Hello, everyone! :blush: Is there any gotcha with Hilt + Instrumented Tests? I’m following the <Hil...

# dagger

[escodro]

Hello, everyone! 😊

Is there any gotcha with Hilt + Instrumented Tests? I’m following the Hilt Testing documentation and the Crane sample and can’t make it work at all!
If I run with --debug it only gives me the default:

Execution failed for task ':app:kaptDebugAndroidTestKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptExecution
> java.lang.reflect.InvocationTargetException (no error message)

I’m migrating from Koin to Hilt but this is blocking me once I want to do some end to end tests in my application.

Thanks a lot in advance! ❤️

[escodro]

Test class:

@HiltAndroidTest
internal class HomeScreenTest {

    @get:Rule
    val composeTestRule = createComposeRule()

    @get:Rule
    var hiltRule = HiltAndroidRule(this)

    private val context = InstrumentationRegistry.getInstrumentation().targetContext

    @Before
    fun setup() {
        composeTestRule.setContent {
            NavGraph()
        }
    }

Custom runner on build.gradle

android {
    defaultConfig {
      ...
      testInstrumentationRunner "com.escodro.alkaa.CustomTestRunner"
    }

build.gradle

androidTestImplementation (Deps.hilt.android){
    exclude group: "androidx.fragment", module: "fragment"
    exclude group: "androidx.lifecycle", module: "lifecycle-runtime"
    exclude group: "androidx.lifecycle", module: "lifecycle-livedata-core"
}
androidTestImplementation Deps.test.runner
kaptAndroidTest Deps.hilt.compiler

[wasyl]

Try --stacktrace, this may give you some more specific error

[escodro]

Yeah, actually I tried with all of them: --stacktrace, --debug, `--info`… The only way to see more helpful logs is removing the kaptAndroidTest Deps.hilt.compiler dependency, which does not help a lot.

[allan.conda]

whats CustomTestRunner

[escodro]

https://developer.android.com/training/dependency-injection/hilt-testing#instrumented-tests

[allan.conda]

I meant the snippet.
Perhaps you need to add this?

@Config(application = HiltTestApplication::class)

[allan.conda]

Nvm, my tests dont have that and I use a custom runner with a custom application too.

[escodro]

If only kapt could give an actual error message…

[trevjones]

you might try adding this to your gradle jvm args while debugging. its helped me get better output from other compiler issues.
-Dkotlin.compiler.execution.strategy="in-process"

[escodro]

Thanks, @trevjones! I definitely will give a try in the future. 😊
For now, I reverted to Koin so I can keep developing the app…