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How to use watchmanCrawl method in Jest

Best JavaScript code snippet using jest

58watchman.test.js

Source:58watchman.test.js

...100  afterEach(() => {101    watchman.Client.mock.instances[0].command.mockClear();102  });103  test('returns a list of all files when there are no clocks', () =>104    watchmanCrawl({105      data: {106        clocks: new Map(),107        files: new Map(),108      },109      extensions: ['js', 'json'],110      ignore: pearMatcher,111      rootDir: ROOT_MOCK,112      roots: ROOTS,113    }).then(data => {114      const client = watchman.Client.mock.instances[0];115      const calls = client.command.mock.calls;116      expect(client.on).toBeCalled();117      expect(client.on).toBeCalledWith('error', expect.any(Function));118      // Call 0 and 1 are for ['watch-project']119      expect(calls[0][0][0]).toEqual('watch-project');120      expect(calls[1][0][0]).toEqual('watch-project');121      // Call 2 is the query122      const query = calls[2][0];123      expect(query[0]).toEqual('query');124      expect(query[2].expression).toEqual([125        'allof',126        ['type', 'f'],127        ['anyof', ['suffix', 'js'], ['suffix', 'json']],128        ['anyof', ['dirname', 'fruits'], ['dirname', 'vegetables']],129      ]);130      expect(query[2].fields).toEqual(['name', 'exists', 'mtime_ms']);131      expect(query[2].glob).toEqual([132        'fruits/**/*.js',133        'fruits/**/*.json',134        'vegetables/**/*.js',135        'vegetables/**/*.json',136      ]);137      expect(data.clocks).toEqual(138        createMap({139          '': 'c:fake-clock:1',140        }),141      );142      expect(data.files).toEqual(mockFiles);143      expect(client.end).toBeCalled();144    }));145  test('applies the mapper when needed', () => {146    mockResponse = {147      'list-capabilities': {148        [undefined]: {149          capabilities: ['field-content.sha1hex'],150        },151      },152      query: {153        [ROOT_MOCK]: {154          clock: 'c:fake-clock:1',155          files: [156            {157              exists: true,158              mtime_ms: {toNumber: () => 33},159              name: 'vegetables/durian.zip',160            },161          ],162          is_fresh_instance: true,163          version: '4.5.0',164        },165      },166      'watch-project': WATCH_PROJECT_MOCK,167    };168    return watchmanCrawl({169      data: {170        clocks: new Map(),171        files: new Map(),172      },173      extensions: ['js', 'json', 'zip'],174      ignore: pearMatcher,175      mapper: n =>176        n.endsWith('.zip')177          ? [path.join(n, 'foo.1.js'), path.join(n, 'foo.2.js')]178          : null,179      rootDir: ROOT_MOCK,180      roots: ROOTS,181    }).then(data => {182      expect(data.files).toEqual(183        createMap({184          [path.join(DURIAN_RELATIVE, 'foo.1.js')]: ['', 33, 0, [], null],185          [path.join(DURIAN_RELATIVE, 'foo.2.js')]: ['', 33, 0, [], null],186        }),187      );188    });189  });190  test('updates the file object when the clock is given', () => {191    mockResponse = {192      'list-capabilities': {193        [undefined]: {194          capabilities: ['field-content.sha1hex'],195        },196      },197      query: {198        [ROOT_MOCK]: {199          clock: 'c:fake-clock:2',200          files: [201            {202              exists: true,203              mtime_ms: {toNumber: () => 42},204              name: 'fruits/kiwi.js',205            },206            {207              exists: false,208              mtime_ms: null,209              name: 'fruits/tomato.js',210            },211          ],212          is_fresh_instance: false,213          version: '4.5.0',214        },215      },216      'watch-project': WATCH_PROJECT_MOCK,217    };218    const clocks = createMap({219      '': 'c:fake-clock:1',220    });221    return watchmanCrawl({222      data: {223        clocks,224        files: mockFiles,225      },226      extensions: ['js', 'json'],227      ignore: pearMatcher,228      rootDir: ROOT_MOCK,229      roots: ROOTS,230    }).then(data => {231      // The object was reused.232      expect(data.files).toBe(mockFiles);233      expect(data.clocks).toEqual(234        createMap({235          '': 'c:fake-clock:2',236        }),237      );238      expect(data.files).toEqual(239        createMap({240          [KIWI_RELATIVE]: ['', 42, 0, [], null],241          [MELON_RELATIVE]: ['', 33, 0, [], null],242          [STRAWBERRY_RELATIVE]: ['', 30, 0, [], null],243        }),244      );245    });246  });247  test('resets the file object when watchman is restarted', () => {248    const mockTomatoSha1 = '321f6b7e8bf7f29aab89c5e41a555b1b0baa41a9';249    mockResponse = {250      'list-capabilities': {251        [undefined]: {252          capabilities: ['field-content.sha1hex'],253        },254      },255      query: {256        [ROOT_MOCK]: {257          clock: 'c:fake-clock:3',258          files: [259            {260              exists: true,261              mtime_ms: {toNumber: () => 42},262              name: 'fruits/kiwi.js',263            },264            {265              exists: true,266              mtime_ms: {toNumber: () => 41},267              name: 'fruits/banana.js',268            },269            {270              'content.sha1hex': mockTomatoSha1,271              exists: true,272              mtime_ms: {toNumber: () => 76},273              name: 'fruits/tomato.js',274            },275          ],276          is_fresh_instance: true,277          version: '4.5.0',278        },279      },280      'watch-project': WATCH_PROJECT_MOCK,281    };282    const mockBananaMetadata = ['Banana', 41, 1, ['Raspberry'], null];283    mockFiles.set(BANANA_RELATIVE, mockBananaMetadata);284    const mockTomatoMetadata = ['Tomato', 31, 1, [], mockTomatoSha1];285    mockFiles.set(TOMATO_RELATIVE, mockTomatoMetadata);286    const clocks = createMap({287      '': 'c:fake-clock:1',288    });289    return watchmanCrawl({290      data: {291        clocks,292        files: mockFiles,293      },294      extensions: ['js', 'json'],295      ignore: pearMatcher,296      rootDir: ROOT_MOCK,297      roots: ROOTS,298    }).then(data => {299      // The file object was *not* reused.300      expect(data.files).not.toBe(mockFiles);301      expect(data.clocks).toEqual(302        createMap({303          '': 'c:fake-clock:3',304        }),305      );306      // /fruits/strawberry.js was removed from the file list.307      expect(data.files).toEqual(308        createMap({309          [BANANA_RELATIVE]: mockBananaMetadata,310          [KIWI_RELATIVE]: ['', 42, 0, [], null],311          [TOMATO_RELATIVE]: ['Tomato', 76, 1, [], mockTomatoSha1],312        }),313      );314      // Even though the file list was reset, old file objects are still reused315      // if no changes have been made316      expect(data.files.get(BANANA_RELATIVE)).toBe(mockBananaMetadata);317      // Old file objects are not reused if they have a different mtime318      expect(data.files.get(TOMATO_RELATIVE)).not.toBe(mockTomatoMetadata);319    });320  });321  test('properly resets the file map when only one watcher is reset', () => {322    mockResponse = {323      'list-capabilities': {324        [undefined]: {325          capabilities: ['field-content.sha1hex'],326        },327      },328      query: {329        [FRUITS]: {330          clock: 'c:fake-clock:3',331          files: [332            {333              exists: true,334              mtime_ms: {toNumber: () => 42},335              name: 'kiwi.js',336            },337          ],338          is_fresh_instance: false,339          version: '4.5.0',340        },341        [VEGETABLES]: {342          clock: 'c:fake-clock:4',343          files: [344            {345              exists: true,346              mtime_ms: {toNumber: () => 33},347              name: 'melon.json',348            },349          ],350          is_fresh_instance: true,351          version: '4.5.0',352        },353      },354      'watch-project': {355        [FRUITS]: {356          watch: forcePOSIXPaths(FRUITS),357        },358        [VEGETABLES]: {359          watch: forcePOSIXPaths(VEGETABLES),360        },361      },362    };363    const clocks = createMap({364      [FRUITS_RELATIVE]: 'c:fake-clock:1',365      [VEGETABLES_RELATIVE]: 'c:fake-clock:2',366    });367    return watchmanCrawl({368      data: {369        clocks,370        files: mockFiles,371      },372      extensions: ['js', 'json'],373      ignore: pearMatcher,374      rootDir: ROOT_MOCK,375      roots: ROOTS,376    }).then(data => {377      expect(data.clocks).toEqual(378        createMap({379          [FRUITS_RELATIVE]: 'c:fake-clock:3',380          [VEGETABLES_RELATIVE]: 'c:fake-clock:4',381        }),382      );383      expect(data.files).toEqual(384        createMap({385          [KIWI_RELATIVE]: ['', 42, 0, [], null],386          [MELON_RELATIVE]: ['', 33, 0, [], null],387        }),388      );389    });390  });391  test('does not add directory filters to query when watching a ROOT', () => {392    mockResponse = {393      'list-capabilities': {394        [undefined]: {395          capabilities: ['field-content.sha1hex'],396        },397      },398      query: {399        [ROOT_MOCK]: {400          clock: 'c:fake-clock:1',401          files: [],402          is_fresh_instance: false,403          version: '4.5.0',404        },405      },406      'watch-project': {407        [FRUITS]: {408          relative_path: 'fruits',409          watch: forcePOSIXPaths(ROOT_MOCK),410        },411        [ROOT_MOCK]: {412          watch: forcePOSIXPaths(ROOT_MOCK),413        },414        [VEGETABLES]: {415          relative_path: 'vegetables',416          watch: forcePOSIXPaths(ROOT_MOCK),417        },418      },419    };420    return watchmanCrawl({421      data: {422        clocks: new Map(),423        files: new Map(),424      },425      extensions: ['js', 'json'],426      ignore: pearMatcher,427      rootDir: ROOT_MOCK,428      roots: [...ROOTS, ROOT_MOCK],429    }).then(data => {430      const client = watchman.Client.mock.instances[0];431      const calls = client.command.mock.calls;432      expect(client.on).toBeCalled();433      expect(client.on).toBeCalledWith('error', expect.any(Function));434      // First 3 calls are for ['watch-project']435      expect(calls[0][0][0]).toEqual('watch-project');436      expect(calls[1][0][0]).toEqual('watch-project');437      expect(calls[2][0][0]).toEqual('watch-project');438      // Call 4 is the query439      const query = calls[3][0];440      expect(query[0]).toEqual('query');441      expect(query[2].expression).toEqual([442        'allof',443        ['type', 'f'],444        ['anyof', ['suffix', 'js'], ['suffix', 'json']],445      ]);446      expect(query[2].fields).toEqual(['name', 'exists', 'mtime_ms']);447      expect(query[2].glob).toEqual(['**/*.js', '**/*.json']);448      expect(data.clocks).toEqual(449        createMap({450          '': 'c:fake-clock:1',451        }),452      );453      expect(data.files).toEqual(createMap({}));454      expect(client.end).toBeCalled();455    });456  });457  test('SHA-1 requested and available', async () => {458    mockResponse = {459      'list-capabilities': {460        [undefined]: {461          capabilities: ['field-content.sha1hex'],462        },463      },464      query: {465        [ROOT_MOCK]: {466          clock: 'c:fake-clock:1',467          files: [],468          is_fresh_instance: false,469          version: '4.5.0',470        },471      },472      'watch-project': {473        [ROOT_MOCK]: {474          watch: forcePOSIXPaths(ROOT_MOCK),475        },476      },477    };478    await watchmanCrawl({479      computeSha1: true,480      data: {481        clocks: new Map(),482        files: new Map(),483      },484      extensions: ['js', 'json'],485      rootDir: ROOT_MOCK,486      roots: [ROOT_MOCK],487    });488    const client = watchman.Client.mock.instances[0];489    const calls = client.command.mock.calls;490    expect(calls[0][0]).toEqual(['list-capabilities']);491    expect(calls[2][0][2].fields).toContain('content.sha1hex');492  });493  test('SHA-1 requested and NOT available', async () => {494    mockResponse = {495      'list-capabilities': {496        [undefined]: {497          capabilities: [],498        },499      },500      query: {501        [ROOT_MOCK]: {502          clock: 'c:fake-clock:1',503          files: [],504          is_fresh_instance: false,505          version: '4.5.0',506        },507      },508      'watch-project': {509        [ROOT_MOCK]: {510          watch: forcePOSIXPaths(ROOT_MOCK),511        },512      },513    };514    await watchmanCrawl({515      computeSha1: true,516      data: {517        clocks: new Map(),518        files: new Map(),519      },520      extensions: ['js', 'json'],521      rootDir: ROOT_MOCK,522      roots: [ROOT_MOCK],523    });524    const client = watchman.Client.mock.instances[0];525    const calls = client.command.mock.calls;526    expect(calls[0][0]).toEqual(['list-capabilities']);527    expect(calls[2][0][2].fields).not.toContain('content.sha1hex');528  });...

