fix(expect): do not rely on 'instanceof RegExp' #5729

niieani · 2018-03-05T20:57:34Z

Summary

instanceof RegExp will not be true for RegExp objects created inside of a different NodeJS VM or Window.

This commit fixes this issue by checking for the existence of test function on the object instead.

Test plan

Added integration test which otherwise failed without this fix.

`instanceof RegExp` will not be true for RegExp objects created inside of a different NodeJS VM or Window. This commit fixes this issue by checking for 'regexp.test' function instead.

codecov-io · 2018-03-05T21:15:30Z

Codecov Report

Merging #5729 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5729   +/-   ##
=======================================
  Coverage   63.65%   63.65%           
=======================================
  Files         216      216           
  Lines        7918     7918           
  Branches        4        4           
=======================================
  Hits         5040     5040           
  Misses       2877     2877           
  Partials        1        1

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3b0959a...648c3d5. Read the comment docs.

SimenB · 2018-03-05T21:50:14Z

Quick q (I guess the answer is "no"), would the check jest-get-type does (.constructor) work? https://github.com/facebook/jest/blob/3b0959ab9c9696f2779ec8e1a5a31bdac81be83b/packages/jest-get-type/src/index.js#L45-L46

thymikee · 2018-03-05T21:52:48Z

@SimenB I don't see why not. Would be great if we could reuse that.

niieani · 2018-03-05T21:59:21Z

@thymikee @SimenB then answer is no, it doesn't work since the global RegExp class will be different. It seems to be created inside of a VM, per instance.

Just tried it and the newly added integration test fails when checking for expected.constructor === RegExp instead of typeof expected.test === 'function'.

thymikee · 2018-03-05T22:00:11Z

Thanks, I thought it was only a thing for instanceof checks.

niieani · 2018-03-05T22:06:43Z

Actually the jest-get-type case for object:

https://github.com/facebook/jest/blob/3b0959ab9c9696f2779ec8e1a5a31bdac81be83b/packages/jest-get-type/src/index.js#L44-L54

Could be simplified to:

if (typeof value === 'object') {
  return value.constructor.name.toLowerCase();
}

This works for all the cases currently defined, and would work also for things like RegExps created inside of a VM.

Should I commit that change?

cpojer · 2018-03-06T09:53:59Z

Duck typing seems good here. Let's consider the change to jest-get-type separately.

