding = value.length > max ? ('\n' + ' '.repeat(max + start)) : ' '.repeat(max - value.length); return value + padding; } } }); });