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Recent questions tagged jestjs

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jestjs - How do I deal with localStorage in jest tests?

I keep getting "localStorage is not defined" in Jest tests which makes sense but what are my options? Hitting brick walls. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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900 views

1 answer

jestjs - Mock a constant property from a module for a specific test group

I have MyComponent.tsx that uses constants.ts module in order to do something based on the IS_IOS constant: import ... a-constant-property-from-a-module-for-a-specific-test-group...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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jestjs - How to test react-native methods?

I want to test Vibration module of react-native, the problem is that I get an error when I try to test ... ://stackoverflow.com/questions/65848268/how-to-test-react-native-methods...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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jestjs - react-query how to call mutate from custom useMutation hook in Jest test

I'm running a React Native project where I'm testing custom hooks written with react-query. I'm using Jest, ... -how-to-call-mutate-from-custom-usemutation-hook-in-jest-test...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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703 views

1 answer

jestjs - Jest - getting error when mocking FS modules and calling config module

I'm writing unit tests with Jest trying to test a module which uses FS. The module file: import fs from ' ... /jest-getting-error-when-mocking-fs-modules-and-calling-config-module...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.8k views

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jestjs - Cannot mock fs with jest using typescript - Property 'mockReturnValue' does not exist on type

Problem: Would someone help me figure out how to mock fs with jest using typescript? I've tried a few ... -mock-fs-with-jest-using-typescript-property-mockreturnvalue-does-not...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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jestjs - jest coverageThreshold glob exclude some sub folders

Inside my ./src/app/global-team folder, there are a-z folders. I want to set my threshold level ... .com/questions/65894304/jest-coveragethreshold-glob-exclude-some-sub-folders...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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853 views

1 answer

jestjs - Jest "No Environment is configured" problem when import a javascript file,which uses environemnt variables

I am using jest to write unit test for my javascript functions (running with nodejs), I am very new to ... no-environment-is-configured-problem-when-import-a-javascript-file-which...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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659 views

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jestjs - Test doesn't pass - project using typescript

I have a typescript project that I'm using TDD I have a test doesn't not pass I don't know how ... ://stackoverflow.com/questions/65911417/test-doesnt-pass-project-using-typescript...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

jestjs - Mocked async callback function is not called, the original is (Jest)

I struggle testing a callback function with Jest. Here is the function, simplified, taken from a NestJS project: ... -async-callback-function-is-not-called-the-original-is-jest...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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714 views

1 answer

jestjs - Jest - resetting value in module and reloading import

I'm writing a test in jest for a module which uses a constant from a different module. I want to set ... .com/questions/65917738/jest-resetting-value-in-module-and-reloading-import...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

jestjs - How to cast properly a mock function with Typescript

I'm trying to mock a function and use the benefits from Typescript but I can't find the best way to do ... /questions/65602161/how-to-cast-properly-a-mock-function-with-typescript...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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801 views

1 answer

jestjs - Create React App doesn't properly mock modules from __mocks__ directory

I have a working example with Jest and mocks from __mocks__ directory that works : With simple Jest setup // ... /create-react-app-doesnt-properly-mock-modules-from-mocks-directory...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

971 views

1 answer

jestjs - Check browser console messages and response status codes in Playwright and Jest

I recently started writing end to end tests using Playwright and Jest packages. In a test I would like to ... -console-messages-and-response-status-codes-in-playwright-and-jest...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

jestjs - Mocking platform detection in Jest and React Native

Some of the code I am trying to test detects the platform, using, e.g.: import { Platform } from ' ... .com/questions/43161416/mocking-platform-detection-in-jest-and-react-native...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.8k views

1 answer

jestjs - jest typescript property mock does not exist on type

When using jest.fn() to add a mock you can usually access the .mock property to access details such as ... /questions/52457575/jest-typescript-property-mock-does-not-exist-on-type...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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915 views

1 answer

jestjs - Debugging Jest test cases using node-inspector

Is there a way to use node-inspector to debug unit tests with Jest? It would be nice to step ... .com/questions/25142173/debugging-jest-test-cases-using-node-inspector...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

jestjs - How to pass variable from beforeEach hook to tests in jest?

beforeEach(async () => { const sandbox = sinon.sandbox.create() ... }) test('/add', () => { // ... /questions/52397708/how-to-pass-variable-from-beforeeach-hook-to-tests-in-jest...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

jestjs - How to pass variable from beforeEach hook to tests in jest?

beforeEach(async () => { const sandbox = sinon.sandbox.create() ... }) test('/add', () => { // ... /questions/52397708/how-to-pass-variable-from-beforeeach-hook-to-tests-in-jest...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

932 views

1 answer

jestjs - Jest coverage reporting on all committed files in create-react-app

Having difficulty with generating Jest coverage reports for all committed files in my create-react-app. Initially, code ... -reporting-on-all-committed-files-in-create-react-app...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

jestjs - create-react-app and jest - Cannot use import statement outside a module

I am using create-react-app. Running jest from the CLI causes this error (though in VS Code it shows in my ... -react-app-and-jest-cannot-use-import-statement-outside-a-module...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

835 views

1 answer

jestjs - Jest coverage reporting on all committed files in create-react-app

Having difficulty with generating Jest coverage reports for all committed files in my create-react-app. Initially, code ... -reporting-on-all-committed-files-in-create-react-app...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

jestjs - create-react-app and jest - Cannot use import statement outside a module

I am using create-react-app. Running jest from the CLI causes this error (though in VS Code it shows in my ... -react-app-and-jest-cannot-use-import-statement-outside-a-module...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

jestjs - How would I setup bamboo unit testing that runs both karma and jest

I have been trying to set up server-side testing for my application but have run into an issue with bamboo ... set up server-side testing separately in the .bamboorc file...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.1k views

1 answer

jestjs - TypeScript Jest Matchers functions are typed any

Jest doesn't type some of its expect functions in Matchers. For example, it doesn't generate compiling errors for following ... and won't pass any way? Backward compatible? etc....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

837 views

1 answer

jestjs - i use the jest for testing my javascript project, while running the tests, showing the error

enter image description here here is jest.config.js enter image description here what is the error means, i can't ... my project, find nothing abound the function. please help me....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

938 views

1 answer

jestjs - Azure PublishTestResults task fails to read Jest snapshot output

Below is a simplified snippet from my azure build pipeline: - task: Npm@1 name: ReactTests continueOnError: true inputs: ... so I'm surprised I can't find similar questions....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

jestjs - sass/sass-true/jest not finding testfiles

I'm trying to unit test some sass functions with dart-sass and sass-true via jest. The node version I am ... file or directory Does anybody have a solution for this behavior?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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