[Team] Testing Koin 2.0.0

arnaudgiuliani commented 5 years ago

Hello all :)

Koin 2.0.0-alpha-2 has been published in jcenter 👍 Here is how you can test it.

Starting Koin with the new DSL:

// Coffee Maker example
fun main(vararg args: String) {
    // declare a KoinApplication
    koinApplication {
        // enable INFO logger
        useLogger()
        // load Koin modules
        loadModules(coffeeAppModule)
    }.start() // don't forget to start it, to setup it in StandAlone Koin Application

    // ...
}

Starting an Android app with the new Koin DSL:

class MainApplication : Application() {

    override fun onCreate() {
        super.onCreate()

        // start Koin context
        koinApplication {
            // Use Android Logger
            useAndroidLogger(Level.DEBUG)
            // Use Android Context from MainApplication
            useAndroidContext(this@MainApplication)
            // Load modules
            loadModules(myModule)
        }.start() // don't forget to start it
    }
}

Starting Koin with Ktor:

fun Application.main() {
    // Install Ktor features
    install(DefaultHeaders)
    install(CallLogging)
    // install Koin Application
    installKoin(koinApplication {
        useLogger(logger = SLF4JLogger())
        loadModules(helloAppModule)
    })

    //...
}

Modules (no more inner module and name for module)

val myModule = module {
     // single, factory, scope, viewModel
}

Binding & names are clearly logged:

module {
    // resolved by name "default"
    single<Simple.ComponentInterface1>("default") { Simple.Component2() }
    // Resolved by type Simple.ComponentInterface1
    single<Simple.ComponentInterface1> { Simple.Component1() }
}

[INFO] [Koin] bind name:'default' ~ Single[name:'default', type:'org.koin.Simple.ComponentInterface1']
[INFO] [Koin] bind type:'org.koin.Simple.ComponentInterface1' ~ Single[type:'org.koin.Simple.ComponentInterface1']

Same API But changes import: inject(), get(), getViewModel(), viewModel() ... Also note that you can request by KClass with get() (check function signature)
Scope group declaration

module {
     withScope(SCOPE_ID) {
         scoped { Simple.ComponentA() }
         scoped { Simple.ComponentB(get()) }
     }
}

Module check: checkModules() is available on a KoinApplication

val mockedAndroidContext = mock(Application::class.java)

    @Test
    fun testRemoteConfiguration() {
        koinApplication {
            useAndroidContext(mockedAndroidContext)
            loadModules(onlineWeatherApp)
        }.checkModules()
    }

Mock & Testing:

val coffeeKoinApp = koinApplication {
    useLogger()
    loadModules(coffeeAppModule)
}

class CoffeeMakerTest : AutoCloseKoinTest() {

    private val coffeeMaker: CoffeeMaker by inject()
    private val heater: Heater by inject()

    @Before
    fun before() {
        coffeeKoinApp.start()

        declareMock<Heater> {
            given(isHot()).will { true }
        }
    }

    @Test
    fun testHeaterIsTurnedOnAndThenOff() {

        coffeeMaker.brew()

        verify(heater, times(1)).on()
        verify(heater, times(1)).off()
    }
}

Koin instance isolation:

val app1 = koinApplication {
    loadModules(
        module {
            single { Simple.ComponentA() }
        })
}

val app2 = koinApplication {
    loadModules(
        module {
            single { Simple.ComponentA() }
        })
}

val a1: Simple.ComponentA = app1.koin.get()
val a2: Simple.ComponentA = app2.koin.get()
// a1 & a2 not equals

Koin from Java:

KoinApplication.create()
            .useLogger()
            .loadModules(koinModule)
            .start();

Koin extensions still available:

val MVPModule = module {
        single<Repository>()
        single<View>()
        single<Presenter>()
    }

Feel free to give your feedback!

Cheers.

westonal commented 5 years ago

// don't forget to start it

why do I have to start it in a separate step? Or phrased another way: when would one not want to start it?

DSL style:

al app2 = koinApplication {
    loadModules(
        module {

You are mixing imperative and declarative styles. It think DSLs read nicest when they stick to declarative. i.e. loadModules and useLogger feel out of place.

Compare to:

 koinApplication {
            // Use Android Logger
            androidLogger(Level.DEBUG)
            // Use Android Context from MainApplication
            androidContext(this@MainApplication)
            // Load modules
            modules(myModule)
        }

arnaudgiuliani commented 5 years ago

why do I have to start it in a separate step? Or phrased another way: when would one not want to start it?

start() on a KoinApplication register it in the StandAloneContext and allow default use of Koin (by inject() ...). A better naming with that also? register() or toStandalone()?

it think DSLs read nicest when they stick to declarative

ok, yep :)

Sloy commented 5 years ago

Hi! I updated my performance test project with the new alpha: https://github.com/Sloy/android-dependency-injection-performance/compare/koin2

Here are some results in a low end device: Samsung j5nlte with Android 6.0.1

The improvement is huge. There might be room for improvement still, but at least it feels production-ready in terms of performance. Also, there's still that strange impact when loading Java classes. I'm not sure where's that coming from.