This Pull Request updates dependency [jest](https://github.com/facebook/jest) from `~22.4.0` to `~23.0.0` <details> <summary>Release Notes</summary> ### [`v23.0.0`](https://github.com/facebook/jest/blob/master/CHANGELOG.md#2300) [Compare Source](jestjs/jest@2745e3e...614f739) ##### Features * `[expect]` Expose `getObjectSubset`, `iterableEquality`, and `subsetEquality` ([#6210](`jestjs/jest#6210)) * `[jest-snapshot]` Add snapshot property matchers ([#6210](`jestjs/jest#6210)) * `[jest-config]` Support jest-preset.js files within Node modules ([#6185](`jestjs/jest#6185)) * `[jest-cli]` Add `--detectOpenHandles` flag which enables Jest to potentially track down handles keeping it open after tests are complete. ([#6130](`jestjs/jest#6130)) * `[jest-jasmine2]` Add data driven testing based on `jest-each` ([#6102](`jestjs/jest#6102)) * `[jest-matcher-utils]` Change "suggest to equal" message to be more advisory ([#6103](`jestjs/jest#6103)) * `[jest-message-util]` Don't ignore messages with `vendor` anymore ([#6117](`jestjs/jest#6117)) * `[jest-validate]` Get rid of `jest-config` dependency ([#6067](`jestjs/jest#6067)) * `[jest-validate]` Adds option to inject `deprecationEntries` ([#6067](`jestjs/jest#6067)) * `[jest-snapshot]` [**BREAKING**] Concatenate name of test, optional snapshot name and count ([#6015](`jestjs/jest#6015)) * `[jest-runtime]` Allow for transform plugins to skip the definition process method if createTransformer method was defined. ([#5999](`jestjs/jest#5999)) * `[expect]` Add stack trace for async errors ([#6008](`jestjs/jest#6008)) * `[jest-jasmine2]` Add stack trace for timeouts ([#6008](`jestjs/jest#6008)) * `[jest-jasmine2]` Add stack trace for thrown non-`Error`s ([#6008](`jestjs/jest#6008)) * `[jest-runtime]` Prevent modules from marking themselves as their own parent ([#5235](`jestjs/jest#5235)) * `[jest-mock]` Add support for auto-mocking generator functions ([#5983](`jestjs/jest#5983)) * `[expect]` Add support for async matchers ([#5919](`jestjs/jest#5919)) * `[expect]` Suggest toContainEqual ([#5948](`jestjs/jest#5953)) * `[jest-config]` Export Jest's default options ([#5948](`jestjs/jest#5948)) * `[jest-editor-support]` Move `coverage` to `ProjectWorkspace.collectCoverage` ([#5929](`jestjs/jest#5929)) * `[jest-editor-support]` Add `coverage` option to runner ([#5836](`jestjs/jest#5836)) * `[jest-haste-map]` Support extracting dynamic `import`s ([#5883](`jestjs/jest#5883)) * `[expect]` Improve output format for mismatchedArgs in mock/spy calls. ([#5846](`jestjs/jest#5846)) * `[jest-cli]` Add support for using `--coverage` in combination with watch mode, `--onlyChanged`, `--findRelatedTests` and more ([#5601](`jestjs/jest#5601)) * `[jest-jasmine2]` [**BREAKING**] Adds error throwing and descriptive errors to `it`/ `test` for invalid arguments. `[jest-circus]` Adds error throwing and descriptive errors to `it`/ `test` for invalid arguments ([#5558](`jestjs/jest#5558)) * `[jest-matcher-utils]` Add `isNot` option to `matcherHint` function ([#5512](`jestjs/jest#5512)) * `[jest-config]` Add `<rootDir>` to runtime files not found error report ([#5693](`jestjs/jest#5693)) * `[expect]` Make toThrow matcher pass only if Error object is returned from promises ([#5670](`jestjs/jest#5670)) * `[expect]` Add isError to utils ([#5670](`jestjs/jest#5670)) * `[expect]` Add inverse matchers (`expect.not.arrayContaining`, etc., [#5517](`jestjs/jest#5517)) * `[expect]` `expect.extend` now also extends asymmetric matchers ([#5503](`jestjs/jest#5503)) * `[jest-mock]` Update `spyOnProperty` to support spying on the prototype chain ([#5753](`jestjs/jest#5753)) * `[jest-mock]` Add tracking of return values in the `mock` property ([#5752](`jestjs/jest#5752)) * `[jest-mock]` Add tracking of thrown errors in the `mock` property ([#5764](`jestjs/jest#5764)) * `[expect]`Add nthCalledWith spy matcher ([#5605](`jestjs/jest#5605)) * `[jest-cli]` Add `isSerial` property that runners can expose to specify that they can not run in parallel ([#5706](`jestjs/jest#5706)) * `[expect]` Add `.toBeCalledTimes` and `toHaveBeenNthCalledWith` aliases ([#5826](`jestjs/jest#5826)) * `[jest-cli]` Interactive Snapshot Mode improvements ([#5864](`jestjs/jest#5864)) * `[jest-editor-support]` Add `no-color` option to runner ([#5909](`jestjs/jest#5909)) * `[jest-jasmine2]` Pretty-print non-Error object errors ([#5980](`jestjs/jest#5980)) * `[jest-message-util]` Include column in stack frames ([#5889](`jestjs/jest#5889)) * `[expect]` Introduce toStrictEqual ([#6032](`jestjs/jest#6032)) * `[expect]` Add return matchers ([#5879](`jestjs/jest#5879)) * `[jest-cli]` Improve snapshot summaries ([#6181](`jestjs/jest#6181)) * `[expect]` Include custom mock names in error messages ([#6199](`jestjs/jest#6199)) * `[jest-diff]` Support returning diff from oneline strings ([#6221](`jestjs/jest#6221)) * `[expect]` Improve return matchers ([#6172](`jestjs/jest#6172)) * `[jest-cli]` Overhaul watch plugin hooks names ([#6249](`jestjs/jest#6249)) * `[jest-mock]` Include tracked call results in serialized mock ([#6244](`jestjs/jest#6244)) ##### Fixes * `[jest-cli]` Fix stdin encoding to