watchman.test.js

Source:watchman.test.js

...100  afterEach(() => {101    watchman.Client.mock.instances[0].command.mockClear();102  });103  test('returns a list of all files when there are no clocks', () =>104    watchmanCrawl({105      data: {106        clocks: new Map(),107        files: new Map(),108      },109      extensions: ['js', 'json'],110      ignore: pearMatcher,111      rootDir: ROOT_MOCK,112      roots: ROOTS,113    }).then(data => {114      const client = watchman.Client.mock.instances[0];115      const calls = client.command.mock.calls;116      expect(client.on).toBeCalled();117      expect(client.on).toBeCalledWith('error', expect.any(Function));118      // Call 0 and 1 are for ['watch-project']119      expect(calls[0][0][0]).toEqual('watch-project');120      expect(calls[1][0][0]).toEqual('watch-project');121      // Call 2 is the query122      const query = calls[2][0];123      expect(query[0]).toEqual('query');124      expect(query[2].expression).toEqual([125        'allof',126        ['type', 'f'],127        ['anyof', ['suffix', 'js'], ['suffix', 'json']],128        ['anyof', ['dirname', 'fruits'], ['dirname', 'vegetables']],129      ]);130      expect(query[2].fields).toEqual(['name', 'exists', 'mtime_ms']);131      expect(query[2].glob).toEqual([132        'fruits/**/*.js',133        'fruits/**/*.json',134        'vegetables/**/*.js',135        'vegetables/**/*.json',136      ]);137      expect(data.clocks).toEqual(138        createMap({139          '': 'c:fake-clock:1',140        }),141      );142      expect(data.files).toEqual(mockFiles);143      expect(client.end).toBeCalled();144    }));145  test('applies the mapper when needed', () => {146    mockResponse = {147      'list-capabilities': {148        [undefined]: {149          capabilities: ['field-content.sha1hex'],150        },151      },152      query: {153        [ROOT_MOCK]: {154          clock: 'c:fake-clock:1',155          files: [156            {157              exists: true,158              mtime_ms: {toNumber: () => 33},159              name: 'vegetables/durian.zip',160            },161          ],162          is_fresh_instance: true,163          version: '4.5.0',164        },165      },166      'watch-project': WATCH_PROJECT_MOCK,167    };168    return watchmanCrawl({169      data: {170        clocks: new Map(),171        files: new Map(),172      },173      extensions: ['js', 'json', 'zip'],174      ignore: pearMatcher,175      mapper: n =>176        n.endsWith('.zip')177          ? [path.join(n, 'foo.1.js'), path.join(n, 'foo.2.js')]178          : null,179      rootDir: ROOT_MOCK,180      roots: ROOTS,181    }).then(data => {182      expect(data.files).toEqual(183        createMap({184          [path.join(DURIAN_RELATIVE, 'foo.1.js')]: ['', 33, 0, [], null],185          [path.join(DURIAN_RELATIVE, 'foo.2.js')]: ['', 33, 0, [], null],186        }),187      );188    });189  });190  test('updates the file object when the clock is given', () => {191    mockResponse = {192      'list-capabilities': {193        [undefined]: {194          capabilities: ['field-content.sha1hex'],195        },196      },197      query: {198        [ROOT_MOCK]: {199          clock: 'c:fake-clock:2',200          files: [201            {202              exists: true,203              mtime_ms: {toNumber: () => 42},204              name: 'fruits/kiwi.js',205            },206            {207              exists: false,208              mtime_ms: null,209              name: 'fruits/tomato.js',210            },211          ],212          is_fresh_instance: false,213          version: '4.5.0',214        },215      },216      'watch-project': WATCH_PROJECT_MOCK,217    };218    const clocks = createMap({219      '': 'c:fake-clock:1',220    });221    return watchmanCrawl({222      data: {223        clocks,224        files: mockFiles,225      },226      extensions: ['js', 'json'],227      ignore: pearMatcher,228      rootDir: ROOT_MOCK,229      roots: ROOTS,230    }).then(data => {231      // The object was reused.232      expect(data.files).toBe(mockFiles);233      expect(data.clocks).toEqual(234        createMap({235          '': 'c:fake-clock:2',236        }),237      );238      expect(data.files).toEqual(239        createMap({240          [KIWI_RELATIVE]: ['', 42, 0, [], null],241          [MELON_RELATIVE]: ['', 33, 