Jest v23.0.0 Release Notes
-
๐ Features
[expect]
ExposegetObjectSubset
,iterableEquality
, andsubsetEquality
(#6210)[jest-snapshot]
Add snapshot property matchers (#6210)- ๐
[jest-config]
Support jest-preset.js files within Node modules (#6185) - โ
[jest-cli]
Add--detectOpenHandles
flag which enables Jest to potentially track down handles keeping it open after tests are complete. (#6130) - โ
[jest-jasmine2]
Add data driven testing based onjest-each
(#6102) [jest-matcher-utils]
Change "suggest to equal" message to be more advisory (#6103)[jest-message-util]
Don't ignore messages withvendor
anymore (#6117)[jest-validate]
Get rid ofjest-config
dependency (#6067)- ๐
[jest-validate]
Adds option to injectdeprecationEntries
(#6067) - ๐ฅ
[jest-snapshot]
[BREAKING] Concatenate name of test, optional snapshot name and count (#6015) - ๐
[jest-runtime]
Allow for transform plugins to skip the definition process method if createTransformer method was defined. (#5999) [expect]
Add stack trace for async errors (#6008)[jest-jasmine2]
Add stack trace for timeouts (#6008)[jest-jasmine2]
Add stack trace for thrown non-Error
s (#6008)[jest-runtime]
Prevent modules from marking themselves as their own parent (#5235)- ๐คก
[jest-mock]
Add support for auto-mocking generator functions (#5983) - ๐
[expect]
Add support for async matchers (#5919) [expect]
Suggest toContainEqual (#5948)- 0๏ธโฃ
[jest-config]
Export Jest's default options (#5948) - ๐
[jest-editor-support]
Movecoverage
toProjectWorkspace.collectCoverage
(#5929) - ๐
[jest-editor-support]
Addcoverage
option to runner (#5836) - ๐
[jest-haste-map]
Support extracting dynamicimport
s (#5883) - ๐คก
[expect]
Improve output format for mismatchedArgs in mock/spy calls. (#5846) - โ
[jest-cli]
Add support for using--coverage
in combination with watch mode,--onlyChanged
,--findRelatedTests
and more (#5601) - ๐ฅ
[jest-jasmine2]
[BREAKING] Adds error throwing and descriptive errors toit
/test
for invalid arguments.[jest-circus]
Adds error throwing and descriptive errors toit
/test
for invalid arguments (#5558) [jest-matcher-utils]
AddisNot
option tomatcherHint
function (#5512)[jest-config]
Add<rootDir>
to runtime files not found error report (#5693)[expect]
Make toThrow matcher pass only if Error object is returned from promises (#5670)[expect]
Add isError to utils (#5670)[expect]
Add inverse matchers (expect.not.arrayContaining
, etc., #5517)[expect]
expect.extend
now also extends asymmetric matchers (#5503)- โก๏ธ
[jest-mock]
UpdatespyOnProperty
to support spying on the prototype chain (#5753) - ๐คก
[jest-mock]
Add tracking of return values in themock
property (#5752) - ๐คก
[jest-mock]
Add tracking of thrown errors in themock
property (#5764) [expect]
Add nthCalledWith spy matcher (#5605)[jest-cli]
AddisSerial
property that runners can expose to specify that they can not run in parallel (#5706)[expect]
Add.toBeCalledTimes
andtoHaveBeenNthCalledWith
aliases (#5826)[jest-cli]
Interactive Snapshot Mode improvements (#5864)- ๐
[jest-editor-support]
Addno-color
option to runner (#5909) - ๐จ
[jest-jasmine2]
Pretty-print non-Error object errors (#5980) [jest-message-util]
Include column in stack frames (#5889)[expect]
Introduce toStrictEqual (#6032)[expect]
Add return matchers (#5879)[jest-cli]
Improve snapshot summaries (#6181)- ๐คก
[expect]
Include custom mock names in error messages (#6199) - ๐
[jest-diff]
Support returning diff from oneline strings (#6221) [expect]
Improve return matchers (#6172)- ๐
[jest-cli]
Overhaul watch plugin hooks names (#6249) - ๐ฅ
[jest-mock]
[BREAKING] Include tracked call results in serialized mock (#6244)
๐ Fixes
- ๐
[jest-cli]
Fix stdin encoding to utf8 for watch plugins. (#6253) - ๐
[expect]
Better detection of DOM Nodes for equality (#6246) - โ
[jest-cli]