Test:	Koin 1.0.1 + Kotlin
Startup:	1121,12 ms
Min-Max:	268,89-290,61 ms
Average:	271,42 ms

Test:	Koin 1.0.1 + Java
Startup:	1578,65 ms
Min-Max:	404,19-416,20 ms
Average:	406,65 ms

Test:	Koin 2.0.0 + Kotlin
Startup:	709,51 ms
Min-Max:	11,80-19,02 ms
Average:	12,41 ms

Test:	Koin 2.0.0 + Java
Startup:	1423,47 ms
Min-Max:	11,97-16,32 ms
Average:	12,48 ms

Test:	Kodein + Kotlin
Startup:	535,60 ms
Min-Max:	8,24-16,70 ms
Average:	8,60 ms

Test:	Kodein + Java
Startup:	506,22 ms
Min-Max:	8,78-11,80 ms
Average:	9,11 ms

Test:	Dagger2 + Kotlin
Startup:	41,53 ms
Min-Max:	0,24-6,26 ms
Average:	0,31 ms

Test:	Dagger2 + Java
Startup:	41,21 ms
Min-Max:	0,21-6,02 ms
Average:	0,28 ms

Test:	Custom + Kotlin
Startup:	408,04 ms
Min-Max:	0,68-0,82 ms
Average:	0,70 ms

Test:	Custom + Java
Startup:	405,69 ms
Min-Max:	0,82-1,05 ms
Average:	0,84 ms

arnaudgiuliani commented 5 years ago

Cool. Thanks for your benchmark.

arnaudgiuliani commented 5 years ago

Hi, here is a new perfs improvments with 2.0.0-alpha-3

Here some new perfs, done with the sloy app on my LG G4 (helped me fixed some perfs again):

I/DI-TEST: **Custom** | 3,18 ms | 3,38 ms  | 0,52 ms | 0,61 ms
I/DI-TEST: **Katana** | 8,83 ms | 8,34 ms  | 1,57 ms | 1,46 ms
I/DI-TEST: **Koin** | 40,55 ms | 40,08 ms  | 1,81 ms | 1,80 ms
I/DI-TEST: **Kodein** | 57,77 ms | 59,23 ms  | 6,14 ms | 6,06 ms
I/DI-TEST: **Dagger** | 0,01 ms | 0,01 ms  | 0,18 ms | 0,15 ms

(seems that Dagger's resolution is already done - should be at least need the time to create all graph object) @Sloy I have some suggestions for your test: https://github.com/arnaudgiuliani/android-dependency-injection-performance/commit/a4571d3e9d97bc2d05bc8f02df387fbf19fef228

--

Starting DSL is now like more declarative:

fun main(vararg args: String) {

    startKoin {
        logger()
        modules(coffeeAppModule)
    }

}

I've have a now introduced the GlobalContext concept to replace the old StandAloneContext which tells more what is it clearly now: a global context resolution.

Let's add the Androidx Fragment factory next!

I need to make some doc now :)

Sloy commented 5 years ago

@arnaudgiuliani thanks for the tip! I just changed the code an the stats. Nice improvement on alpha-3 👍 👏

erickok commented 5 years ago

So far so good. Tested on an app woth (so far) ~350 definitions. Minor changes were required only.

R4md4c commented 5 years ago

I've tried 2.0.0 and seems that there is something broken with the scopes.

I have a BaseFragment that does bindScope(getOrCreateScope(SCOPE_FRAGMENT)). And have a fragment stack (extending BaseFragment) of fragments A->B.

With Koin 2.0.0, when I keep popping the stack by pressing back to return to launcher it crashes with this exception.