utf8 for watch plugins. ([#6253](`jestjs/jest#6253)) * `[expect]` Better detection of DOM Nodes for equality ([#6246](`jestjs/jest#6246)) * `[jest-cli]` Fix misleading action description for F key when in "only failed tests" mode. ([#6167](`jestjs/jest#6167)) * `[jest-worker]` Stick calls to workers before processing them ([#6073](`jestjs/jest#6073)) * `[babel-plugin-jest-hoist]` Allow using `console` global variable ([#6075](`jestjs/jest#6075)) * `[jest-jasmine2]` Always remove node core message from assert stack traces ([#6055](`jestjs/jest#6055)) * `[expect]` Add stack trace when `expect.assertions` and `expect.hasAssertions` causes test failures. ([#5997](`jestjs/jest#5997)) * `[jest-runtime]` Throw a more useful error when trying to require modules after the test environment is torn down ([#5888](`jestjs/jest#5888)) * `[jest-mock]` [**BREAKING**] Replace timestamps with `invocationCallOrder` ([#5867](`jestjs/jest#5867)) * `[jest-jasmine2]` Install `sourcemap-support` into normal runtime to catch runtime errors ([#5945](`jestjs/jest#5945)) * `[jest-jasmine2]` Added assertion error handling inside `afterAll hook` ([#5884](`jestjs/jest#5884)) * `[jest-cli]` Remove the notifier actions in case of failure when not in watch mode. ([#5861](`jestjs/jest#5861)) * `[jest-mock]` Extend .toHaveBeenCalled return message with outcome ([#5951](`jestjs/jest#5951)) * `[jest-runner]` Assign `process.env.JEST_WORKER_ID="1"` when in runInBand mode ([#5860](`jestjs/jest#5860)) * `[jest-cli]` Add descriptive error message when trying to use `globalSetup`/`globalTeardown` file that doesn't export a function. ([#5835](`jestjs/jest#5835)) * `[expect]` Do not rely on `instanceof RegExp`, since it will not work for RegExps created inside of a different VM ([#5729](`jestjs/jest#5729)) * `[jest-resolve]` Update node module resolution algorithm to correctly handle symlinked paths ([#5085](`jestjs/jest#5085)) * `[jest-editor-support]` Update `Settings` to use spawn in shell option ([#5658](`jestjs/jest#5658)) * `[jest-cli]` Improve the error message when 2 projects resolve to the same config ([#5674](`jestjs/jest#5674)) * `[jest-runtime]` remove retainLines from coverage instrumentation ([#5692](`jestjs/jest#5692)) * `[jest-cli]` Fix update snapshot issue when using watchAll ([#5696](`jestjs/jest#5696)) * `[expect]` Fix rejects.not matcher ([#5670](`jestjs/jest#5670)) * `[jest-runtime]` Prevent Babel warnings on large files ([#5702](`jestjs/jest#5702)) * `[jest-mock]` Prevent `mockRejectedValue` from causing unhandled rejection ([#5720](`jestjs/jest#5720)) * `[pretty-format]` Handle React fragments better ([#5816](`jestjs/jest#5816)) * `[pretty-format]` Handle formatting of `React.forwardRef` and `Context` components ([#6093](`jestjs/jest#6093)) * `[jest-cli]` Switch collectCoverageFrom back to a string ([#5914](`jestjs/jest#5914)) * `[jest-regex-util]` Fix handling regex symbols in tests path on Windows ([#5941](`jestjs/jest#5941)) * `[jest-util]` Fix handling of NaN/Infinity in mock timer delay ([#5966](`jestjs/jest#5966)) * `[jest-resolve]` Generalise test for package main entries equivalent to ".". ([#5968](`jestjs/jest#5968)) * `[jest-config]` Ensure that custom resolvers are used when resolving the configuration ([#5976](`jestjs/jest#5976)) * `[website]` Fix website docs ([#5853](`jestjs/jest#5853)) * `[expect]` Fix isEqual Set and Map to compare object values and keys regardless of order ([#6150](`jestjs/jest#6150)) * `[pretty-format]` [**BREAKING**] Remove undefined props from React elements ([#6162](`jestjs/jest#6162)) * `[jest-haste-map]` Properly resolve mocked node modules without package.json defined ([#6232](`jestjs/jest#6232)) ##### Chore & Maintenance * `[jest-runner]` Move sourcemap installation from `jest-jasmine2` to `jest-runner` ([#6176](`jestjs/jest#6176)) * `[jest-cli]` Use yargs's built-in `version` instead of rolling our own ([#6215](`jestjs/jest#6215)) * `[docs]` Add explanation on how to mock methods not implemented in JSDOM * `[jest-jasmine2]` Simplify `Env.execute` and TreeProcessor to setup and clean resources for the top suite the same way as for all of the children suites ([#5885](`jestjs/jest#5885)) * `[babel-jest]` [**BREAKING**] Always return object from transformer ([#5991](`jestjs/jest#5991)) * `[*]` Run Prettier on compiled output ([#5858](`jestjs/jest#3497)) * `[jest-cli]` Add fileChange hook for plugins ([#5708](`jestjs/jest#5708)) * `[docs]` Add docs on using `jest.mock(...)` ([#5648](`jestjs/jest#5648)) * `[docs]` Mention Jest Puppeteer Preset ([#5722](`jestjs/jest#5722)) * `[docs]` Add jest-community section to website ([#5675](`jestjs/jest#5675)) * `[docs]` Add versioned docs for v22.4 ([##5733](https://github.com/facebook/jest/pull/#5733)) * `[docs]` Improve Snapshot Testing Guide ([#5812](`jestjs/jest#5812)) * `[jest-runtime]` [**BREAKING**] Remove `jest.genMockFn` and `jest.genMockFunction` ([#6173](`jestjs/jest#6173)) * `[jest-message-util]` Avoid adding unnecessary indent to blank lines in stack traces ([#6211](`jestjs/jest#6211)) --- </details> --- This PR has been generated by [Renovate Bot](https://renovatebot.com).

