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@SimenB SimenB released this 16 Aug 10:38
· 5530 commits to main since this release
v18.0.0
fc02b01

See https://jestjs.io/blog/2016/12/15/2016-in-jest.html

  • The testResultsProcessor function is now required to return the modified results.
  • Removed pit and mockImpl. Use it or mockImplementation instead.
  • Fixed re-running tests when --bail is used together with --watch.
  • pretty-format is now merged into Jest.
  • require('v8') now works properly in a test context.
  • Jest now clears the entire scrollback in watch mode.
  • Added expect.any, expect.anything, expect.objectContaining, expect.arrayContaining, expect.stringMatching.
  • Properly resolve snapshotSerializers, setupFiles, transform, testRunner and testResultsProcessor instead of using path.resolve.
  • --testResultsProcessor is now exposed through the cli.
  • Renamed --jsonOutputFile to --outputFile.
  • Added jest-editor-support for vscode and Nuclide integration.
  • Fixed test.concurrent unhandled promise rejections.
  • The Jest website is now auto-deployed when merging into master.
  • Updated testRegex to include test.js and spec.js files.
  • Fixes for babel-plugin-jest-hoist when using jest.mock with three arguments.
  • The JSON global in jest-environment-node now comes from the vm context instead of the parent context.
  • Jest does not print stack traces from babel any longer.
  • Fake timers are reset when FakeTimers.useTimers() is called.
  • Usage of Jest in watch mode can be hidden through JEST_HIDE_USAGE.
  • Added expect.assertions(number) which will ensure that a specified amount of assertions is made in one test.
  • Added .toMatchSnapshot(?string) feature to give snapshots a name.
  • Escape regex in snapshots.
  • jest-react-native was deprecated and now forwards react-native.
  • Added .toMatchObject matcher.
  • Further improve printing of large objects.
  • Fixed NaN% Failed in the OS notification when using --notify.
  • The first test run without cached timings will now use separate processes instead of running in band.
  • Added .toHaveProperty matcher.
  • Fixed Map/Set comparisons.
  • test.concurrent now works with --testNamePattern.
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