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When updating to latest version of @angular-builders/jest tests fail

See original GitHub issue

Describe the Bug

After updating to the latest 12.1.1 version from 12.1.0 version. I get this error when running tests with ng test:

Schema validation failed with the following errors: Data path "/polyfills" must be array.

Expected Behavior

No error in the runner when running tests

Environment

Libs

@angular/core version: 12.2.3
@angular-devkit/build-angular version: 12.2.3
@angular-builders/jest version: 12.1.1

For Tooling issues:

Node version: 14.15.1
Platform: Mac

Issue Analytics

State:
Created 2 years ago
Reactions:2
Comments:5 (2 by maintainers)

Top GitHub Comments

4reactions

astikcommented, Sep 2, 2021

You are absolutely right! Removing unneeded / unknown configuration from the test builder fixed everything! Thank you =)

2reactions

just-jebcommented, Sep 2, 2021

I’m curious, why do you need polyfills entry in your test target at all when using @angular-builders/jest builder?
Here is the builder’s schema, it doesn’t contain a polyfills field. The reason you’re getting this error is that all the additional (non-schema) fields are considered an array of strings (so that you’d be able to pass filenames to ng test just like you pass them to jest).

My guess is that polyfills is a leftover from Karma builder you can safely remove it. The only options needed in angular.json are those mentioned here.