This Pull Request updates dependency [jest](https://github.com/facebook/jest) from `~22.4.0` to `~23.0.0` <details> <summary>Release Notes</summary> ### [`v23.0.0`](https://github.com/facebook/jest/blob/master/CHANGELOG.md#2300) [Compare Source](jestjs/jest@2745e3e...v23.0.0) ##### Features * `[expect]` Expose `getObjectSubset`, `iterableEquality`, and `subsetEquality` ([#6210](`jestjs/jest#6210)) * `[jest-snapshot]` Add snapshot property matchers ([#6210](`jestjs/jest#6210)) * `[jest-config]` Support jest-preset.js files within Node modules ([#6185](`jestjs/jest#6185)) * `[jest-cli]` Add `--detectOpenHandles` flag which enables Jest to potentially track down handles keeping it open after tests are complete. ([#6130](`jestjs/jest#6130)) * `[jest-jasmine2]` Add data driven testing based on `jest-each` ([#6102](`jestjs/jest#6102)) * `[jest-matcher-utils]` Change "suggest to equal" message to be more advisory ([#6103](`jestjs/jest#6103)) * `[jest-message-util]` Don't ignore messages with `vendor` anymore ([#6117](`jestjs/jest#6117)) * `[jest-validate]` Get rid of `jest-config` dependency ([#6067](`jestjs/jest#6067)) * `[jest-validate]` Adds option to inject `deprecationEntries` ([#6067](`jestjs/jest#6067)) * `[jest-snapshot]` [**BREAKING**] Concatenate name of test, optional snapshot name and count ([#6015](`jestjs/jest#6015)) * `[jest-runtime]` Allow for transform plugins to skip the definition process method if createTransformer method was defined. ([#5999](`jestjs/jest#5999)) * `[expect]` Add stack trace for async errors ([#6008](`jestjs/jest#6008)) * `[jest-jasmine2]` Add stack trace for timeouts ([#6008](`jestjs/jest#6008)) * `[jest-jasmine2]` Add stack trace for thrown non-`Error`s ([#6008](`jestjs/jest#6008)) * `[jest-runtime]` Prevent modules from marking themselves as their own parent ([#5235](`jestjs/jest#5235)) * `[jest-mock]` Add support for auto-mocking generator functions ([#5983](`jestjs/jest#5983)) * `[expect]` Add support for async matchers ([#5919](`jestjs/jest#5919)) * `[expect]` Suggest toContainEqual ([#5948](`jestjs/jest#5953)) * `[jest-config]` Export Jest's default options ([#5948](`jestjs/jest#5948)) * `[jest-editor-support]` Move `coverage` to `ProjectWorkspace.collectCoverage` ([#5929](`jestjs/jest#5929)) * `[jest-editor-support]` Add `coverage` option to runner ([#5836](`jestjs/jest#5836)) * `[jest-haste-map]` Support extracting dynamic `import`s ([#5883](`jestjs/jest#5883)) * `[expect]` Improve output format for mismatchedArgs in mock/spy calls. ([#5846](`jestjs/jest#5846)) * `[jest-cli]` Add support for using `--coverage` in combination with watch mode, `--onlyChanged`, `--findRelatedTests` and more ([#5601](`jestjs/jest#5601)) * `[jest-jasmine2]` [**BREAKING**] Adds error throwing and descriptive errors to `it`/ `test` for invalid arguments. `[jest-circus]` Adds error throwing and descriptive errors to `it`/ `test` for invalid arguments ([#5558](`jestjs/jest#5558)) * `[jest-matcher-utils]` Add `isNot` option to `matcherHint` function ([#5512](`jestjs/jest#5512)) * `[jest-config]` Add `<rootDir>` to runtime files not found error report ([#5693](`jestjs/jest#5693)) * `[expect]` Make toThrow matcher pass only if Error object is returned from promises ([#5670](`jestjs/jest#5670)) * `[expect]` Add isError to utils ([#5670](`jestjs/jest#5670)) * `[expect]` Add inverse matchers (`expect.not.arrayContaining`, etc., [#5517](`jestjs/jest#5517)) * `[expect]` `expect.extend` now also extends asymmetric matchers ([#5503](`jestjs/jest#5503)) * `[jest-mock]` Update `spyOnProperty` to support spying on the prototype chain ([#5753](`jestjs/jest#5753)) * `[jest-mock]` Add tracking of return values in the `mock` property ([#5752](`jestjs/jest#5752)) * `[jest-mock]` Add tracking of thrown errors in the `mock` property ([#5764](`jestjs/jest#5764)) * `[expect]`Add nthCalledWith spy matcher ([#5605](`jestjs/jest#5605)) * `[jest-cli]` Add `isSerial` property that runners can expose to specify that they can not run in parallel ([#5706](`jestjs/jest#5706)) * `[expect]` Add `.toBeCalledTimes` and `toHaveBeenNthCalledWith` aliases ([#5826](`jestjs/jest#5826)) * `[jest-cli]` Interactive Snapshot Mode improvements ([#5864](`jestjs/jest#5864)) * `[jest-editor-support]` Add `no-color` option to runner ([#5909](`jestjs/jest#5909)) * `[jest-jasmine2]` Pretty-print non-Error object errors ([#5980](`jestjs/jest#5980)) * `[jest-message-util]` Include column in stack frames ([#5889](`jestjs/jest#5889)) * `[expect]` Introduce toStrictEqual ([#6032](`jestjs/jest#6032)) * `[expect]` Add return matchers ([#5879](`jestjs/jest#5879)) * `[jest-cli]` Improve snapshot summaries ([#6181](`jestjs/jest#6181)) * `[expect]` Include custom mock names in error messages ([#6199](`jestjs/jest#6199)) * `[jest-diff]` Support returning diff from oneline strings ([#6221](`jestjs/jest#6221)) * `[expect]` Improve return matchers ([#6172](`jestjs/jest#6172)) * `[jest-cli]` Overhaul watch plugin hooks names ([#6249](`jestjs/jest#6249)) * `[jest-mock]` Include tracked call results in serialized mock ([#6244](`jestjs/jest#6244)) ##### Fixes * `[jest-cli]` Fix stdin encoding to