Unit testing and code coverage in js-files

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1

I’ve been writing unit tests for js-files in /site/lib/, and I’ve been trying to find some way to get code coverage running for the tests as well.
Jacoco seems to work fine for .java-files, but is there any way to get coverage for js-files ran through Nashorn?

2

Hi.

Yes, Jacoco is good for Java files but sadly it does not cover javascript files. Right now it’s not very easy to create a coverage tool for Nashorn. But in Java 9 it should be possible to create some sort of code-coverage tool that uses the same format as Jacoco or Emma.

3

Almost 7 years later, I’m having the exact same problem. Have things changed? Is it possible / easier to get code coverage for js/ts-tests of backend controllers?

1 Like
4

Yes, you can use jest.

I’ve used it in a bunch of projects now.

You’ll have to mock all the java code though. mock-xp can help with that.

Here’s some tests:

Mock-XP is still under Playground.

The coverage results can be made available here via github actions: