I'm stuck trying to mock some stuff with mockk:
I have the following setup on gradle
root:
|-- App (just a sample app for the SDK)
|-- SDK (SDK we develop) << apply plugin: 'com.android.library'
|-- SDKimpl.kt
|-- Foo (wrapper around a .jar library) << apply plugin: 'com.android.library'
|-- Foo.kt
So I'm writing an androidTest for the SDK and trying to mock Foo.kt.
There's nothing unusual about Foo class, just direct class Foo(private val someParams) {
So using androidTestImplementation "io.mockk:mockk-android:1.8.13" the mock goes:
val mock: Foo = mockk()
// val mock: Foo = mockkClass(Foo::class) // also tried this
every { mock.getData() } returns listOf("1", "2", "3")
I'm always getting the following crash:
io.mockk.MockKException: Missing calls inside every { ... } block.
at io.mockk.impl.recording.states.StubbingState.checkMissingCalls(StubbingState.kt:14)
at io.mockk.impl.recording.states.StubbingState.recordingDone(StubbingState.kt:8)
at io.mockk.impl.recording.CommonCallRecorder.done(CommonCallRecorder.kt:42)
Also tried just to gather information:
running inside JVM test folder. It gets mocked without issues, but I can't run my test as JVM
running androidTest inside Foo module. Got the same crash
using mockkClass(Foo::class). Got some crash
using annotation #MockK and MockKAnnotations.init(this). Got some crash.
added Log.d before every { line and inside getData() method and it seems the actual real method from the class is getting called during the mock setup. That seems super weird to me.
Any idea what's going wrong here?
edit:
as requested, full code. I'm current working on an isolated project to try to isolate the error, so Foo is just:
class Foo {
fun getData(): String {
Log.d(TAG, "invoked foo.getData()")
return "trolololo"
}
}
and then I have FooTest in androidTest:
class FooTest {
#Test
fun mock_foo() {
val foo = mockk<Foo>()
every { foo.getData() } returns "zero"
assertEquals("zero", foo.getData())
}
}
It seems to be a Mockk opened issue: https://github.com/mockk/mockk/issues/182
2 possible quick fixes (pick one):
Run the Instrumented Tests in an emulator >= Android-P
Set Foo class as open (and the method(s) you want to mock too)
Try to check the official guide and see what is missing.
In my case, I tried to mock an extension in Kotlin but missed the mockkStatic
fun Date.asMyTime() : DateTime = DateTime(this, DateTimeZone.getDefault())
mockkStatic("packageName.FileNameKt") // This is what I was missing
every {
DateTime().asMyTime()
} returns mock(DateTime::class.java)
In my case I forgot to spyk the class I was applying every {...} to. 😳
val presenter = spyk(MyPresenter())
every { view.myFun(any()) } returns Unit
In my case, I've missed
#Before
fun setUp() {
MockKAnnotations.init(this)
}
In my case I tried to mock using mock() function instead mockk() (double k)
Make sure the object is really a mock, not the real object.
For instance:
- Sdk sdk = Sdk()
+ Sdk sdk = mockk()
every { sdk.crypto } returns mockk()
My problem was that I used a java class without getters
public class KeyStorePasswordPair {
public KeyStore keyStore;
public String keyPassword;
public KeyStorePasswordPair(KeyStore keyStore, String keyPassword) {
this.keyStore = keyStore;
this.keyPassword = keyPassword;
}
}
I needed to add getters for the variables to make mockking work:
public class KeyStorePasswordPair {
public KeyStore getKeyStore() {
return keyStore;
}
public String getKeyPassword() {
return keyPassword;
}
private KeyStore keyStore;
private String keyPassword;
public KeyStorePasswordPair(KeyStore keyStore, String keyPassword) {
this.keyStore = keyStore;
this.keyPassword = keyPassword;
}
}
Mockk Missing calls inside every { ... } block
may also be thrown when you have an every block defined on an object that is not a mockk, for example:
You define stub behavior like this
every { foo.getData() } returns DATA
and then try to:
every { DATA.getVersion() } returns VERSION
Where MY_THING and VERSION objects are declared (and instantiated) in the test class.
The error message is not very informative and a bit misleading in that case.
try like this
`when`(mock.getData()).thenReturn(listOf("1", "2", "3"))
Related
I created a validation use case in which I'm validating the input using isDigitsOnly that use TextUtils internally.
override fun isDigitsOnly(size: String): Boolean {
return !size.trim().isDigitsOnly()
}
when I tried to test it, I got this error
Method isDigitsOnly in android.text.TextUtils not mocked
Does anyone know how I can mock the textUtils in my test class
#RunWith(MockitoJUnitRunner::class)
class ValidationInputImplTest {
#Mock
private lateinit var mMockTextUtils: TextUtils
private lateinit var validationInputImpl: ValidationInputImpl
#Before
fun setUp() {
validationInputImpl = ValidationInputImpl()
}
#Test
fun `contains only digits, returns success`() {
val input = "66"
val result = validationInputImpl(input)
assertTrue(result is ValidationResult.Success)
}
}
At the time of writing the answer,you cannot do that. Because the android code ,that you see is not actual code. You cannot create unit test for that. The default implementation of the methods in android.jar is to throw exception.
One thing you can do is, adding the below in build.gradle file.
But it make the android classes not to throw exception. But it will always return default value. So the test result may actually not work. It is strictly not recommended.
android {
testOptions {
unitTests.returnDefaultValues = true
}
}
The better way to do copy the code from android source and paste the file under src/test/java folder with package name as android.text .
Link to Answer
I am working on an Android library and I am writing an instrumented test for it using UI Automator and Mockk.
The library has a class called InstallManager which will install stuff on the device. I want the InstallManager to throw an exception so that I can test if an error notification will be shown.