utf8 for watch plugins. ([#6253](`jestjs/jest#6253)) * `[expect]` Better detection of DOM Nodes for equality ([#6246](`jestjs/jest#6246)) * `[jest-cli]` Fix misleading action description for F key when in "only failed tests" mode. ([#6167](`jestjs/jest#6167)) * `[jest-worker]` Stick calls to workers before processing them ([#6073](`jestjs/jest#6073)) * `[babel-plugin-jest-hoist]` Allow using `console` global variable ([#6075](`jestjs/jest#6075)) * `[jest-jasmine2]` Always remove node core message from assert stack traces ([#6055](`jestjs/jest#6055)) * `[expect]` Add stack trace when `expect.assertions` and `expect.hasAssertions` causes test failures. ([#5997](`jestjs/jest#5997)) * `[jest-runtime]` Throw a more useful error when trying to require modules after the test environment is torn down ([#5888](`jestjs/jest#5888)) * `[jest-mock]` [**BREAKING**] Replace timestamps with `invocationCallOrder` ([#5867](`jestjs/jest#5867)) * `[jest-jasmine2]` Install `sourcemap-support` into normal runtime to catch runtime errors ([#5945](`jestjs/jest#5945)) * `[jest-jasmine2]` Added assertion error handling inside `afterAll hook` ([#5884](`jestjs/jest#5884)) * `[jest-cli]` Remove the notifier actions in case of failure when not in watch mode. ([#5861](`jestjs/jest#5861)) * `[jest-mock]` Extend .toHaveBeenCalled return message with outcome ([#5951](`jestjs/jest#5951)) * `[jest-runner]` Assign `process.env.JEST_WORKER_ID="1"` when in runInBand mode ([#5860](`jestjs/jest#5860)) * `[jest-cli]` Add descriptive error message when trying to use `globalSetup`/`globalTeardown` file that doesn't export a function. ([#5835](`jestjs/jest#5835)) * `[expect]` Do not rely on `instanceof RegExp`, since it will not work for RegExps created inside of a different VM ([#5729](`jestjs/jest#5729)) * `[jest-resolve]` Update node module resolution algorithm to correctly handle symlinked paths ([#5085](`jestjs/jest#5085)) * `[jest-editor-support]` Update `Settings` to use spawn in shell option ([#5658](`jestjs/jest#5658)) * `[jest-cli]` Improve the error message when 2 projects resolve to the same config ([#5674](`jestjs/jest#5674)) * `[jest-runtime]` remove retainLines from coverage instrumentation ([#5692](`jestjs/jest#5692)) * `[jest-cli]` Fix update snapshot issue when using watchAll ([#5696](`jestjs/jest#5696)) * `[expect]` Fix rejects.not matcher ([#5670](`jestjs/jest#5670)) * `[jest-runtime]` Prevent Babel warnings on large files ([#5702](`jestjs/jest#5702)) * `[jest-mock]` Prevent `mockRejectedValue` from causing unhandled rejection ([#5720](`jestjs/jest#5720)) * `[pretty-format]` Handle React fragments better ([#5816](`jestjs/jest#5816)) * `[pretty-format]` Handle formatting of `React.forwardRef` and `Context` components ([#6093](`jestjs/jest#6093)) * `[jest-cli]` Switch collectCoverageFrom back to a string ([#5914](`jestjs/jest#5914)) * `[jest-regex-util]` Fix handling regex symbols in tests path on Windows ([#5941](`jestjs/jest#5941)) * `[jest-util]` Fix handling of NaN/Infinity in mock timer delay ([#5966](`jestjs/jest#5966)) * `[jest-resolve]` Generalise test for package main entries equivalent to ".". ([#5968](`jestjs/jest#5968)) * `[jest-config]` Ensure that custom resolvers are used when resolving the configuration ([#5976](`jestjs/jest#5976)) * `[website]` Fix website docs ([#5853](`jestjs/jest#5853)) * `[expect]` Fix isEqual Set and Map to compare object values and keys regardless of order ([#6150](`jestjs/jest#6150)) * `[pretty-format]` [**BREAKING**] Remove undefined props from React elements ([#6162](`jestjs/jest#6162)) * `[jest-haste-map]` Properly resolve mocked node modules without package.json defined ([#6232](`jestjs/jest#6232)) ##### Chore & Maintenance * `[jest-runner]` Move sourcemap installation from `jest-jasmine2` to `jest-runner` ([#6176](`jestjs/jest#6176)) * `[jest-cli]` Use yargs's built-in `version` instead of rolling our own ([#6215](`jestjs/jest#6215)) * `[docs]` Add explanation on how to mock methods not implemented in JSDOM * `[jest-jasmine2]` Simplify `Env.execute` and TreeProcessor to setup and clean resources for the top suite the same way as for all of the children suites ([#5885](`jestjs/jest#5885)) * `[babel-jest]` [**BREAKING**] Always return object from transformer ([#5991](`jestjs/jest#5991)) * `[*]` Run Prettier on compiled output ([#5858](`jestjs/jest#3497)) * `[jest-cli]` Add fileChange hook for plugins ([#5708](`jestjs/jest#5708)) * `[docs]` Add docs on using `jest.mock(...)` ([#5648](`jestjs/jest#5648)) * `[docs]` Mention Jest Puppeteer Preset ([#5722](`jestjs/jest#5722)) * `[docs]` Add jest-community section to website ([#5675](`jestjs/jest#5675)) * `[docs]` Add versioned docs for v22.4 ([##5733](https://github.com/facebook/jest/pull/#5733)) * `[docs]` Improve Snapshot Testing Guide ([#5812](`jestjs/jest#5812)) * `[jest-runtime]` [**BREAKING**] Remove `jest.genMockFn` and `jest.genMockFunction` ([#6173](`jestjs/jest#6173)) * `[jest-message-util]` Avoid adding unnecessary indent to blank lines in stack traces ([#6211](`jestjs/jest#6211)) --- </details> --- This PR has been generated by [Renovate Bot](https://renovatebot.com).

