CHANGELOG.md

master

jest 15.0.0

• See https://facebook.github.io/jest/blog/2016/09/01/jest-15.html
• Jest by default now also recognizes files ending in .spec.js and .test.js as test files.
• Completely replaced most Jasmine matchers with new Jest matchers.
• Rewrote Jest's CLI output for test failures and summaries.
• Added --env option to override the default test environment.
• Disabled automocking, fake timers and resetting the module registry by default.
• Added --watchAll, made --watch interactive and added the ability to update snapshots and select test patterns in watch mode.
• Jest uses verbose mode when running a single test file.
• Console messages are now buffered and printed along with the test results.
• Fix testEnvironment resolution to prefer jest-environment-{name} instead of {name} only. This prevents a module colision when using jsdom as test environment.
• moduleNameMapper now uses a resolution algorithm.
• Improved performance for small test runs.
• Improved API documentation.
• Jest now works properly with directories that have special characters in them.
• Improvements to Jest's own test infra by merging integration and unit tests. Code coverage is now collected for Jest.
• Added global.global to the node environment.
• Fixed babel-jest-plugin-hoist issues with functions called mock.
• Improved jest-react-native preset with mocks for ListView, TextInput, ActivityIndicator and ScrollView.
• Added collectCoverageFrom to collect code coverage from untested files.
• Rewritten code coverage support.

jest 14.1.0

• Changed Jest's default cache directory.
• Fixed jest-react-native for react 15.3.0.
• Updated react and react-native example to use react-test-renderer.
• Started to refactor code coverage.

jest 14.0.2

• babel-jest bugfix.

jest 14.0.1

• babel-jest can now be used to compose a transformer.
• Updated snapshot instructions to run jest -u or npm test -- -u.
• Fixed config cli option to enable JSON objects as configuration.
• Updated printing of preset path in the CLI.

jest 14.0.0

• Official release of snapshot tests.
• Started to replace Jasmine matchers with Jest matchers: toBe, toBeFalsy, toBeTruthy, toBeNaN, toBe{Greater,Less}Than{,OrEqual}, toBeNull, toBeDefined, toBeUndefined, toContain, toMatch, toBeCloseTo were rewritten.
• Rewrite of Jest's reporters.
• Experimental react-native support.
• Removed Jasmine 1 support from Jest.
• Transform caching improvements.

jest 13.2.0

• Snapshot bugfixes.
• Timer bugfixes.

jest 13.1.0

• Added test global function as an alias for it.
• Added coveragePathIgnorePatterns to the config.
• Fixed printing of "JSX objects" in snapshots.
• Fixes for --verbose option and top level it calls.
• Extended the node environment with more globals.
• testcheck now needs to be required explicitly through require('jest-check').
• Added jest.deepUnmock.
• Fail test suite if it does not contain any tests.

jest 13.0.0

• Added duration of individual tests in verbose mode.
• Added a browser config option to properly resolve npm packages with a browser field in package.json if you are writing tests for client side apps
• Added jest-repl.
• Split up jest-cli into jest-runtime and jest-config.
• Added a notification plugin that shows a test run notification using --notify.
• Refactored TestRunner into SearchSource and improved the "no tests found" message.
• Added jest.isMockFunction(jest.fn()) to test for mock functions.
• Improved test reporter printing and added a test failure summary when running many tests.
  • Add support for property testing via testcheck-js.
• Added a webpack tutorial.
• Added support for virtual mocks through jest.mock('Module', implementation, {virtual: true}).
• Added snapshot functionality through toMatchSnapshot().
• Redesigned website.

jest-cli 12.1.1

• Windows stability fixes.
• Mock module resolution fixes.
• Remove test files from code coverage.

