The unit test is running successfully on the local environment, but it is failing on Jenkins with the error code TS2339, stating that the property 'toBeTruthy' is not recognized on the type 'Assertion'

I've been tackling a project in Angular and recently encountered an issue. Running 'npm run test' locally shows that my tests are passing without any problems.

 it('should create', () => {
expect(component).toBeTruthy();});

However, when I push these changes to Bitbucket, the build fails on Jenkins.

    <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cfbfbda0a5aaacbb8fffe1ffe1ff">[email protected]</a> swb:test

[2024-01-23T15:09:14.375Z] > npm run test:ci

[2024-01-23T15:09:14.870Z] 

[2024-01-23T15:09:14.870Z] > <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="0c7c7e6366696f784c3c223c223c">[email protected]</a> test:ci

[2024-01-23T15:09:14.870Z] > ng test --watch false --code-coverage --browsers ChromeHeadlessForDocker --progress false

[2024-01-23T15:09:30.458Z] 

[2024-01-23T15:09:30.458Z] START:

[2024-01-23T15:09:30.458Z] 

[2024-01-23T15:09:30.458Z] Error: error TS2688: Cannot find type definition file for 'jest'.

[2024-01-23T15:09:30.458Z]   The file is in the program because:

[2024-01-23T15:09:30.458Z]     Entry point of type library 'jest' specified in compilerOptions

[2024-01-23T15:09:30.458Z] 

[2024-01-23T15:09:30.458Z] 

... (error details continue)

<script returned exit code 1

Why do my tests pass locally but fail on Jenkins? How can I resolve this issue? I'm really struggling to find a solution and it's becoming quite frustrating. :( Ps: I faced a similar error locally but managed to fix it using this link: Angular Unit Tests Property 'toBeTruthy' does not exist on type 'Assertion'

I've tried various suggestions from Stack Overflow! I even checked for any Docker-related issues and reviewed the Jenkinsfile, but couldn't identify anything unusual. To ensure compatibility between my local setup and Jenkins, I made the following adjustments:

npm_nodejs_version: 20.8.1
npm_version: 10.1.0
angulartypescriptunit-testingjenkinsjasmine

Answer №1

After much time spent searching, I finally came across the resolution! Despite having code that worked on a different branch, I ran this command:

git diff --name-only the-working-branch..the-failing-branch

This provided me with a list of file names that had differences, allowing me to address each one individually.

I also updated the versions for node and npm to the following:

npm_nodejs_version: 16.13.0
npm_version: 6

Additionally, another option is to rebase the working branch onto the failing one as an alternative solution.

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