Plugin errors in Android Studio 4.2 beta1

Using de.mannodermaus.gradle.plugins:android-junit5:1.6.2.0 in Android Studio 4.2 beta1 in a multi-module project with:

• Gradle 6.7.1
• kotlin 1.4.20
• JUnit 5.7.0
• com.android.tools.build:gradle:4.2.0-beta01
• androidx.test🏃1.3.0
• de.mannodermaus.junit5:android-test-core:1.2.0
• de.mannodermaus.junit5:android-test-runner:1.2.0

I’m seeing two issues:

1. Running an individual instrumented test works, but @BeforeAll function not invoked
2. in the android block of build.gradle.kts, attempting this testOptions block:

    testOptions {
        junitPlatform {
            instrumentationTests {
                // Whether or not to validate configuration of instrumentation tests in this build
                integrityCheckEnabled = true
            }
        }
    }

The junitPlatform block shows as a syntax error even though the de.mannodermaus.android-junit5 is present and working in the plugins block.

Without the testOptions block, and manually invoking the @BeforeAll function, the instrumented test runs fine, and debugs fine using JUnit5 as far as I can tell. I know AS 4.2 beta 1 is brand new (and a beta), as is the android gradle plugin, so issues are not surprising. If there is anything additional I can do to help diagnose this, let me know.

[mannodermaus]

I’ve had a similar experience with a different plugin before, where the provided DSL was not recognized at all and I had to use a different means to configure it. Might be a Kotlin DSL/Android Studio issue, rather than something within android-junit5.

As a workaround, you can forego the DSL sugar and access the extension directly with Kotlin DSL’s the method:

android {
  testOptions {
    with(the<AndroidJUnitPlatformExtension>()) {
      instrumentationTests {
        // Whether or not to validate configuration of instrumentation tests in this build
        integrityCheckEnabled = true
      }
    }
  }
}

[mannodermaus]

This was resolved with the 1.7.1.1 release of the plugin, which moved the location of the extension to the Project rather than the TestOptions block of the Android plugin. After updating to that version, either of the following will work (though the first version is more canonical):

junitPlatform {
  // Configure
}

android {
  testOptions {
    junitPlatform {
      // Configure
    }
  }
}