expect matchers are not extended with jest

[grosch]

Is this a regression?

Yes

Description

The custom matchers you've defined, like toHaveExactText, do not work with jest setups.

I'm 99% sure the issue is that there is no call to expect.extend as shown at https://jestjs.io/docs/expect#expectextendmatchers but I don't understand the setup enough to provide a PR for this fix.

Please provide a link to a minimal reproduction of the bug

Just try to use one with a jest config and it'll fail.

Please provide the exception or error you saw

TypeError: expect(...).toHaveExactText is not a function
    at /Users/scott/foo/lamp/src/app/button-enabled-dialog/button-enabled-dialog.component.spec.ts:62:28
    at l.invoke (/Users/scott/foo/lamp/node_modules/zone.js/fesm2015/zone-testing-bundle.min.js:13:6400)
    at ProxyZoneSpec.onInvoke (/Users/scott/foo/lamp/node_modules/zone.js/fesm2015/zone-testing-bundle.min.js:110:2047)
    at l.invoke (/Users/scott/foo/lamp/node_modules/zone.js/fesm2015/zone-testing-bundle.min.js:13:6340)
    at a.run (/Users/scott/foo/lamp/node_modules/zone.js/fesm2015/zone-testing-bundle.min.js:13:1812)
    at Object.o (/Users/scott/foo/lamp/node_modules/zone.js/fesm2015/zone-testing-bundle.min.js:134:592)
    at Promise.then.completed (/Users/scott/foo/lamp/node_modules/jest-circus/build/utils.js:333:28)
    at new Promise (<anonymous>)
    at callAsyncCircusFn (/Users/scott/foo/lamp/node_modules/jest-circus/build/utils.js:259:10)
    at _callCircusTest (/Users/scott/foo/lamp/node_modules/jest-circus/build/run.js:277:40)
    at _runTest (/Users/scott/foo/lamp/node_modules/jest-circus/build/run.js:209:3)
    at _runTestsForDescribeBlock (/Users/scott/foo/lamp/node_modules/jest-circus/build/run.js:97:9)
    at _runTestsForDescribeBlock (/Users/scott/foo/lamp/node_modules/jest-circus/build/run.js:91:9)
    at _runTestsForDescribeBlock (/Users/scott/foo/lamp/node_modules/jest-circus/build/run.js:91:9)
    at run (/Users/scott/foo/lamp/node_modules/jest-circus/build/run.js:31:3)
    at runAndTransformResultsToJestFormat (/Users/scott/foo/lamp/node_modules/jest-circus/build/legacy-code-todo-rewrite/jestAdapterInit.js:135:21)

Please provide the environment you discovered this bug in

Angular CLI: 14.0.0
Node: 18.4.0 (Unsupported)
Package Manager: yarn 1.22.19 
OS: darwin arm64

Angular: 14.0.0
... animations, cdk, cli, common, core, forms, language-service
... platform-browser, platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1400.0
@angular-devkit/build-angular   14.0.0
@angular-devkit/core            14.0.0
@angular-devkit/schematics      14.0.0
@angular/compiler               14.0.2
@angular/compiler-cli           14.0.2
@schematics/angular             14.0.0
ng-packagr                      14.0.0
rxjs                            6.6.3
typescript                      4.7.3

Anything else?

No response

Do you want to create a pull request?

No

[NetanelBasal]

Why does it still work here https://github.com/ngneat/spectator/blob/ac40000dfa6665468e24e22607351e90c3805501/projects/spectator/jest/test/hello/hello.component.spec.ts?

[grosch]

I'm going to guess that it's a difference between using ESM modules or not?

[grosch]

example.zip

Attached is a bare minimum project that is setup to use jest with ESM modules and shows the issue if you just do a 'yarn test'

[grosch]

@NetanelBasal Were you able to reproduce with the zip I provided?

[NetanelBasal]

Can you do it on stackblitz?

[grosch]

Maybe? Not sure how that's easier than just using the zip I gave you. I set it up at https://angular-ivy-rtojsi.stackblitz.io but I have no idea how to run jest on stackblitz so not sure if it'll fail the same way or not.

[NetanelBasal]

The issue is that jest is undefined here.

[NetanelBasal]

v11.1.0

[grosch]

Thank you so much!