angular/packages/compiler-cli/test/ngtsc/template_mapping_spec.ts
Joey Perrott 3df1dccebe refactor: various build and import specificer fixes for strict deps (#63323)
Change direct deps in bazel targets and import specifiers within files to maintain strict deps requirements ahead of enabling strict deps tests in the repo

PR Close #63323
2025-08-22 14:45:00 -07:00

902 lines
31 KiB
TypeScript

/**
* @license
* Copyright Google LLC 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.dev/license
*/
/// <reference types="node" />
import {inspect} from 'node:util';
import ts from 'typescript';
import {runInEachFileSystem} from '../../src/ngtsc/file_system/testing';
import {loadStandardTestFiles} from '../../src/ngtsc/testing';
import {NgtscTestEnvironment} from './env';
import {getMappedSegments, SegmentMapping} from './sourcemap_utils';
const testFiles = loadStandardTestFiles();
runInEachFileSystem((os) => {
describe('template source-mapping', () => {
let env!: NgtscTestEnvironment;
beforeEach(() => {
env = NgtscTestEnvironment.setup(testFiles);
env.tsconfig({
sourceMap: true,
target: ts.ScriptTarget.ES2015,
enableI18nLegacyMessageIdFormat: false,
});
});
describe('Inline templates', () => {
describe('(element creation)', () => {
it('should map simple element with content', async () => {
const mappings = await compileAndMap('<h1>Heading 1</h1>');
expectMapping(mappings, {
source: '<h1>',
generated: 'i0.ɵɵelementStart(0, "h1")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Heading 1',
generated: 'i0.ɵɵtext(1, "Heading 1")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</h1>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map void element', async () => {
const mappings = await compileAndMap('<hr>');
expectMapping(mappings, {
source: '<hr>',
generated: 'i0.ɵɵelement(0, "hr")',
sourceUrl: '../test.ts',
});
});
});
describe('(interpolations)', () => {
it('should map a mix of interpolated and static content', async () => {
const mappings = await compileAndMap('<h3>Hello {{ name }}</h3>');
expectMapping(mappings, {
source: '<h3>',
generated: 'i0.ɵɵelementStart(0, "h3")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Hello {{ name }}',
generated: 'i0.ɵɵtextInterpolate1("Hello ", ctx.name)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</h3>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map a complex interpolated expression', async () => {
const mappings = await compileAndMap('<h2>{{ greeting + " " + name }}</h2>');
expectMapping(mappings, {
source: '<h2>',
generated: 'i0.ɵɵelementStart(0, "h2")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '{{ greeting + " " + name }}',
generated: 'i0.ɵɵtextInterpolate(ctx.greeting + " " + ctx.name)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</h2>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map interpolated properties', async () => {
const mappings = await compileAndMap('<div id="{{name}}"></div>');
expectMapping(mappings, {
source: '<div id="{{name}}"></div>',
generated: 'i0.ɵɵelement(0, "div", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'id="{{name}}"',
generated: 'i0.ɵɵinterpolate(ctx.name)',
sourceUrl: '../test.ts',
});
});
it('should map interpolation with pipe', async () => {
const mappings = await compileAndMap('<div>{{200.3 | percent : 2 }}</div>');
expectMapping(mappings, {
source: '<div>',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '{{200.3 | percent : 2 }}',
generated: 'i0.ɵɵtextInterpolate(i0.ɵɵpipeBind2(2, 1, 200.3, 2))',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
});
describe('(property bindings)', () => {
it('should map a simple input binding expression', async () => {
const mappings = await compileAndMap('<div [attr]="name"></div>');
expectMapping(mappings, {
source: '<div [attr]="name"></div>',
generated: 'i0.ɵɵelement(0, "div", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '[attr]="name"',
generated: 'i0.ɵɵproperty("attr", ctx.name)',
sourceUrl: '../test.ts',
});
});
it('should map a complex input binding expression', async () => {
const mappings = await compileAndMap('<div [attr]="greeting + name"></div>');
expectMapping(mappings, {
source: '<div [attr]="greeting + name"></div>',
generated: 'i0.ɵɵelement(0, "div", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '[attr]="greeting + name"',
generated: 'i0.ɵɵproperty("attr", ctx.greeting + ctx.name)',
sourceUrl: '../test.ts',
});
});
it('should map a longhand input binding expression', async () => {
const mappings = await compileAndMap('<div bind-attr="name"></div>');
