I'm trying to test my koin modules following this koin documentation
import android.app.Application
import android.content.Context
import androidx.arch.core.executor.testing.InstantTaskExecutorRule
import androidx.lifecycle.SavedStateHandle
import io.mockk.mockkObject
import org.junit.Rule
import org.junit.Test
import org.junit.rules.TestRule
import org.koin.test.check.checkKoinModules
import org.koin.test.mock.MockProviderRule
class CheckModulesTest {
@get:Rule
val rule: TestRule = InstantTaskExecutorRule()
@get:Rule
val mockProvider = MockProviderRule.create { clazz ->
mockkObject(clazz.java)
}
@Test
fun `test DI modules`() {
checkKoinModules(AppModules.modules) {
withInstance<Context>()
withInstance<Application>()
withInstance<SavedStateHandle>()
}
}
}
Note that my code is similar to the one on the documentation, but I'm using MockK, instead of Mockito.
Also, make sure to scroll down to also possible to use checkKoinModules on the link above to find the right snipet
However, I'm getting this error:
Failed to build object proxy
io.mockk.MockKException: Failed to build object proxy
at app//io.mockk.impl.instantiation.JvmObjectMockFactory.objectMockk(JvmObjectMockFactory.kt:51)
at app//com.sibela.smarthabits.di.CheckModulesTest$mockProvider$1.invoke(CheckModulesTest.kt:41)
at app//com.sibela.smarthabits.di.CheckModulesTest$mockProvider$1.invoke(CheckModulesTest.kt:20)
at app//com.sibela.smarthabits.di.CheckModulesTest$test DI modules$1.invoke(CheckModulesTest.kt:34)
at app//com.sibela.smarthabits.di.CheckModulesTest$test DI modules$1.invoke(CheckModulesTest.kt:26)
at app//org.koin.test.check.CheckModulesKt.declareParameterCreators(CheckModules.kt:110)
at app//org.koin.test.check.CheckModulesKt.checkModules(CheckModules.kt:102)
at app//org.koin.test.check.CheckModulesKt.checkModules(CheckModules.kt:40)
at app//org.koin.test.check.CheckModulesKt.checkKoinModules(CheckModules.kt:65)
at app//org.koin.test.check.CheckModulesKt.checkKoinModules$default(CheckModules.kt:62)
at app//com.sibela.smarthabits.di.CheckModulesTest.test DI modules(CheckModulesTest.kt:26)
at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base@11.0.15/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base@11.0.15/java.lang.reflect.Method.invoke(Method.java:566)
at app//org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at app//org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at app//org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at app//org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at app//org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:61)
at app//org.koin.test.mock.MockProviderRule$apply$1.evaluate(MockProviderRule.kt:28)
at app//org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at app//org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at app//org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at app//org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at app//org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at app//org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at app//org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at app//org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at app//org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at app//org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at app//org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at app//org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base@11.0.15/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base@11.0.15/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base@11.0.15/java.lang.reflect.Method.invoke(Method.java:566)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60)
at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133)
at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71)
at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69)
at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74)
Caused by: io.mockk.proxy.MockKAgentException: Failed to create proxy for class java.lang.Class.
class java.lang.Class is one of excluded classes
at app//io.mockk.proxy.jvm.ProxyMaker.throwIfNotPossibleToProxy(ProxyMaker.kt:131)
at app//io.mockk.proxy.jvm.ProxyMaker.proxy(ProxyMaker.kt:28)
at app//io.mockk.impl.instantiation.JvmObjectMockFactory.objectMockk(JvmObjectMockFactory.kt:43)
... 55 more
My modules are very simple and here's a sumarized version of them:
import androidx.room.Room
import org.koin.android.ext.koin.androidContext
import org.koin.androidx.viewmodel.dsl.viewModel
import org.koin.dsl.module
private val daos = module {
single {
Room
.databaseBuilder(
androidContext(),
FooDatabase::class.java,
FooDatabase.DATABASE_NAME
)
.fallbackToDestructiveMigration()
.build()
}
single { get<FooDatabase>().BarDao() }
// other DAOs
}
private val repositories = module {
single<FooRepository> { FooRepositoryImpl(get(), get()) }
// other respositories
}
private val useCases = module {
single { FooUseCase(get(), get(), get(), get()) }
// other UseCases
}
private val viewModels = module {
viewModel { FooViewModel(get(), get(), get()) }
// other ViewModels
}
private val alarmSchedulers = module {
single<FooAlarmScheduler> { FooAlarmSchedulerImpl(androidContext()) }
}
object AppModules {
val modules = daos + repositories + useCases + mappers + viewModels + alarmSchedulers
}
Apart from the dependencies mentioned above, I only have a Repository that requires a Context:
class DataStoreRepositoryImpl(private val context: Context) : DataStoreRepository {
And some of my ViewModes require a SavedStateHandle:
class FooViewModel(
private val savedStateHandle: SavedStateHandle,
private val fooUseCase: FooUseCase,
private val barUseCase: BarUseCase
) : ViewModel() {
I'm using the 3.3.0 version of Koin and the version 1.12.0 version of MockK:
def koin_version = '3.3.0'
implementation "io.insert-koin:koin-android:$koin_version"
testImplementation "io.insert-koin:koin-test-junit4:$koin_version"
testImplementation "io.mockk:mockk:1.12.0"