java.lang.RuntimeException: Unable to destroy activity {de.r4md4c.gamedealz/de.r4md4c.gamedealz.home.HomeActivity}: java.lang.RuntimeException: Failed to call observer method
        at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4458)
        at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4476)
        at android.app.servertransaction.DestroyActivityItem.execute(DestroyActivityItem.java:39)
        at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:145)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.RuntimeException: Failed to call observer method
        at androidx.lifecycle.ClassesInfoCache$MethodReference.invokeCallback(ClassesInfoCache.java:225)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeMethodsForEvent(ClassesInfoCache.java:193)
        at androidx.lifecycle.ClassesInfoCache$CallbackInfo.invokeCallbacks(ClassesInfoCache.java:184)
        at androidx.lifecycle.ReflectiveGenericLifecycleObserver.onStateChanged(ReflectiveGenericLifecycleObserver.java:36)
        at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.java:355)
        at androidx.lifecycle.LifecycleRegistry.backwardPass(LifecycleRegistry.java:309)
        at androidx.lifecycle.LifecycleRegistry.sync(LifecycleRegistry.java:328)
        at androidx.lifecycle.LifecycleRegistry.moveToState(LifecycleRegistry.java:138)
        at androidx.lifecycle.LifecycleRegistry.handleLifecycleEvent(LifecycleRegistry.java:124)
        at androidx.fragment.app.Fragment.performDestroy(Fragment.java:2693)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:1016)
        at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManagerImpl.java:1229)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:1295)
        at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManagerImpl.java:2605)
        at androidx.fragment.app.FragmentManagerImpl.dispatchDestroy(FragmentManagerImpl.java:2596)
        at androidx.fragment.app.Fragment.performDestroy(Fragment.java:2695)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:1016)
        at androidx.fragment.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManagerImpl.java:1229)
        at androidx.fragment.app.FragmentManagerImpl.moveToState(FragmentManagerImpl.java:1295)
        at androidx.fragment.app.FragmentManagerImpl.dispatchStateChange(FragmentManagerImpl.java:2605)
        at androidx.fragment.app.FragmentManagerImpl.dispatchDestroy(FragmentManagerImpl.java:2596)
        at androidx.fragment.app.FragmentController.dispatchDestroy(FragmentController.java:318)
        at androidx.fragment.app.FragmentActivity.onDestroy(FragmentActivity.java:354)
        at androidx.appcompat.app.AppCompatActivity.onDestroy(AppCompatActivity.java:211)
        at android.app.Activity.performDestroy(Activity.java:7395)
        at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1306)
        at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4443)
        at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4476) 
        at android.app.servertransaction.DestroyActivityItem.execute(DestroyActivityItem.java:39) 
        at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:145) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:193) 
        at android.app.ActivityThread.main(ActivityThread.java:6669) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 
     Caused by: java.lang.IllegalStateException: Scope not found 'd023d781-7f16-4358-ac91-13d8ac5e3327'
        at org.koin.core.Koin.closeScope$koin_core(Koin.kt:182)
        at org.koin.core.scope.Scope.close(Scope.kt:41)
        at org.koin.androidx.scope.ScopeObserver.onDestroy(ScopeObserver.kt:54)

I believe that is because Koin has already closed this scope when fragment B was popped.

With Koin 1.0.2 this crash doesn't happen.

arnaudgiuliani commented 5 years ago

Scope API is still in progress 👍

kenyee commented 5 years ago

For Java, can there be @Inject annotation support instead of needing to do this? private Lazy presenter = inject(MySimplePresenter.class);

arnaudgiuliani commented 5 years ago

no annotation processing in Koin's target for now.

edwardhuerta commented 5 years ago

One of the reasons I use Koin is to avoid annotation processing. Will it be optional in the planned future releases?

erickok commented 5 years ago

There is nothing to be made optional, because there is no annotation processing at all. And indeed there should not be (imho). Any such thing could, if one wants it, be made as a seperate library.

IgorGanapolsky commented 5 years ago

For some reaason the koinApplication api doesn't work for me. I get this compilation error: koinApplication { modules(coreModules + libModules + featureModules) }.checkModules()

None of the following functions can be called with the arguments supplied.

mahmed1987 commented 5 years ago

I am using the latest Koin version 2.0.0-rc-1 and have a simple test case in my androidTest folder.

class UserTestCase : KoinTest
{

    @Before
    fun before()
    {
        startKoin {
            modules(testModule1)
        }
    }

    @After
    fun after()
    {
        stopKoin()
    }

    @Test
    fun test()
    {

    }
}

val testModule1= module {

    single{ User(1,"Random","Random",false)}
}

I get "A Koin Application has already been started". Is this because my main application class also has a startKoin over there?.

kenyee commented 5 years ago

in our tests, I always call stopKoin before startKoin...don't do it in the @after

ispbox commented 5 years ago

I get "A Koin Application has already been started". Is this because my main application class also has a startKoin over there?.

Yes, it is the most relevant reason in case you use instrumented tests (they are executed on android device and thus android application class is instantiated => it causes Koin initialization as a side effect.

In unit tests you should initialize Koin by yourself.

NurseyitTursunkulov commented 5 years ago

No tests found for given includes: HelloAppTest when I want to run sample test. Can you help please

prabhu73 commented 4 years ago

java.lang.IllegalStateException: No Koin Context configured. Please use startKoin or koinApplication DSL.