expectMapping(mappings, {
source: '<div bind-attr="name"></div>',
generated: 'i0.ɵɵelement(0, "div", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'bind-attr="name"',
generated: 'i0.ɵɵproperty("attr", ctx.name)',
sourceUrl: '../test.ts',
});
});
it('should map a simple output binding expression', async () => {
const mappings = await compileAndMap('<button (click)="doSomething()">Do it</button>');
expectMapping(mappings, {
source: '<button (click)="doSomething()">',
generated: 'i0.ɵɵelementStart(0, "button", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Do it',
generated: 'i0.ɵɵtext(1, "Do it")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'doSomething()',
generated: 'ctx.doSomething()',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</button>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map a complex output binding expression', async () => {
const mappings = await compileAndMap(
`<button (click)="items.push('item' + items.length)">Add Item</button>`,
);
expectMapping(mappings, {
source: `<button (click)="items.push('item' + items.length)">`,
generated: 'i0.ɵɵelementStart(0, "button", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Add Item',
generated: 'i0.ɵɵtext(1, "Add Item")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'items.push(',
generated: 'ctx.items.push(',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {source: `'item'`, generated: `"item"`, sourceUrl: '../test.ts'});
expectMapping(mappings, {
source: ' + items.length)',
generated: ' + ctx.items.length)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</button>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map a longhand output binding expression', async () => {
const mappings = await compileAndMap('<button on-click="doSomething()">Do it</button>');
expectMapping(mappings, {
source: '<button on-click="doSomething()">',
generated: 'i0.ɵɵelementStart(0, "button", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Do it',
generated: 'i0.ɵɵtext(1, "Do it")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'doSomething()',
generated: 'ctx.doSomething()',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</button>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map a two-way binding expression', async () => {
const mappings = await compileAndMap('Name: <input [(ngModel)]="name">');
expectMapping(mappings, {
source: '<input [(ngModel)]="name">',
generated: 'i0.ɵɵelementStart(1, "input", 0)',
sourceUrl: '../test.ts',
});
// TODO: improve mappings here
expectMapping(mappings, {
source: '[(ngModel)]="name"',
generated:
'i0.ɵɵtwoWayListener("ngModelChange", function TestCmp_Template_input_ngModelChange_1_listener($event) { i0.ɵɵtwoWayBindingSet(ctx.name, $event) || (ctx.name = $event); return $event; })',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '<input [(ngModel)]="name">',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map a longhand two-way binding expression', async () => {
const mappings = await compileAndMap('Name: <input bindon-ngModel="name">');
expectMapping(mappings, {
source: '<input bindon-ngModel="name">',
generated: 'i0.ɵɵelementStart(1, "input", 0)',
sourceUrl: '../test.ts',
});
// TODO: improve mappings here
expectMapping(mappings, {
source: 'bindon-ngModel="name"',
generated:
'i0.ɵɵtwoWayListener("ngModelChange", function TestCmp_Template_input_ngModelChange_1_listener($event) { i0.ɵɵtwoWayBindingSet(ctx.name, $event) || (ctx.name = $event); return $event; })',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '<input bindon-ngModel="name">',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map a class input binding', async () => {
const mappings = await compileAndMap('<div [class.initial]="isInitial">Message</div>');
expectMapping(mappings, {
source: '<div [class.initial]="isInitial">',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
// TODO: Add better mappings for binding
expectMapping(mappings, {
source: 'Message',
generated: 'i0.ɵɵtext(1, "Message")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
});
describe('(structural directives)', () => {
it('should map *ngIf scenario', async () => {
const mappings = await compileAndMap('<div *ngIf="showMessage()">{{ name }}</div>');
expectMapping(mappings, {
source: '<div *ngIf="showMessage()">',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
// TODO - map the bindings better
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
// TODO: the `ctx_r...` appears to be dependent upon previous tests!!!