This Pull Request updates dependency [jest](https://github.com/facebook/jest) from `v22.4.3` to `v23.0.1` <details> <summary>Release Notes</summary> ### [`v23.0.1`](https://github.com/facebook/jest/blob/master/CHANGELOG.md#2301) [Compare Source](jestjs/jest@v23.0.0...3a3b4e3) ##### Chore & Maintenance * `[jest-jasemine2]` Add dependency on jest-each ([#6308](`jestjs/jest#6308)) * `[jest-each]` Move jest-each into core Jest ([#6278](`jestjs/jest#6278)) * `[examples]` Update typescript example to using ts-jest ([#6260](`jestjs/jest#6260)) ##### Fixes * `[pretty-format]` Serialize inverse asymmetric matchers correctly ([#6272](`jestjs/jest#6272)) --- ### [`v23.0.0`](https://github.com/facebook/jest/blob/master/CHANGELOG.md#2300) [Compare Source](jestjs/jest@2745e3e...v23.0.0) ##### Features * `[expect]` Expose `getObjectSubset`, `iterableEquality`, and `subsetEquality` ([#6210](`jestjs/jest#6210)) * `[jest-snapshot]` Add snapshot property matchers ([#6210](`jestjs/jest#6210)) * `[jest-config]` Support jest-preset.js files within Node modules ([#6185](`jestjs/jest#6185)) * `[jest-cli]` Add `--detectOpenHandles` flag which enables Jest to potentially track down handles keeping it open after tests are complete. ([#6130](`jestjs/jest#6130)) * `[jest-jasmine2]` Add data driven testing based on `jest-each` ([#6102](`jestjs/jest#6102)) * `[jest-matcher-utils]` Change "suggest to equal" message to be more advisory ([#6103](`jestjs/jest#6103)) * `[jest-message-util]` Don't ignore messages with `vendor` anymore ([#6117](`jestjs/jest#6117)) * `[jest-validate]` Get rid of `jest-config` dependency ([#6067](`jestjs/jest#6067)) * `[jest-validate]` Adds option to inject `deprecationEntries` ([#6067](`jestjs/jest#6067)) * `[jest-snapshot]` [**BREAKING**] Concatenate name of test, optional snapshot name and count ([#6015](`jestjs/jest#6015)) * `[jest-runtime]` Allow for transform plugins to skip the definition process method if createTransformer method was defined. ([#5999](`jestjs/jest#5999)) * `[expect]` Add stack trace for async errors ([#6008](`jestjs/jest#6008)) * `[jest-jasmine2]` Add stack trace for timeouts ([#6008](`jestjs/jest#6008)) * `[jest-jasmine2]` Add stack trace for thrown non-`Error`s ([#6008](`jestjs/jest#6008)) * `[jest-runtime]` Prevent modules from marking themselves as their own parent ([#5235](`jestjs/jest#5235)) * `[jest-mock]` Add support for auto-mocking generator functions ([#5983](`jestjs/jest#5983)) * `[expect]` Add support for async matchers ([#5919](`jestjs/jest#5919)) * `[expect]` Suggest toContainEqual ([#5948](`jestjs/jest#5953)) * `[jest-config]` Export Jest's default options ([#5948](`jestjs/jest#5948)) * `[jest-editor-support]` Move `coverage` to `ProjectWorkspace.collectCoverage` ([#5929](`jestjs/jest#5929)) * `[jest-editor-support]` Add `coverage` option to runner ([#5836](`jestjs/jest#5836)) * `[jest-haste-map]` Support extracting dynamic `import`s ([#5883](`jestjs/jest#5883)) * `[expect]` Improve output format for mismatchedArgs in mock/spy calls. ([#5846](`jestjs/jest#5846)) * `[jest-cli]` Add support for using `--coverage` in combination with watch mode, `--onlyChanged`, `--findRelatedTests` and more ([#5601](`jestjs/jest#5601)) * `[jest-jasmine2]` [**BREAKING**] Adds error throwing and descriptive errors to `it`/ `test` for invalid arguments. `[jest-circus]` Adds error throwing and descriptive errors to `it`/ `test` for invalid arguments ([#5558](`jestjs/jest#5558)) * `[jest-matcher-utils]` Add `isNot` option to `matcherHint` function ([#5512](`jestjs/jest#5512)) * `[jest-config]` Add `<rootDir>` to runtime files not found error report ([#5693](`jestjs/jest#5693)) * `[expect]` Make toThrow matcher pass only if Error object is returned from promises ([#5670](`jestjs/jest#5670)) * `[expect]` Add isError to utils ([#5670](`jestjs/jest#5670)) * `[expect]` Add inverse matchers (`expect.not.arrayContaining`, etc., [#5517](`jestjs/jest#5517)) * `[expect]` `expect.extend` now also extends asymmetric matchers ([#5503](`jestjs/jest#5503)) * `[jest-mock]` Update `spyOnProperty` to support spying on the prototype chain ([#5753](`jestjs/jest#5753)) * `[jest-mock]` Add tracking of return values in the `mock` property ([#5752](`jestjs/jest#5752)) * `[jest-mock]` Add tracking of thrown errors in the `mock` property ([#5764](`jestjs/jest#5764)) * `[expect]`Add nthCalledWith spy matcher ([#5605](`jestjs/jest#5605)) * `[jest-cli]` Add `isSerial` property that runners can expose to specify that they can not run in parallel ([#5706](`jestjs/jest#5706)) * `[expect]` Add `.toBeCalledTimes` and `toHaveBeenNthCalledWith` aliases ([#5826](`jestjs/jest#5826)) * `[jest-cli]` Interactive Snapshot Mode improvements ([#5864](`jestjs/jest#5864)) * `[jest-editor-support]` Add `no-color` option to runner ([#5909](`jestjs/jest#5909)) * `[jest-jasmine2]` Pretty-print non-Error object errors ([#5980](`jestjs/jest#5980)) * `[jest-message-util]` Include column in stack frames ([#5889](`jestjs/jest#5889)) * `[expect]` Introduce toStrictEqual ([#6032](`jestjs/jest#6032)) * `[expect]` Add return matchers ([#5879](`jestjs/jest#5879)) * `[jest-cli]` Improve snapshot summaries ([#6181](`jestjs/jest#6181)) * `[expect]` Include custom mock names in error messages ([#6199](`jestjs/jest#6199)) * `[jest-diff]` Support returning diff from oneline strings ([#6221](`jestjs/jest#6221)) * `[expect]` Improve return matchers ([#6172](`jestjs/jest#6172)) * `[jest-cli]` Overhaul