0, [], null],242          [STRAWBERRY_RELATIVE]: ['', 30, 0, [], null],243        }),244      );245    });246  });247  test('resets the file object when watchman is restarted', () => {248    const mockTomatoSha1 = '321f6b7e8bf7f29aab89c5e41a555b1b0baa41a9';249    mockResponse = {250      'list-capabilities': {251        [undefined]: {252          capabilities: ['field-content.sha1hex'],253        },254      },255      query: {256        [ROOT_MOCK]: {257          clock: 'c:fake-clock:3',258          files: [259            {260              exists: true,261              mtime_ms: {toNumber: () => 42},262              name: 'fruits/kiwi.js',263            },264            {265              exists: true,266              mtime_ms: {toNumber: () => 41},267              name: 'fruits/banana.js',268            },269            {270              'content.sha1hex': mockTomatoSha1,271              exists: true,272              mtime_ms: {toNumber: () => 76},273              name: 'fruits/tomato.js',274            },275          ],276          is_fresh_instance: true,277          version: '4.5.0',278        },279      },280      'watch-project': WATCH_PROJECT_MOCK,281    };282    const mockBananaMetadata = ['Banana', 41, 1, ['Raspberry'], null];283    mockFiles.set(BANANA_RELATIVE, mockBananaMetadata);284    const mockTomatoMetadata = ['Tomato', 31, 1, [], mockTomatoSha1];285    mockFiles.set(TOMATO_RELATIVE, mockTomatoMetadata);286    const clocks = createMap({287      '': 'c:fake-clock:1',288    });289    return watchmanCrawl({290      data: {291        clocks,292        files: mockFiles,293      },294      extensions: ['js', 'json'],295      ignore: pearMatcher,296      rootDir: ROOT_MOCK,297      roots: ROOTS,298    }).then(data => {299      // The file object was *not* reused.300      expect(data.files).not.toBe(mockFiles);301      expect(data.clocks).toEqual(302        createMap({303          '': 'c:fake-clock:3',304        }),305      );306      // /fruits/strawberry.js was removed from the file list.307      expect(data.files).toEqual(308        createMap({309          [BANANA_RELATIVE]: mockBananaMetadata,310          [KIWI_RELATIVE]: ['', 42, 0, [], null],311          [TOMATO_RELATIVE]: ['Tomato', 76, 1, [], mockTomatoSha1],312        }),313      );314      // Even though the file list was reset, old file objects are still reused315      // if no changes have been made316      expect(data.files.get(BANANA_RELATIVE)).toBe(mockBananaMetadata);317      // Old file objects are not reused if they have a different mtime318      expect(data.files.get(TOMATO_RELATIVE)).not.toBe(mockTomatoMetadata);319    });320  });321  test('properly resets the file map when only one watcher is reset', () => {322    mockResponse = {323      'list-capabilities': {324        [undefined]: {325          capabilities: ['field-content.sha1hex'],326        },327      },328      query: {329        [FRUITS]: {330          clock: 'c:fake-clock:3',331          files: [332            {333              exists: true,334              mtime_ms: {toNumber: () => 42},335              name: 'kiwi.js',336            },337          ],338          is_fresh_instance: false,339          version: '4.5.0',340        },341        [VEGETABLES]: {342          clock: 'c:fake-clock:4',343          files: [344            {345              exists: true,346              mtime_ms: {toNumber: () => 33},347              name: 'melon.json',348            },349          ],350          is_fresh_instance: true,351          version: '4.5.0',352        },353      },354      'watch-project': {355        [FRUITS]: {356          watch: forcePOSIXPaths(FRUITS),357        },358        [VEGETABLES]: {359          watch: forcePOSIXPaths(VEGETABLES),360        },361      },362    };363    const clocks = createMap({364      [FRUITS_RELATIVE]: 'c:fake-clock:1',365      [VEGETABLES_RELATIVE]: 'c:fake-clock:2',366    });367    return watchmanCrawl({368      data: {369        clocks,370        files: mockFiles,371      },372      extensions: ['js', 'json'],373      ignore: pearMatcher,374      rootDir: ROOT_MOCK,375      roots: ROOTS,376    }).then(data => {377      expect(data.clocks).toEqual(378        createMap({379          [FRUITS_RELATIVE]: 'c:fake-clock:3',380          [VEGETABLES_RELATIVE]: 'c:fake-clock:4',381        }),382      );383      