// expectMapping(mappings, {
// source: '{{ name }}',
// generated: 'i0.ɵɵtextInterpolate(ctx_r0.name)',
// sourceUrl: '../test.ts'
// });
});
it('should map ng-template [ngIf] scenario', async () => {
const mappings = await compileAndMap(
`<ng-template [ngIf]="showMessage()">\n` +
` <div>{{ name }}</div>\n` +
` <hr>\n` +
`</ng-template>`,
);
expectMapping(mappings, {
source: '<div>',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
// TODO - map the bindings better
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
// TODO: the `ctx_r...` appears to be dependent upon previous tests!!!
// expectMapping(mappings, {
// source: '{{ name }}',
// generated: 'i0.ɵɵtextInterpolate(ctx_r0.name)',
// sourceUrl: '../test.ts'
// });
});
it('should map *ngFor scenario', async () => {
const mappings = await compileAndMap(
'<div *ngFor="let item of items; index as i; trackBy: trackByFn">{{ item }}</div>',
);
expectMapping(mappings, {
source: '<div *ngFor="let item of items; index as i; trackBy: trackByFn">',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
// TODO - map the bindings better
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
it('should map ng-template [ngFor] scenario', () => {
const mappings = compileAndMap(
`<ng-template ngFor [ngForOf]="items" let-item>{{ item }}</ng-template>`,
);
// TODO - map the bindings better
});
});
describe('(content projection)', () => {
it('should map default and selected projection', async () => {
const mappings = await compileAndMap(
`<h3><ng-content select="title"></ng-content></h3>\n` +
`<div><ng-content></ng-content></div>`,
);
expectMapping(mappings, {
source: '<h3>',
generated: 'i0.ɵɵelementStart(0, "h3")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '<ng-content select="title"></ng-content>',
generated: 'i0.ɵɵprojection(1)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</h3>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '<div>',
generated: 'i0.ɵɵelementStart(2, "div")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '<ng-content></ng-content>',
generated: 'i0.ɵɵprojection(3, 1)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
});
});
describe('$localize', () => {
it('should create simple i18n message source-mapping', async () => {
const mappings = await compileAndMap(`<div i18n>Hello, World!</div>`);
expectMapping(mappings, {
source: '<div i18n>',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Hello, World!',
generated: '`Hello, World!`',
sourceUrl: '../test.ts',
});
});
it('should create placeholder source-mappings', async () => {
const mappings = await compileAndMap(`<div i18n>Hello, {{name}}!</div>`);
expectMapping(mappings, {
source: '<div i18n>',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Hello, ',
generated: '`Hello, ${',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '{{name}}',
generated: '"\\uFFFD0\\uFFFD"',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '!',
generated: '}:INTERPOLATION:!`',
sourceUrl: '../test.ts',
});
});
// TODO: Temporarily disabled because Template Pipeline produces different const indices
// than TemplateDefinitionBuilder. Re-enable after Template Pipeline is the default, and
// update the test with the new const index.