watch plugin hooks names ([#6249](`jestjs/jest#6249)) * `[jest-mock]` Include tracked call results in serialized mock ([#6244](`jestjs/jest#6244)) ##### Fixes * `[jest-cli]` Fix stdin encoding to utf8 for watch plugins. ([#6253](`jestjs/jest#6253)) * `[expect]` Better detection of DOM Nodes for equality ([#6246](`jestjs/jest#6246)) * `[jest-cli]` Fix misleading action description for F key when in "only failed tests" mode. ([#6167](`jestjs/jest#6167)) * `[jest-worker]` Stick calls to workers before processing them ([#6073](`jestjs/jest#6073)) * `[babel-plugin-jest-hoist]` Allow using `console` global variable ([#6075](`jestjs/jest#6075)) * `[jest-jasmine2]` Always remove node core message from assert stack traces ([#6055](`jestjs/jest#6055)) * `[expect]` Add stack trace when `expect.assertions` and `expect.hasAssertions` causes test failures. ([#5997](`jestjs/jest#5997)) * `[jest-runtime]` Throw a more useful error when trying to require modules after the test environment is torn down ([#5888](`jestjs/jest#5888)) * `[jest-mock]` [**BREAKING**] Replace timestamps with `invocationCallOrder` ([#5867](`jestjs/jest#5867)) * `[jest-jasmine2]` Install `sourcemap-support` into normal runtime to catch runtime errors ([#5945](`jestjs/jest#5945)) * `[jest-jasmine2]` Added assertion error handling inside `afterAll hook` ([#5884](`jestjs/jest#5884)) * `[jest-cli]` Remove the notifier actions in case of failure when not in watch mode. ([#5861](`jestjs/jest#5861)) * `[jest-mock]` Extend .toHaveBeenCalled return message with outcome ([#5951](`jestjs/jest#5951)) * `[jest-runner]` Assign `process.env.JEST_WORKER_ID="1"` when in runInBand mode ([#5860](`jestjs/jest#5860)) * `[jest-cli]` Add descriptive error message when trying to use `globalSetup`/`globalTeardown` file that doesn't export a function. ([#5835](`jestjs/jest#5835)) * `[expect]` Do not rely on `instanceof RegExp`, since it will not work for RegExps created inside of a different VM ([#5729](`jestjs/jest#5729)) * `[jest-resolve]` Update node module resolution algorithm to correctly handle symlinked paths ([#5085](`jestjs/jest#5085)) * `[jest-editor-support]` Update `Settings` to use spawn in shell option ([#5658](`jestjs/jest#5658)) * `[jest-cli]` Improve the error message when 2 projects resolve to the same config ([#5674](`jestjs/jest#5674)) * `[jest-runtime]` remove retainLines from coverage instrumentation ([#5692](`jestjs/jest#5692)) * `[jest-cli]` Fix update snapshot issue when using watchAll ([#5696](`jestjs/jest#5696)) * `[expect]` Fix rejects.not matcher ([#5670](`jestjs/jest#5670)) * `[jest-runtime]` Prevent Babel warnings on large files ([#5702](`jestjs/jest#5702)) * `[jest-mock]` Prevent `mockRejectedValue` from causing unhandled rejection ([#5720](`jestjs/jest#5720)) * `[pretty-format]` Handle React fragments better ([#5816](`jestjs/jest#5816)) * `[pretty-format]` Handle formatting of `React.forwardRef` and `Context` components ([#6093](`jestjs/jest#6093)) * `[jest-cli]` Switch collectCoverageFrom back to a string ([#5914](`jestjs/jest#5914)) * `[jest-regex-util]` Fix handling regex symbols in tests path on Windows ([#5941](`jestjs/jest#5941)) * `[jest-util]` Fix handling of NaN/Infinity in mock timer delay ([#5966](`jestjs/jest#5966)) * `[jest-resolve]` Generalise test for package main entries equivalent to ".". ([#5968](`jestjs/jest#5968)) * `[jest-config]` Ensure that custom resolvers are used when resolving the configuration ([#5976](`jestjs/jest#5976)) * `[website]` Fix website docs ([#5853](`jestjs/jest#5853)) * `[expect]` Fix isEqual Set and Map to compare object values and keys regardless of order ([#6150](`jestjs/jest#6150)) * `[pretty-format]` [**BREAKING**] Remove undefined props from React elements ([#6162](`jestjs/jest#6162)) * `[jest-haste-map]` Properly resolve mocked node modules without package.json defined ([#6232](`jestjs/jest#6232)) ##### Chore & Maintenance * `[jest-runner]` Move sourcemap installation from `jest-jasmine2` to `jest-runner` ([#6176](`jestjs/jest#6176)) * `[jest-cli]` Use yargs's built-in `version` instead of rolling our own ([#6215](`jestjs/jest#6215)) * `[docs]` Add explanation on how to mock methods not implemented in JSDOM * `[jest-jasmine2]` Simplify `Env.execute` and TreeProcessor to setup and clean resources for the top suite the same way as for all of the children suites ([#5885](`jestjs/jest#5885)) * `[babel-jest]` [**BREAKING**] Always return object from transformer ([#5991](`jestjs/jest#5991)) * `[*]` Run Prettier on compiled output ([#5858](`jestjs/jest#3497)) * `[jest-cli]` Add fileChange hook for plugins ([#5708](`jestjs/jest#5708)) * `[docs]` Add docs on using `jest.mock(...)` ([#5648](`jestjs/jest#5648)) * `[docs]` Mention Jest Puppeteer Preset ([#5722](`jestjs/jest#5722)) * `[docs]` Add jest-community section to website ([#5675](`jestjs/jest#5675)) * `[docs]` Add versioned docs for v22.4 ([#5733](`jestjs/jest#5733)) * `[docs]` Improve Snapshot Testing Guide ([#5812](`jestjs/jest#5812)) * `[jest-runtime]` [**BREAKING**] Remove `jest.genMockFn` and `jest.genMockFunction` ([#6173](`jestjs/jest#6173)) * `[jest-message-util]` Avoid adding unnecessary indent to blank lines in stack traces ([#6211](`jestjs/jest#6211)) --- ### [`v22.4.4`](jestjs/jest@6851d8b...v22.4.4) [Compare Source](jestjs/jest@6851d8b...v22.4.4) --- </details> --- This PR has been generated by [Renovate Bot](https://renovatebot.com).

