In trying to set unitTests.returnDefaultValues = true as per https://developer.android.com/training/testing/local-tests#error in agp-kmp I have found it does not prevent the reported test errors.

In normal AGP, you set this on UnitTestOptions through a CommonExtension. I believe in AGP-KMP, you are supposed to set this directly on KotlinMultiplatformAndroidTestOnJvm. However, I have tried setting

compilations.withType(KotlinMultiplatformAndroidTestOnJvm) {
    it.returnDefaultValues = true
}

in both build.gradle and buildSrc (where I can watch it be applied in the debugger) and it doesn't appear to fix the issue.

This problem is observed when applying the diff in this file to androidx, and running :compose:runtime:runtime:testAndroidTestOnJvm.

My best guess is that isReturnDefaultValues is not propagating properly at some point? As mentioned in chat, there are apparently no tests for this case.

Perhaps related is that returnDefaultValues appears to be defined in two places, publicly in DSL in KotlinMultiplatformAndroidTestOnJvm, and privately in KmpUnitTestOptionsDslInfoImpl?

The simplest workaround would normally be to add robolectric to the androidUnitTest sourceSet and tests in question, but in the case I've been looking at (compose-runtime) several of the tests are defined at the common level, and we can't add the robolectric test runner in a non-jvm common sourceSet.