Fix misleading action description for F key when in "only failed tests" mode. (#6167) - ๐ท
[jest-worker]
Stick calls to workers before processing them (#6073) - ๐
[babel-plugin-jest-hoist]
Allow usingconsole
global variable (#6075) - ๐
[jest-jasmine2]
Always remove node core message from assert stack traces (#6055) - โ
[expect]
Add stack trace whenexpect.assertions
andexpect.hasAssertions
causes test failures. (#5997) - โ
[jest-runtime]
Throw a more useful error when trying to require modules after the test environment is torn down (#5888) - ๐ฅ
[jest-mock]
[BREAKING] Replace timestamps withinvocationCallOrder
(#5867) - ๐
[jest-jasmine2]
Installsourcemap-support
into normal runtime to catch runtime errors (#5945) [jest-jasmine2]
Added assertion error handling insideafterAll hook
(#5884)- ๐
[jest-cli]
Remove the notifier actions in case of failure when not in watch mode. (#5861) - ๐คก
[jest-mock]
Extend .toHaveBeenCalled return message with outcome (#5951) - ๐ท
[jest-runner]
Assignprocess.env.JEST_WORKER_ID="1"
when in runInBand mode (#5860) [jest-cli]
Add descriptive error message when trying to useglobalSetup
/globalTeardown
file that doesn't export a function. (#5835)[expect]
Do not rely oninstanceof RegExp
, since it will not work for RegExps created inside of a different VM (#5729)- โก๏ธ
[jest-resolve]
Update node module resolution algorithm to correctly handle symlinked paths (#5085) - โก๏ธ
[jest-editor-support]
UpdateSettings
to use spawn in shell option (#5658) [jest-cli]
Improve the error message when 2 projects resolve to the same config (#5674)- ๐
[jest-runtime]
remove retainLines from coverage instrumentation (#5692) - โก๏ธ
[jest-cli]
Fix update snapshot issue when using watchAll (#5696) [expect]
Fix rejects.not matcher (#5670)- โ
[jest-runtime]
Prevent Babel warnings on large files (#5702) - ๐คก
[jest-mock]
PreventmockRejectedValue
from causing unhandled rejection (#5720) - ๐
[pretty-format]
Handle React fragments better (#5816) [pretty-format]
Handle formatting ofReact.forwardRef
andContext
components (#6093)[jest-cli]
Switch collectCoverageFrom back to a string (#5914)- ๐
[jest-regex-util]
Fix handling regex symbols in tests path on Windows (#5941) - ๐คก
[jest-util]
Fix handling of NaN/Infinity in mock timer delay (#5966) - ๐ฆ
[jest-resolve]
Generalise test for package main entries equivalent to ".". (#5968) - ๐ง
[jest-config]
Ensure that custom resolvers are used when resolving the configuration (#5976) - ๐
[website]
Fix website docs (#5853) [expect]
Fix isEqual Set and Map to compare object values and keys regardless of order (#6150)- ๐ฅ
[pretty-format]
[BREAKING] Remove undefined props from React elements (#6162) - ๐ฆ
[jest-haste-map]
Properly resolve mocked node modules without package.json defined (#6232)
๐ง Chore & Maintenance
- ๐
[jest-runner]
Move sourcemap installation fromjest-jasmine2
tojest-runner
(#6176) [jest-cli]
Use yargs's built-inversion
instead of rolling our own (#6215)- ๐คก
[docs]
Add explanation on how to mock methods not implemented in JSDOM [jest-jasmine2]
SimplifyEnv.execute
and TreeProcessor to setup and clean resources for the top suite the same way as for all of the children suites (#5885)- ๐ฅ
[babel-jest]
[BREAKING] Always return object from transformer (#5991) [*]
Run Prettier on compiled output (#5858)- ๐
[jest-cli]
Add fileChange hook for plugins (#5708) - ๐คก
[docs]
Add docs on usingjest.mock(...)
(#5648) - ๐
[docs]
Mention Jest Puppeteer Preset (#5722) - ๐
[docs]
Add jest-community section to website (#5675) - ๐
[docs]
Add versioned docs for v22.4 (#5733) - โ
[docs]
Improve Snapshot Testing Guide (#5812) - ๐ฅ
[jest-runtime]
[BREAKING] Removejest.genMockFn
andjest.genMockFunction
(#6173) [jest-message-util]
Avoid adding unnecessary indent to blank lines in stack traces (#6211)