expect(data.files).toEqual(384        createMap({385          [KIWI_RELATIVE]: ['', 42, 0, [], null],386          [MELON_RELATIVE]: ['', 33, 0, [], null],387        }),388      );389    });390  });391  test('does not add directory filters to query when watching a ROOT', () => {392    mockResponse = {393      'list-capabilities': {394        [undefined]: {395          capabilities: ['field-content.sha1hex'],396        },397      },398      query: {399        [ROOT_MOCK]: {400          clock: 'c:fake-clock:1',401          files: [],402          is_fresh_instance: false,403          version: '4.5.0',404        },405      },406      'watch-project': {407        [FRUITS]: {408          relative_path: 'fruits',409          watch: forcePOSIXPaths(ROOT_MOCK),410        },411        [ROOT_MOCK]: {412          watch: forcePOSIXPaths(ROOT_MOCK),413        },414        [VEGETABLES]: {415          relative_path: 'vegetables',416          watch: forcePOSIXPaths(ROOT_MOCK),417        },418      },419    };420    return watchmanCrawl({421      data: {422        clocks: new Map(),423        files: new Map(),424      },425      extensions: ['js', 'json'],426      ignore: pearMatcher,427      rootDir: ROOT_MOCK,428      roots: [...ROOTS, ROOT_MOCK],429    }).then(data => {430      const client = watchman.Client.mock.instances[0];431      const calls = client.command.mock.calls;432      expect(client.on).toBeCalled();433      expect(client.on).toBeCalledWith('error', expect.any(Function));434      // First 3 calls are for ['watch-project']435      expect(calls[0][0][0]).toEqual('watch-project');436      expect(calls[1][0][0]).toEqual('watch-project');437      expect(calls[2][0][0]).toEqual('watch-project');438      // Call 4 is the query439      const query = calls[3][0];440      expect(query[0]).toEqual('query');441      expect(query[2].expression).toEqual([442        'allof',443        ['type', 'f'],444        ['anyof', ['suffix', 'js'], ['suffix', 'json']],445      ]);446      expect(query[2].fields).toEqual(['name', 'exists', 'mtime_ms']);447      expect(query[2].glob).toEqual(['**/*.js', '**/*.json']);448      expect(data.clocks).toEqual(449        createMap({450          '': 'c:fake-clock:1',451        }),452      );453      expect(data.files).toEqual(createMap({}));454      expect(client.end).toBeCalled();455    });456  });457  test('SHA-1 requested and available', async () => {458    mockResponse = {459      'list-capabilities': {460        [undefined]: {461          capabilities: ['field-content.sha1hex'],462        },463      },464      query: {465        [ROOT_MOCK]: {466          clock: 'c:fake-clock:1',467          files: [],468          is_fresh_instance: false,469          version: '4.5.0',470        },471      },472      'watch-project': {473        [ROOT_MOCK]: {474          watch: forcePOSIXPaths(ROOT_MOCK),475        },476      },477    };478    await watchmanCrawl({479      computeSha1: true,480      data: {481        clocks: new Map(),482        files: new Map(),483      },484      extensions: ['js', 'json'],485      rootDir: ROOT_MOCK,486      roots: [ROOT_MOCK],487    });488    const client = watchman.Client.mock.instances[0];489    const calls = client.command.mock.calls;490    expect(calls[0][0]).toEqual(['list-capabilities']);491    expect(calls[2][0][2].fields).toContain('content.sha1hex');492  });493  test('SHA-1 requested and NOT available', async () => {494    mockResponse = {495      'list-capabilities': {496        [undefined]: {497          capabilities: [],498        },499      },500      query: {501        [ROOT_MOCK]: {502          clock: 'c:fake-clock:1',503          files: [],504          is_fresh_instance: false,505          version: '4.5.0',506        },507      },508      'watch-project': {509        [ROOT_MOCK]: {510          watch: forcePOSIXPaths(ROOT_MOCK),511        },512      },513    };514    await watchmanCrawl({515      computeSha1: true,516      data: {517        clocks: new Map(),518        files: new Map(),519      },520      extensions: ['js', 'json'],521      rootDir: ROOT_MOCK,522      roots: [ROOT_MOCK],523    });524    const client = watchman.Client.mock.instances[0];525    const calls = client.command.mock.calls;526    expect(calls[0][0]).toEqual(['list-capabilities']);527    expect(calls[2][0][2].fields).not.toContain('content.sha1hex');528  });...

watchman-test.js

Source:watchman-test.js

...77    const watchman = require('fb-watchman');78    const path = require('../../fastpath');79    const originalPathRelative = path.relative;80    path.relative = jest.fn(from => '/root-mock' + from);81    return watchmanCrawl(82      ['/fruits', '/vegetables'],83      ['js', 'json'],84      pearMatcher,85      {86        clocks: Object.create(null),87        files: Object.create(null),88      }89    ).then(data => {90      const client = watchman.Client.mock.instances[0];91      const calls = client.command.mock.calls;92      expect(client.on).toBeCalled();93      expect(client.on).toBeCalledWith('error', jasmine.any(Function));94      // Call 0 and 1 are for ['watch-project']95      expect(calls[0][0][0]).toEqual('watch-project');96      expect(calls[1][0][0]).toEqual('watch-project');97      // Calls 2 and 3 are queries98      const query1 = calls[2][0];99      const query2 = calls[3][0];100      expect(query1[0]).toEqual('query');101      expect(query2[0]).toEqual('query');102      expect(query1[2].expression).toEqual([103        'allof',104        ['type', 'f'],105        ['anyof', ['suffix', 'js'], ['suffix', 'json']],106        ['anyof', ['dirname', '/root-mock/fruits']],107      ]);108      expect(query2[2].expression).toEqual([109        'allof',110        ['type', 'f'],111        ['anyof', ['suffix', 'js'], ['suffix', 'json']],112        ['anyof', ['dirname', '/root-mock/vegetables']],113      ]);114      expect(query1[2].fields).toEqual(['name', 'exists', 'mtime_ms']);115      expect(query2[2].fields).toEqual(['name', 'exists', 'mtime_ms']);116      expect(query1[2].suffix).toEqual(['js', 'json']);117      expect(query2[2].suffix).toEqual(['js', 'json']);118      expect(data.clocks).toEqual({119        '/fruits': 'c:fake-clock:1',120        '/vegetables': 'c:fake-clock:2',121      });122      expect(data.files).toEqual(mockFiles);123      path.relative = originalPathRelative;124      expect(client.end).toBeCalled();125    });126  });127  it('updates the file object when the clock is given', () => {128    mockResponse = {129      '/fruits': {130        version: '4.5.0',131        clock: 'c:fake-clock:3',132        is_fresh_instance: false,133        files: [134          {135            name: 'kiwi.js',136            exists: true,137            mtime_ms: {toNumber: () => 42},138          },139          {140            name: 'tomato.js',141            exists: false,142            mtime_ms: null,143          },144        ],145      },146      '/vegetables': {147        version: '4.5.0',148        clock: 'c:fake-clock:4',149        files: [],150      },151    };152    const clocks = Object.assign(Object.create(null), {153      '/fruits': 'c:fake-clock:1',154      '/vegetables': 'c:fake-clock:2',155    });156    return watchmanCrawl(157      ['/fruits', '/vegetables'],158      ['js', 'json'],159      pearMatcher,160      {161        clocks,162        files: mockFiles,163      }164    ).then(data => {165      // The object was reused.166      expect(data.files).toBe(mockFiles);167      expect(data.clocks).toEqual({168        '/fruits': 'c:fake-clock:3',169        '/vegetables': 'c:fake-clock:4',170      });171      expect(data.files).toEqual({172        '/fruits/strawberry.js': ['', 30, 0, []],173        '/fruits/kiwi.js': ['', 42, 0, []],174        '/vegetables/melon.json': ['', 33, 0, []],175      });176    });177  });178  it('resets the file object when watchman is restarted', () => {179    mockResponse = {180      '/fruits': {181        version: '4.5.0',182        