68 lines
2.4 KiB
TypeScript
68 lines
2.4 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 {getFileSystem} from '../../../src/ngtsc/file_system';
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import {runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
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import {SyncLocker} from '../../src/locking/sync_locker';
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import {MockLockFile} from '../helpers/mock_lock_file';
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runInEachFileSystem(() => {
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describe('SyncLocker', () => {
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describe('lock()', () => {
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it('should guard the `fn()` with calls to `write()` and `remove()`', () => {
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const fs = getFileSystem();
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const log: string[] = [];
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const lockFile = new MockLockFile(fs, log);
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const locker = new SyncLocker(lockFile);
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locker.lock(() => log.push('fn()'));
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expect(log).toEqual(['write()', 'fn()', 'remove()']);
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});
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it('should guard the `fn()` with calls to `write()` and `remove()`, even if it throws',
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() => {
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let error: string = '';
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const fs = getFileSystem();
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const log: string[] = [];
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const lockFile = new MockLockFile(fs, log);
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const locker = new SyncLocker(lockFile);
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try {
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locker.lock(() => {
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log.push('fn()');
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throw new Error('ERROR');
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});
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} catch (e) {
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error = e.message;
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}
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expect(error).toEqual('ERROR');
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expect(log).toEqual(['write()', 'fn()', 'remove()']);
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});
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it('should error if a lock file already exists', () => {
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const fs = getFileSystem();
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const log: string[] = [];
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const lockFile = new MockLockFile(fs, log);
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const locker = new SyncLocker(lockFile);
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spyOn(lockFile, 'write').and.callFake(() => {
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throw {code: 'EEXIST'};
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});
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spyOn(lockFile, 'read').and.returnValue('188');
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expect(() => locker.lock(() => {}))
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.toThrowError(
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`ngcc is already running at process with id 188.\n` +
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`If you are running multiple builds in parallel then you might try pre-processing your node_modules via the command line ngcc tool before starting the builds.\n` +
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`(If you are sure no ngcc process is running then you should delete the lock-file at ${
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lockFile.path}.)`);
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});
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});
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});
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});
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