xit('should correctly handle collapsed whitespace in interpolation placeholder source-mappings', async () => {
const mappings = await compileAndMap(
`<div i18n title=" pre-title {{name}} post-title" i18n-title> pre-body {{greeting}} post-body</div>`,
);
expectMapping(mappings, {
source: '<div i18n title=" pre-title {{name}} post-title" i18n-title>',
generated: 'i0.ɵɵelementStart(0, "div", 0)',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: ' pre-body ',
generated: '` pre-body ${',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '{{greeting}}',
generated: '"\\uFFFD0\\uFFFD"',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: ' post-body',
generated: '}:INTERPOLATION: post-body`',
sourceUrl: '../test.ts',
});
});
it('should correctly handle collapsed whitespace in element placeholder source-mappings', async () => {
const mappings = await compileAndMap(
`<div i18n>\n pre-p\n <p>\n in-p\n </p>\n post-p\n</div>`,
);
// $localize expressions
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '\n pre-p\n ',
generated: '` pre-p ${',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '<p>',
generated: '"\\uFFFD#2\\uFFFD"',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '\n in-p\n ',
generated: '}:START_PARAGRAPH: in-p ${',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '</p>',
generated: '"\\uFFFD/#2\\uFFFD"',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '\n post-p\n',
generated: '}:CLOSE_PARAGRAPH: post-p\n`',
});
// ivy instructions
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '<div i18n>',
generated: 'i0.ɵɵelementStart(0, "div")',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '<div i18n>',
generated: 'i0.ɵɵi18nStart(1, 0)',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '<p>\n in-p\n </p>',
generated: 'i0.ɵɵelement(2, "p")',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '</div>',
generated: 'i0.ɵɵi18nEnd()',
});
expectMapping(mappings, {
sourceUrl: '../test.ts',
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
});
});
it('should create tag (container) placeholder source-mappings', async () => {
const mappings = await compileAndMap(`<div i18n>Hello, <b>World</b>!</div>`);
expectMapping(mappings, {
source: '<div i18n>',
generated: 'i0.ɵɵelementStart(0, "div")',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</div>',
generated: 'i0.ɵɵelementEnd()',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'Hello, ',
generated: '`Hello, ${',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '<b>',
generated: '"\\uFFFD#2\\uFFFD"',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: 'World',
generated: '}:START_BOLD_TEXT:World${',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '</b>',
generated: '"\\uFFFD/#2\\uFFFD"',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
source: '!',
generated: '}:CLOSE_BOLD_TEXT:!`',
sourceUrl: '../test.ts',
});
});
});
it('should create (simple string) inline template source-mapping', async () => {
const mappings = await compileAndMap('<div>this is a test</div><div>{{ 1 + 2 }}</div>');
// Creation mode
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(0, "div")',
source: '<div>',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
generated: 'i0.ɵɵtext(1, "this is a test")',
source: 'this is a test',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementEnd()',
source: '</div>',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(2, "div")',
source: '<div>',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
generated: 'i0.ɵɵtext(3)',
source: '{{ 1 + 2 }}',
sourceUrl: '../test.ts',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementEnd()',
source: '</div>',
sourceUrl: '../test.ts',
});
// Update mode
expectMapping(mappings, {
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', async () => {
// Note that the escaped double quotes, which need un-escaping to be parsed correctly.
const mappings = await compileAndMap('<div class=\\"some-class\\">this is a test</div>');
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(0, "div", 0)',
source: '<div class=\\"some-class\\">',
sourceUrl: '../test.ts',
});
const attrsMapping = mappings.find((mapping) =>
/consts: \[\[1, "some-class"\]\]/.test(mapping.generated),
);
expect(attrsMapping).toBeDefined();
});
});
describe('External templates (where TS supports source-mapping)', () => {
it('should create external template source-mapping', async () => {
const mappings = await compileAndMap(
'<div>this is a test</div><div>{{ 1 + 2 }}</div>',
'./dir/test.html',
);
// Creation mode
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(0, "div")',
source: '<div>',
sourceUrl: '../dir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵtext(1, "this is a test")',
source: 'this is a test',
sourceUrl: '../dir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementEnd()',
source: '</div>',
sourceUrl: '../dir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(2, "div")',
source: '<div>',
sourceUrl: '../dir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵtext(3)',
source: '{{ 1 + 2 }}',
sourceUrl: '../dir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementEnd()',
source: '</div>',
sourceUrl: '../dir/test.html',
});
// Update mode
expectMapping(mappings, {
generated: 'i0.ɵɵtextInterpolate(1 + 2)',
source: '{{ 1 + 2 }}',
sourceUrl: '../dir/test.html',
});
});
it('should create correct mappings when templateUrl is in a different rootDir', async () => {
const mappings = await compileAndMap(
'<div>this is a test</div><div>{{ 1 + 2 }}</div>',
'extraRootDir/test.html',
);
// Creation mode
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(0, "div")',
source: '<div>',
sourceUrl: '../extraRootDir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵtext(1, "this is a test")',
source: 'this is a test',
sourceUrl: '../extraRootDir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementEnd()',
source: '</div>',
sourceUrl: '../extraRootDir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementStart(2, "div")',
source: '<div>',
sourceUrl: '../extraRootDir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵtext(3)',
source: '{{ 1 + 2 }}',
sourceUrl: '../extraRootDir/test.html',
});
expectMapping(mappings, {
generated: 'i0.ɵɵelementEnd()',
source: '</div>',
sourceUrl: '../extraRootDir/test.html',
});
// Update mode
expectMapping(mappings, {
generated: 'i0.ɵɵtextInterpolate(1 + 2)',
source: '{{ 1 + 2 }}',
sourceUrl: '../extraRootDir/test.html',
});
});
});
async function compileAndMap(template: string, templateUrl: string | null = null) {
const templateConfig = templateUrl
? `templateUrl: '${templateUrl}'`
: 'template: `' + template.replace(/\`/g, '\\`') + '`';
env.write(
'test.ts',
`
import {Component, Directive, Input, Output, EventEmitter, Pipe, NgModule} from '@angular/core';
@Directive({
selector: '[ngModel],[attr],[ngModelChange]',
standalone: false,
})
export class AllDirective {
@Input() ngModel!: any;
@Output() ngModelChange = new EventEmitter<any>();
@Input() attr!: any;
}
@Pipe({
name: 'percent',
standalone: false,
})
export class PercentPipe {
transform(v: any) {}
}
@Component({
selector: 'test-cmp',
${templateConfig},
standalone: false,
})
export class TestCmp {
name = '';
isInitial = false;
doSomething() {}
items: any[] = [];
greeting = '';
}
@NgModule({
declarations: [TestCmp, AllDirective, PercentPipe],
})
export class Module {}
`,
);
if (templateUrl) {
env.write(templateUrl, template);
}
env.driveMain();
return await 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;
}
}
function expectMapping(mappings: SegmentMapping[], expected: SegmentMapping): void {
if (
mappings.some(
(m) =>
m.generated === expected.generated &&
m.source === expected.source &&
m.sourceUrl === expected.sourceUrl,
)
) {
return;
}
const matchingGenerated = mappings.filter((m) => m.generated === expected.generated);
const matchingSource = mappings.filter((m) => m.source === expected.source);
const message = [
'Expected mappings to contain the following mapping',
prettyPrintMapping(expected),
];
if (matchingGenerated.length > 0) {
message.push('');
message.push('There are the following mappings that match the generated text:');
matchingGenerated.forEach((m) => message.push(prettyPrintMapping(m)));
}
if (matchingSource.length > 0) {
message.push('');
message.push('There are the following mappings that match the source text:');
matchingSource.forEach((m) => message.push(prettyPrintMapping(m)));
}
fail(message.join('\n'));
}
function prettyPrintMapping(mapping: SegmentMapping): string {
return [
'{',
` generated: ${JSON.stringify(mapping.generated)}`,
` source: ${JSON.stringify(mapping.source)}`,
` sourceUrl: ${JSON.stringify(mapping.sourceUrl)}`,
'}',
].join('\n');
}
});
});