Due to <https://github.com/JetBrains/kotlin/blob/master/libraries/tools/kotlin-gradle-plug[…]jetbrai...

# javascript

[CLOVIS]

Due to https://github.com/JetBrains/kotlin/blob/master/libraries/tools/kotlin-gradle-plug[…]jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt, Chrome is always enabled as a browser. What if I don't want to use Chrome? How can I run tests only on Firefox?

For context, I'm setting up my CI pipeline, and each browser is tested in parallel in a specific image that only has what is necessary. Thus, no Chrome in the Firefox tests.

[hfhbd]

You can easily change the browser using the Gradle dsl testTask { useFirefox() } or set it with a property: https://youtrack.jetbrains.com/issue/KT-52951

[CLOVIS]

I have kotlin.js.browser.karma.browsers=firefox but it still tries to execute Chrome too. As you can see in the code I linked above, KGP always adds Chrome, no matter what other browsers you specify.

[hfhbd]

The link in KGP only adds the launcher dependency, but does not use Crome as default browser. This is handled in this line: https://github.com/JetBrains/kotlin/blob/405a502675bfeb2457ecdd15bee10e054d1c0934/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinBrowserJsIr.kt#L61, so you need to use an empty testTask:

js(IR) {
  browser {
    testTask { }
  }
}

[hfhbd]

Sorry, you need to use this code:

js(IR) {
  browser {
    testTask {
      useKarma {
      }
    }
  }
}

This results into:
Execution failed for task 'sharedjsBrowserTest'.

No browsers configured for task 'sharedjsBrowserTest'