clock: 'c:fake-clock:5',183        is_fresh_instance: true,184        files: [185          {186            name: 'kiwi.js',187            exists: true,188            mtime_ms: {toNumber: () => 42},189          },190          {191            name: 'banana.js',192            exists: true,193            mtime_ms: {toNumber: () => 41},194          },195          {196            name: 'tomato.js',197            exists: true,198            mtime_ms: {toNumber: () => 31},199          },200        ],201      },202      '/vegetables': {203        version: '4.5.0',204        clock: 'c:fake-clock:6',205        is_fresh_instance: true,206        files: [],207      },208    };209    const mockMetadata = ['Banana', 41, 1, ['Raspberry']];210    mockFiles['/fruits/banana.js'] = mockMetadata;211    const clocks = Object.assign(Object.create(null), {212      '/fruits': 'c:fake-clock:1',213      '/vegetables': 'c:fake-clock:2',214    });215    return watchmanCrawl(216      ['/fruits', '/vegetables'],217      ['js', 'json'],218      pearMatcher,219      {220        clocks,221        files: mockFiles,222      }223    ).then(data => {224      // The file object was *not* reused.225      expect(data.files).not.toBe(mockFiles);226      expect(data.clocks).toEqual({227        '/fruits': 'c:fake-clock:5',228        '/vegetables': 'c:fake-clock:6',229      });230      // /fruits/strawberry.js was removed from the file list.231      expect(data.files).toEqual({232        '/fruits/kiwi.js': ['', 42, 0, []],233        '/fruits/banana.js': mockMetadata,234        '/fruits/tomato.js': mockFiles['/fruits/tomato.js'],235      });236      // Even though the file list was reset, old file objects are still reused237      // if no changes have been made.238      expect(data.files['/fruits/banana.js']).toBe(mockMetadata);239      expect(data.files['/fruits/tomato.js'])240        .toBe(mockFiles['/fruits/tomato.js']);241    });242  });243  it('properly resets the file map when only one watcher is reset', () => {244    mockResponse = {245      '/fruits': {246        version: '4.5.0',247        clock: 'c:fake-clock:3',248        is_fresh_instance: false,249        files: [250          {251            name: 'kiwi.js',252            exists: true,253            mtime_ms: {toNumber: () => 42},254          },255        ],256      },257      '/vegetables': {258        version: '4.5.0',259        clock: 'c:fake-clock:4',260        is_fresh_instance: true,261        files: [262          {263            name: 'melon.json',264            exists: true,265            mtime_ms: {toNumber: () => 33},266          },267        ],268      },269    };270    const clocks = Object.assign(Object.create(null), {271      '/fruits': 'c:fake-clock:1',272      '/vegetables': 'c:fake-clock:2',273    });274    return watchmanCrawl(275      ['/fruits', '/vegetables'],276      ['js', 'json'],277      pearMatcher,278      {279        clocks,280        files: mockFiles,281      }282    ).then(data => {283      expect(data.clocks).toEqual({284        '/fruits': 'c:fake-clock:3',285        '/vegetables': 'c:fake-clock:4',286      });287      expect(data.files).toEqual({288        '/fruits/kiwi.js': ['', 42, 0, []],...

index.js

Source:index.js

...3const watchmanCrawl = require('./watchman');4function crawl(roots, options) {5  const {fileWatcher} = options;6  return (fileWatcher ? fileWatcher.isWatchman() : Promise.resolve(false)).then(7    isWatchman => isWatchman ? watchmanCrawl(roots, options) : nodeCrawl(roots, options)8  );9}...

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