jest-cli 12.1.0

• Jest is now also published in the jest package on npm.
• Added testRegex to match for tests outside of specific folders. Deprecated both testDirectoryName and testFileExtensions.
• it can now return a Promise for async testing. pit was deprecated.
• Added jest-resolve as a standalone package based on the Facebook module resolution algorithm.
• Added jest-changed-files as a standalone package to detect changed files in a git or hg repo.
• Added --setupTestFrameworkFile to cli.
• Added support for coverage thresholds. See http://facebook.github.io/jest/docs/api.html#coveragethreshold-object.
• Updated to jsdom 9.0.
• Updated and improved stack trace reporting.
• Added module.filename and removed the invalid module.__filename field.
• Further improved the lastCalledWith and toBeCalledWith custom matchers. They now print the most recent calls.
• Fixed jest-haste-map on continuous integration systems.
• Fixes for hg/git integration.
• Added a re-try for the watchman crawler.

jest-cli 12.0.2

• Bug fixes when running a single test file and for scoped package names.

jest-cli 12.0.1

• Added custom equality matchers for Map/Set and iterables.
• Bug fixes

jest-cli 12.0.0

• Reimplemented node-haste as jest-haste-map: jestjs#896
• Fixes for the upcoming release of nodejs 6.
• Removed global mock caching which caused negative side-effects on test runs.
• Updated Jasmine from 2.3.4 to 2.4.1.
• Fixed our Jasmine fork to work better with Object.create(null).
• Added a --silent flag to silence console messages during a test run.
• Run a test file directly if a path is passed as an argument to Jest.
• Added support for the undocumented nodejs feature module.paths.

jest-cli 11.0.2

• Fixed jest -o error when Mercurial isn't installed on the system
• Fixed Jasmine failure message when expected values were mutated after tests.

jest-cli 11.0.1, babel-jest 11.0.1

• Added support for Mercurial repositories when using jest -o
• Added mockImplementationOnce API to jest.fn().

jest-cli 11.0.0, babel-jest 11.0.0 (pre-releases 0.9 to 0.10)

• New implementation of node-haste and rewrite of internal module loading and resolution. Fixed both startup and runtime performance. #599
• Jasmine 2 is now the default test runner. To keep using Jasmine 1, put testRunner: "jasmine1" into your configuration.
• Added jest-util, jest-mock, jest-jasmine1, jest-jasmine2, jest-environment-node, jest-environment-jsdom packages.
• Added babel-jest-preset and babel-jest as packages. babel-jest is now being auto-detected.
• Added babel-plugin-jest-hoist which hoists jest.unmock, jest.mock and the new jest.enableAutomock and jest.disableAutomock API.
• Improved babel-jest integration and react-native testing.
• Improved code coverage reporting when using babel-jest.
• Added the jest.mock('moduleName', moduleFactory) feature. jest.mock now gets hoisted by default. jest.doMock was added to explicitly mock a module without the hoisting feature of babel-jest.
• Updated jsdom to 8.3.x.
• Improved responsiveness of the system while using --watch.
• Clear the terminal window when using --watch.
• By default, --watch will now only runs tests related to changed files. --watch=all can be used to run all tests on file system changes.
• Debounce --watch re-runs to not trigger test runs during a branch switch in version control.
• Added jest.fn() and jest.fn(implementation) as convenient shorcuts for jest.genMockFunction() and jest.genMockFunction().mockImplementation().
• Added an automock option to turn off automocking globally.
• Added a "no tests found" message if no tests can be found.
• Jest sets process.NODE_ENV to test unless otherwise specified.
• Fixed moduleNameMapper config option when used with paths.
• Fixed an error with Jasmine 2 and tests that throw 'string errors'.
• Fixed issues with unmocking symlinked module names.
• Fixed mocking of boolean values.
• Fixed mocking of fields that start with an underscore ("private fields").
• Fixed unmocking behavior with npm3.
• Fixed and improved --onlyChanged option.
• Fixed support for running Jest as a git submodule.
• Improved verbose logger output
• Fixed test runtime error reporting and stack traces.
• Improved toBeCalled Jasmine 2 custom matcher messages.
• Improved error reporting when a syntax error occurs.
• Renamed HasteModuleLoader to Runtime.
• Jest now properly reports pending tests disabled with xit and xdescribe.
• Removed preprocessCachingDisabled config option.
• Added a testEnvironment option to customize the sandbox environment.
• Added support for @scoped/name npm packages.
• Added an integration test runner for Jest that runs all tests for examples and packages.

