How to use mock-fs - 10 common examples

mock({	[DUMMY_CONFIG_DIRECTORY_PATH]: {	...templates2files(mock_templates), // add directory without template.json "non-template": { "this-is-not-template.json": JSON.stringify({ task: { submit: "main.cpp", program: ["main.cpp"]	}	})	}	}	}); const result = await template.getTemplates(); mock.restore(); // there's no template "non-template"	expect(result).toMatchSnapshot();	});	test("files to be ignored", async () => {

beforeEach(function() { mockFs({  '/reports/locked.log': mockFs.file({ mode: parseInt('444', 8) }) }); // Actually we have to replace gutil.log with a stub because its // current implementation uses "require" at run-time which will // fail after file system is mocked. logStub = sinon.stub(gutil, 'log'); });

it('should ignore files with extensions listed in excludeExtensions', () => { let testDir = { 'dir1': { 'file-1.ts': mockfs.file({content: 'file-1.ts content', mtime: new Date(1000)}), 'file-1.cs': mockfs.file({content: 'file-1.cs content', mtime: new Date(1000)}), 'file-1d.cs': mockfs.file({content: 'file-1d.cs content', mtime: new Date(1000)}), 'file-1.d.cs': mockfs.file({content: 'file-1.d.cs content', mtime: new Date(1000)}), 'file-2.md': mockfs.file({content: 'file-2.md content', mtime: new Date(1000)}),  'file-3.ts': mockfs.file({content: 'file-3.ts content', mtime: new Date(1000)}), 'file-4.d.ts': mockfs.file({content: 'file-4.d.ts content', mtime: new Date(1000)}), 'subdir-1': { 'file-1.1.cc': mockfs.file({content: 'file-1.1.cc content', mtime: new Date(1000)}) } } }; mockfs(testDir); let differ = new TreeDiffer('testLabel', 'dir1', ['.ts', '.cs'], ['.d.ts', '.d.cs']); let diffResult = differ.diffTree(); expect(diffResult.addedPaths).toEqual(['file-1.cs', 'file-1.ts', 'file-1d.cs', 'file-3.ts']); // change two files testDir['dir1']['file-1.ts'] = mockfs.file({content: 'new content', mtime: new Date(1000)});

it('should handle changes via symbolic links', () => { let testDir = { 'orig_path': { 'file-1.txt': mockfs.file({content: 'file-1.txt content', mtime: new Date(1000)}), 'file-2.txt': mockfs.file({content: 'file-2.txt content', mtime: new Date(1000)}), 'subdir-1': { 'file-1.1.txt': mockfs.file({content: 'file-1.1.txt content', mtime: new Date(1000)}) } }, 'symlinks': { 'file-1.txt': mockfs.symlink({path: '../orig_path/file-1.txt'}),  'file-2.txt': mockfs.symlink({path: '../orig_path/file-2.txt'}), 'subdir-1': {'file-1.1.txt': mockfs.symlink({path: '../../orig_path/subdir-1/file-1.1.txt'})} } }; mockfs(testDir); let differ = new TreeDiffer('testLabel', 'symlinks'); let diffResult = differ.diffTree(); expect(diffResult.addedPaths).toEqual([ 'file-1.txt', 'file-2.txt', 'subdir-1' + path.sep + 'file-1.1.txt' ]); // change two files testDir['orig_path']['file-1.txt'] =

it('should handle changes via symbolic links', () => { let testDir = { 'orig_path': { 'file-1.txt': mockfs.file({content: 'file-1.txt content', mtime: new Date(1000)}), 'file-2.txt': mockfs.file({content: 'file-2.txt content', mtime: new Date(1000)}), 'subdir-1': { 'file-1.1.txt': mockfs.file({content: 'file-1.1.txt content', mtime: new Date(1000)}) } }, 'symlinks': { 'file-1.txt': mockfs.symlink({path: '../orig_path/file-1.txt'}), 'file-2.txt': mockfs.symlink({path: '../orig_path/file-2.txt'}), 'subdir-1':  {'file-1.1.txt': mockfs.symlink({path: '../../orig_path/subdir-1/file-1.1.txt'})} } }; mockfs(testDir); let differ = new TreeDiffer('testLabel', 'symlinks'); let diffResult = differ.diffTree(); expect(diffResult.addedPaths).toEqual([ 'file-1.txt', 'file-2.txt', 'subdir-1' + path.sep + 'file-1.1.txt' ]); // change two files testDir['orig_path']['file-1.txt'] = mockfs.file({content: 'new content', mtime: new Date(1000)}); testDir['orig_path']['subdir-1']['file-1.1.txt'] =