github-actions · 2021-05-12T19:12:09Z

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.

fix(expect): do not rely on 'instanceof RegExp'

6de9773

`instanceof RegExp` will not be true for RegExp objects created inside of a different NodeJS VM or Window. This commit fixes this issue by checking for 'regexp.test' function instead.

facebook-github-bot added the cla signed label Mar 5, 2018

chore(CHANGELOG): entry for instanceof RegExp fix

ceba50c

SimenB approved these changes Mar 5, 2018

View reviewed changes

fix(expect): silence erroneous flow errors

648c3d5

cpojer merged commit 469ad79 into jestjs:master Mar 6, 2018

ncovercash mentioned this pull request May 24, 2018

Update babel-jest to the latest version 🚀 Shopify/draggable#223

Closed

dependencies bot mentioned this pull request Jun 1, 2018

Update babel-jest in / from 22.1.0 to 23.0.1 leonardofaria/leozera-ui#192

Closed

dependencies bot mentioned this pull request Nov 1, 2018

Update jest in / from 22.1.4 to 23.6.0 leonardofaria/leozera-ui#250

Closed

snyk-bot mentioned this pull request Mar 17, 2020

[Snyk] Upgrade expect from 23.0.0 to 23.6.0 yowainwright/react-workshop#8

Merged

github-actions bot locked as resolved and limited conversation to collaborators May 12, 2021

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

fix(expect): do not rely on 'instanceof RegExp' #5729

fix(expect): do not rely on 'instanceof RegExp' #5729

niieani commented Mar 5, 2018 •

edited

codecov-io commented Mar 5, 2018

SimenB commented Mar 5, 2018

thymikee commented Mar 5, 2018

niieani commented Mar 5, 2018 •

edited

thymikee commented Mar 5, 2018

niieani commented Mar 5, 2018 •

edited

cpojer commented Mar 6, 2018

github-actions bot commented May 12, 2021

fix(expect): do not rely on 'instanceof RegExp' #5729

fix(expect): do not rely on 'instanceof RegExp' #5729

Conversation

niieani commented Mar 5, 2018 • edited

Summary

Test plan

codecov-io commented Mar 5, 2018

Codecov Report

SimenB commented Mar 5, 2018

thymikee commented Mar 5, 2018

niieani commented Mar 5, 2018 • edited

thymikee commented Mar 5, 2018

niieani commented Mar 5, 2018 • edited

cpojer commented Mar 6, 2018

github-actions bot commented May 12, 2021

niieani commented Mar 5, 2018 •

edited

niieani commented Mar 5, 2018 •

edited

niieani commented Mar 5, 2018 •

edited