0.8.2

• Performance improvements.
• jest now uses chalk instead of its own colors implementation.

0.8.1

• --bail now reports with the proper error code.
• Fixed loading of the setup file when using jasmine2.
• Updated jsdom to 7.2.0.

0.8.0

• Added optional support for jasmine2 through the testRunner config option.
• Fixed mocking support for Map, WeakMap and Set.
• node was added to the defaults in moduleFileExtensions.
• Updated the list of node core modules that are properly being recognized by the module loader.

0.7.1

• Correctly map process.on into jsdom environments, fixes a bug introduced in jest 0.7.0.

0.7.0

• Fixed a memory leak with test contexts. Jest now properly cleans up test environments after each test. Added --logHeapUsage to log memory usage after each test. Note: this is option is meant for debugging memory leaks and might significantly slow down your test run.
• Removed mock-modules, node-haste and mocks virtual modules. This is a breaking change of undocumented public API. Usage of this API can safely be automatically updated through an automated codemod:
• Example: http://astexplorer.net/#/zrybZ6UvRA
• Codemod: https://github.com/cpojer/js-codemod/blob/master/transforms/jest-update.js
• jscodeshift: https://github.com/facebook/jscodeshift
• Removed navigator.onLine and mockSetReadOnlyProperty from the global jsdom environment. Use window.navigator.onLine = true; in your test setup and Object.defineProperty instead.

0.6.1

• Updated jsdom to 7.0.2.
• Use the current working directory as root when passing a jest config from the command line.
• Updated the React examples and getting started guide
• Modules now receive a module.parent field so unmocked modules don't assume they are run directly any longer.

0.6.0

• jest now reports the number of tests that were run instead of the number of test files.
• Added a --json option to print test results as JSON.
• Changed the preprocessor API. A preprocessor now receives the script, file and config. The cache key function receives the script, file and stringified config to be able to create consistent hashes.
• Removed node-worker-pool in favor of node-worker-farm (#540).
• toEqual now also checks the internal class name of an object. This fixes invalid tests like expect([]).toEqual({}) which were previously passing.
• Added the option to provide map modules to stub modules by providing the moduleNameMapper config option.
• Allow to specify a custom testRunner in the configuration (#531).
• Added a --no-cache option to make it easier to debug preprocessor scripts.
• Fix code coverage on windows (#499).

0.5.6

• Cache test run performance and run slowest tests first to maximize worker utilization
• Update to jsdom 6.5.0

0.5.5

• Improve failure stack traces.
• Fix syntax error reporting.
• Add --watch option (#472).

0.5.2

• Fixed a bug with syntax errors in test files (#487).
• Fixed chmod error for preprocess-cache (#491).
• Support for the upcoming node 4.0 release (#490, #489).

0.5.1

• Upgraded node-worker-pool to 3.0.0, use the native Promise implementation.
• testURL can be used to set the location of the jsdom environment.
• Updated all of jest's dependencies, now using jsdom 6.3.
• jest now uses the native Promise implementation.
• Fixed a bug when passed an empty testPathIgnorePatterns.
• Moved preprocessor cache into the haste cache directory.

0.5.0

• Added --noStackTrace option to disable stack traces.
• Jest now only works with iojs v2 and up. If you are still using node we recommend upgrading to iojs or keep using jest 0.4.0.
• Upgraded to jsdom 6.1.0 and removed all the custom jsdom overwrites.

<=0.4.0

• See commit history for changes in previous versions of jest.