angular-cn/packages/compiler-cli/ngcc/test/writing/cleaning/package_cleaner_spec.ts

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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 {absoluteFrom, AbsoluteFsPath, FileSystem, getFileSystem, PathSegment} from '@angular/compiler-cli/src/ngtsc/file_system';
import {runInEachFileSystem} from '../../../../src/ngtsc/file_system/testing';
import {CleaningStrategy} from '../../../src/writing/cleaning/cleaning_strategies';
import {PackageCleaner} from '../../../src/writing/cleaning/package_cleaner';
runInEachFileSystem(() => {
describe('PackageCleaner', () => {
let fs: FileSystem;
let _: typeof absoluteFrom;
beforeEach(() => {
fs = getFileSystem();
_ = absoluteFrom;
});
describe('clean()', () => {
it('should call `canClean()` on each cleaner for each directory and file below the given one',
() => {
const log: string[] = [];
fs.ensureDir(_('/a/b/c'));
fs.writeFile(_('/a/b/d.txt'), 'd contents');
fs.writeFile(_('/a/b/c/e.txt'), 'e contents');
const a = new MockCleaningStrategy(log, 'a', false);
const b = new MockCleaningStrategy(log, 'b', false);
const c = new MockCleaningStrategy(log, 'c', false);
const cleaner = new PackageCleaner(fs, [a, b, c]);
cleaner.clean(_('/a/b'));
expect(log).toEqual([
`a:canClean('${_('/a/b/c')}', 'c')`,
`b:canClean('${_('/a/b/c')}', 'c')`,
`c:canClean('${_('/a/b/c')}', 'c')`,
`a:canClean('${_('/a/b/c/e.txt')}', 'e.txt')`,
`b:canClean('${_('/a/b/c/e.txt')}', 'e.txt')`,
`c:canClean('${_('/a/b/c/e.txt')}', 'e.txt')`,
`a:canClean('${_('/a/b/d.txt')}', 'd.txt')`,
`b:canClean('${_('/a/b/d.txt')}', 'd.txt')`,
`c:canClean('${_('/a/b/d.txt')}', 'd.txt')`,
]);
});
it('should call `clean()` for the first cleaner that returns true for `canClean()`', () => {
const log: string[] = [];
fs.ensureDir(_('/a/b/c'));
fs.writeFile(_('/a/b/d.txt'), 'd contents');
fs.writeFile(_('/a/b/c/e.txt'), 'e contents');
const a = new MockCleaningStrategy(log, 'a', false);
const b = new MockCleaningStrategy(log, 'b', true);
const c = new MockCleaningStrategy(log, 'c', false);
const cleaner = new PackageCleaner(fs, [a, b, c]);
cleaner.clean(_('/a/b'));
expect(log).toEqual([
`a:canClean('${_('/a/b/c')}', 'c')`,
`b:canClean('${_('/a/b/c')}', 'c')`,
`b:clean('${_('/a/b/c')}', 'c')`,
`a:canClean('${_('/a/b/c/e.txt')}', 'e.txt')`,
`b:canClean('${_('/a/b/c/e.txt')}', 'e.txt')`,
`b:clean('${_('/a/b/c/e.txt')}', 'e.txt')`,
`a:canClean('${_('/a/b/d.txt')}', 'd.txt')`,
`b:canClean('${_('/a/b/d.txt')}', 'd.txt')`,
`b:clean('${_('/a/b/d.txt')}', 'd.txt')`,
]);
});
});
});
});
class MockCleaningStrategy implements CleaningStrategy {
constructor(private log: string[], private label: string, private _canClean: boolean) {}
canClean(path: AbsoluteFsPath, basename: PathSegment) {
this.log.push(`${this.label}:canClean('${path}', '${basename}')`);
return this._canClean;
}
clean(path: AbsoluteFsPath, basename: PathSegment): void {
this.log.push(`${this.label}:clean('${path}', '${basename}')`);
}
}