`@ExperimentalCoroutinesApi @InternalCoroutinesApi class OmdbServicesTest : AutoCloseKoinTest() {

@get:Rule
var rule = InstantTaskExecutorRule()

@get:Rule
var mockWebServer = MockWebServerRule()

private val mockedApplication = mock(OmdbApplication::class.java)

private val service: OMDBRemoteServices = get()

@Before
fun before() {
    val serviceModule by lazy {
        module {
            fun provideGson(): Gson =
                GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.IDENTITY).create()

            fun provideOkHttpClient(): OkHttpClient =
                OkHttpClient.Builder()
                    .build()

            fun provideOmdbService(): OMDBRemoteServices =
                Retrofit.Builder()
                    .baseUrl(BuildConfig.BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create(get()))
                    .client(get())
                    .build()
                    .create(OMDBRemoteServices::class.java)

            single { provideGson() }
            single { provideOkHttpClient() }
            single { provideOmdbService() }
        }
    }

    stopKoin()
    startKoin {
        androidContext(mockedApplication)
        modules(serviceModule)
    }
}

@Test
fun omdbListTest() {
    val execute = service.getOmdbSearchData(
        BuildConfig.API_KEY,
        "friend",
        1
    ).execute()
    assertTrue(execute.isSuccessful && execute.body() != null)
}

}`

I am getting the below while executing the above test class

`java.lang.IllegalStateException: No Koin Context configured. Please use startKoin or koinApplication DSL.

at org.koin.core.context.KoinContextHandler.getContext(KoinContextHandler.kt:29)
at org.koin.core.context.KoinContextHandler.get(KoinContextHandler.kt:35)
at org.koin.core.KoinComponent$DefaultImpls.getKoin(KoinComponent.kt:32)
at org.koin.test.KoinTest$DefaultImpls.getKoin(KoinTest.kt)
at org.koin.test.AutoCloseKoinTest.getKoin(AutoCloseKoinTest.kt:26)
at com.myomdbapplication.service.OmdbServicesTest.<init>(OmdbServicesTest.kt:86)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:250)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:260)
at org.junit.runners.BlockJUnit4ClassRunner$2.runReflectiveCall(BlockJUnit4ClassRunner.java:309)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)`

arora-ankit1 commented 4 years ago

java.lang.IllegalStateException: No Koin Context configured. Please use startKoin or koinApplication DSL.

`@ExperimentalCoroutinesApi @InternalCoroutinesApi class OmdbServicesTest : AutoCloseKoinTest() {

@get:Rule
var rule = InstantTaskExecutorRule()

@get:Rule
var mockWebServer = MockWebServerRule()

private val mockedApplication = mock(OmdbApplication::class.java)

private val service: OMDBRemoteServices = get()

@Before
fun before() {
    val serviceModule by lazy {
        module {
            fun provideGson(): Gson =
                GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.IDENTITY).create()

            fun provideOkHttpClient(): OkHttpClient =
                OkHttpClient.Builder()
                    .build()

            fun provideOmdbService(): OMDBRemoteServices =
                Retrofit.Builder()
                    .baseUrl(BuildConfig.BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create(get()))
                    .client(get())
                    .build()
                    .create(OMDBRemoteServices::class.java)

            single { provideGson() }
            single { provideOkHttpClient() }
            single { provideOmdbService() }
        }
    }

    stopKoin()
    startKoin {
        androidContext(mockedApplication)
        modules(serviceModule)
    }
}

@Test
fun omdbListTest() {
    val execute = service.getOmdbSearchData(
        BuildConfig.API_KEY,
        "friend",
        1
    ).execute()
    assertTrue(execute.isSuccessful && execute.body() != null)
}

}`

I am getting the below while executing the above test class

`java.lang.IllegalStateException: No Koin Context configured. Please use startKoin or koinApplication DSL.

at org.koin.core.context.KoinContextHandler.getContext(KoinContextHandler.kt:29)
at org.koin.core.context.KoinContextHandler.get(KoinContextHandler.kt:35)
at org.koin.core.KoinComponent$DefaultImpls.getKoin(KoinComponent.kt:32)
at org.koin.test.KoinTest$DefaultImpls.getKoin(KoinTest.kt)
at org.koin.test.AutoCloseKoinTest.getKoin(AutoCloseKoinTest.kt:26)
at com.myomdbapplication.service.OmdbServicesTest.<init>(OmdbServicesTest.kt:86)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:250)
at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:260)
at org.junit.runners.BlockJUnit4ClassRunner$2.runReflectiveCall(BlockJUnit4ClassRunner.java:309)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)`

try checking that have you registered the Application in manifest file and use androidLogger(Level.ERROR) for logging it worked for me, I was getting the same error

InsertKoinIO / koin

[Team] Testing Koin 2.0.0 #298

java.lang.IllegalStateException: No Koin Context configured. Please use startKoin or koinApplication DSL.

java.lang.IllegalStateException: No Koin Context configured. Please use startKoin or koinApplication DSL.