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test(@angular-devkit/build-angular): add browser builder polyfills option tests

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This change adds expanded unit tests for the browser builder's `polyfills` option using the builder test harness.
This commit is contained in:
Charles Lyding 2020-12-23 12:47:31 -05:00 committed by Alan Agius
parent d5bbed0298
commit f4998f35a2
1 changed files with 57 additions and 0 deletions
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packages/angular_devkit/build_angular/src/browser/tests/options/polyfills_spec.ts Normal file
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/**
* @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 { buildWebpackBrowser } from '../../index';
import { BASE_OPTIONS, BROWSER_BUILDER_INFO, describeBuilder } from '../setup';
describeBuilder(buildWebpackBrowser, BROWSER_BUILDER_INFO, (harness) => {
describe('Option: "polyfills"', () => {
it('uses a provided TypeScript file', async () => {
harness.useTarget('build', {
...BASE_OPTIONS,
polyfills: 'src/polyfills.ts',
});
const { result } = await harness.executeOnce();
expect(result?.success).toBe(true);
harness.expectFile('dist/polyfills.js').toExist();
});
it('uses a provided JavaScript file', async () => {
await harness.writeFile('src/polyfills.js', `console.log('main');`);
harness.useTarget('build', {
...BASE_OPTIONS,
polyfills: 'src/polyfills.js',
});
const { result } = await harness.executeOnce();
expect(result?.success).toBe(true);
harness.expectFile('dist/polyfills.js').content.toContain(`console.log('main')`);
});
it('fails and shows an error when file does not exist', async () => {
harness.useTarget('build', {
...BASE_OPTIONS,
polyfills: 'src/missing.ts',
});
const { result, logs } = await harness.executeOnce({ outputLogsOnFailure: false });
expect(result?.success).toBe(false);
expect(logs).toContain(
jasmine.objectContaining({ message: jasmine.stringMatching('Module not found:') }),
);
harness.expectFile('dist/polyfills.js').toNotExist();
});
});
});