Cannot use Kotlin backticked method names in androidTest - bad descriptor exception

Issue

In my unit tests I use Kotlin's backticked methods for better readability, e.g.

@Test fun `Foo should return bar`()

It works nice and well for tests in <module>/src/test directory, but when I try to do the same in <module>/src/androidTest I get an exception:

Error:java.lang.IllegalArgumentException: bad descriptor: Lcom/packageName/MainActivityTest$Foo should return bar$1;
Error:Execution failed for task ':sample:transformClassesWithDexBuilderForDebugAndroidTest'. > com.android.build.api.transform.TransformException: org.gradle.tooling.BuildException: com.android.dx.cf.iface.ParseException: bad descriptor: Lcom/packageName/MainActivityTest$Foo should return bar$1;

Is there some trick to make it work?

Solution

Support for spaces in function names has been added and is now available in API 30.

To use it, set buildToolsVersion, compileSdkVersion and targetSdkVersion to 30+ and run your tests on an Android 30+ device. If you want to use this in anything else than tests, you'll have to set minSdkVersion to 30+ as well.

Answered By - Cristan