64 lines
2.2 KiB
TypeScript
64 lines
2.2 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 {absoluteFrom} from '@angular/compiler-cli/src/ngtsc/file_system';
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import {initMockFileSystem} from '@angular/compiler-cli/src/ngtsc/file_system/testing';
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import {LanguageServiceTestEnvironment} from './env';
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describe('language-service/compiler integration', () => {
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beforeEach(() => {
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initMockFileSystem('Native');
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});
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it('should show type-checking errors from components with poisoned scopes', () => {
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// Normally, the Angular compiler suppresses errors from components that belong to NgModules
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// which themselves have errors (such scopes are considered "poisoned"), to avoid overwhelming
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// the user with secondary errors that stem from a primary root cause. However, this prevents
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// the generation of type check blocks and other metadata within the compiler which drive the
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// Language Service's understanding of components. Therefore in the Language Service, the
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// compiler is configured to make use of such data even if it's "poisoned". This test verifies
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// that a component declared in an NgModule with a faulty import still generates template
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// diagnostics.
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const file = absoluteFrom('/test.ts');
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const env = LanguageServiceTestEnvironment.setup([{
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name: file,
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contents: `
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import {Component, Directive, Input, NgModule} from '@angular/core';
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@Component({
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selector: 'test-cmp',
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template: '<div [dir]="3"></div>',
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})
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export class Cmp {}
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@Directive({
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selector: '[dir]',
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})
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export class Dir {
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@Input() dir!: string;
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}
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export class NotAModule {}
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@NgModule({
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declarations: [Cmp, Dir],
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imports: [NotAModule],
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})
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export class Mod {}
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`,
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isRoot: true,
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}]);
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const diags = env.ngLS.getSemanticDiagnostics(file);
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expect(diags.map(diag => diag.messageText))
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.toContain(`Type 'number' is not assignable to type 'string'.`);
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});
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});
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