it('should handle changes via symbolic links', () => { let testDir = { 'orig_path': { 'file-1.txt': mockfs.file({content: 'file-1.txt content', mtime: new Date(1000)}), 'file-2.txt': mockfs.file({content: 'file-2.txt content', mtime: new Date(1000)}), 'subdir-1': { 'file-1.1.txt': mockfs.file({content: 'file-1.1.txt content', mtime: new Date(1000)}) } }, 'symlinks': {  'file-1.txt': mockfs.symlink({path: '../orig_path/file-1.txt'}), 'file-2.txt': mockfs.symlink({path: '../orig_path/file-2.txt'}), 'subdir-1': {'file-1.1.txt': mockfs.symlink({path: '../../orig_path/subdir-1/file-1.1.txt'})} } }; mockfs(testDir); let differ = new TreeDiffer('testLabel', 'symlinks'); let diffResult = differ.diffTree(); expect(diffResult.addedPaths).toEqual([ 'file-1.txt', 'file-2.txt', 'subdir-1' + path.sep + 'file-1.1.txt' ]); // change two files

grunt.registerTask('startMocking', function () { mock({ 'test/fake/': { 'file1.js': mock.file({ content: 'file content here', ctime: new Date(1411609054470), mtime: new Date(1411609054470) //Wed Sep 24 2014 18:37:34 GMT-0700 (PDT) }), 'file2.js': mock.file({ content: 'file content here', ctime: new Date(1369140245000), mtime: new Date(1369140245000) //Tue May 21 2013 05:44:05 GMT-0700 (PDT) }),  'file3.js': mock.file({ content: 'file content here', ctime: new Date(1328091453000), mtime: new Date(1328091453000) //Wed Feb 01 2012 02:17:33 GMT-0800 (PST) }), 'file4.js': mock.file({ content: 'file content here', ctime: new Date(1388563200000), mtime: new Date(1388563200000) //Wed Jan 01 2014 00:00:00 GMT-0800 (PST) }) } }); // grunt is using glob that is using graceful-fs. // It also needs to be mocked _fileGlobSync = grunt.file.glob.sync; grunt.file.glob.sync = function (pattern, options) {

beforeEach(async function mockValidProjectLayout(done) {  mockFs({ 'path/to/testsuites': { 'sakuli.properties': ` sakuli.environment.similarity.default=0.99 `, 'suite': { 'testsuite.properties': `testsuite.name=test`, 'testsuite.suite': stripIndent` case1/sakuli_demo.js http://sahi.example.com/_s_/dyn/Driver_initialized case2/sakuli_demo.js http://sahi.example.com/_s_/dyn/Driver_initialized `, case1: { 'sakuli_demo.js': '// Test' }, case2: { 'sakuli_demo.js': '// Test' }

test('.babelrc is detected when present', t => {	t.is(parseOptions({}, {}).babelConfig, undefined); const babelrc = mock.file({content: '{"presets": ["@babel/preset-env" ]}'});	mock({'.babelrc': babelrc});	t.is(parseOptions({}, {}).babelConfig, process.cwd() + '/.babelrc');	mock.restore(); });

it("Picks first available file when given multiple extensions", () => { cache.extensions = [".story", ".snap"]; fsMock({  "/abc/__snapshots__/tt.ts.story": fsMock.file({ mtime: new Date(2017, 10, 10, 10, 1, 1), content: "story content" }), "/abc/__snapshots__/tt.ts.snap": fsMock.file({ mtime: new Date(2017, 10, 10, 10, 1, 1), content: "some content" }) }); (parseSnapshotFile as jest.Mock).mockReturnValue([ "this is definition, not important for test" ]); const def = cache.getSnapshotForFile("/abc/tt.ts"); expect(def).toEqual({ file: "/abc/__snapshots__/tt.ts.story", definitions: ["this is definition, not important for test"]