All I do is finding the Update (Install) button and click on it
val updateButtonComponent = device.findObject(By.text(updateButtonText))
updateButtonComponent.click()
How can I mock/manipulate the InstallManager which is being used by the library during the automated test?
What I tried:
I tried mocking the InstallManager before running the automated test, hoping that UI Automator would magically know that it should use this mocked InstallManager. But (as I thought already) it does not work like that...
private fun breakInstallManager() {
installManager = spyk(InstallManager(mockk(relaxed = true), nonExistentFile))
every { installManager.getString(any()) } returns ""
every { installManager.packageName } returns ""
}
For mocking InstallManager class in android tests, call MockKAnnotations.init method. Then in the test method you can specify the return value
#RelaxedMockK
private lateinit var installManager: InstallManager
#Before
fun setUp() {
MockKAnnotations.init(this)
// …
}
#Test
fun installManagerTest(){
every { installManager.getString(any()) } returns ""
every { installManager.packageName } returns ""
// …
}
I want to implement some UI Tests to assure that the code implemented today works for tomorrow but when trying to see if already UI tests implemented in the past works, it throws this error:
Caused by: io.mockk.MockKException: Failed matching mocking signature for left matchers: [any(), any()]
This happens on an every {} return Unit line which there's a object file called WakeUpTimeManager, that calls a .set(param1, param2) function and inside that function there are some inline functions which I think it could be causing the problem but I don't know. I tried searching on the internet but couldn't find a solution.
Here's the test that throws the error:
#Before
fun setup() {
mockkObject(WakeUpTimerManager)
every { WakeUpTimerManager.set(any(), any()) } returns Unit
}
Here's the function that is calling on every line
fun set(context: Context, timer: Timer) {
if (timer.atMillis < System.currentTimeMillis()) {
return
}
if (Preset.findByID(context, timer.presetID) == null) {
return
}
//This is an inline function
withGson {
PreferenceManager.getDefaultSharedPreferences(context).edit {
putString(PREF_WAKE_UP_TIMER, it.toJson(timer))
}
}
//This is an inline function
withAlarmManager(context) {
it.setAlarmClock(
AlarmManager.AlarmClockInfo(timer.atMillis, getPendingIntentForActivity(context)),
getPendingIntentForService(context, timer)
)
}
}
Question: Why does mockk throw this error? What's going on? Is there any solution for this?
try with mockkStatic(WakeUpTimerManager::class). For me mockkObject was not working either, but mockkStatic did
In my case I was using the wrong annotation for mocking dependencies.
I was using #MockBean from org.springframework.boot.test.mock.mockito.MockBean while I should have been using #MockkBean from com.ninjasquad.springmockk.MockkBean.
In my case I used type cast for any(). I wanted to test that a method viewModel.show(Message()) had invoked. But this method is overloaded (has signatures of different types), so I tried to cast parameter any() to Message.
// show is overloaded method
fun show(resourceId: Int) {}
fun show(text: String) {}
fun show(message: Message) {}
// But it threw the exception.
verify { viewModel.show(any() as Message) }
// This won't work because Message() object will be different
verify { viewModel.show(Message()) }
Maybe mocking for message will help, but not in my case.
// val message = mockk<Message>()
// every { Message() } returns message
// verify { viewModel.show(message) }
I had to add mockkStatic, because I used an extension method. For instance, fun ViewExtension.show():
mockkStatic(ViewExtension::class.java.name + "Kt") // Like "com.example...ViewExtensionKt"
Then mock a behaviour:
every { viewModel.show(Message()) } just Runs
verify { viewModel.show(any() as Message) }
Sometimes, especially with Dagger Hilt and global test modules that replace object instances with Mockk mocks, it's not entirely clear whether one works with the mock or the real object. For me it was exactly this - I had a missing dependency, so my real instance was not replaced with the mocked instance, so mockk answered with this really weird error:
io.mockk.MockKException: Failed matching mocking signature for
left matchers: [any()]
at io.mockk.impl.recording.SignatureMatcherDetector.detect(SignatureMatcherDetector.kt:99)
at io.mockk.impl.recording.states.RecordingState.signMatchers(RecordingState.kt:39)
at io.mockk.impl.recording.states.RecordingState.round(RecordingState.kt:31)
at io.mockk.impl.recording.CommonCallRecorder.round(CommonCallRecorder.kt:50)
at io.mockk.impl.eval.RecordedBlockEvaluator.record(RecordedBlockEvaluator.kt:63)
at io.mockk.impl.eval.VerifyBlockEvaluator.verify(VerifyBlockEvaluator.kt:30)
at io.mockk.MockKDsl.internalVerify(API.kt:119)
at io.mockk.MockKKt.verify(MockK.kt:149)
at io.mockk.MockKKt.verify$default(MockK.kt:140)
I'm running UI testing on Android devices using Appium. We recently migrated to JUnit5 and I'm attempting to utilize the #BeforeAll class to make sure the app is in a good state before we continue to the next class.
Currently, the tooltip in Android studio is indicating that the function is never used. In the log I'm seeing a junitException saying that the method must be static. I haven't implemented #TestInstance yet, I'd like to be able to use beforeAll without it for now. I'm just confused why it isn't working since my #beforeEach and #afterEach are both working. The error and code are below.
org.junit.platform.commons.JUnitException: #BeforeAll method 'public final void com.bypass.automation.BaseTest.healthcheck()' must be static unless the test class is annotated with #TestInstance(Lifecycle.PER_CLASS).
open class BaseTest {
lateinit var driver: AndroidDriver<MobileElement>
private val capabilities = DesiredCapabilities().apply {
setCapability(APPIUM_VERSION, "1.19.1")
setCapability(PLATFORM_NAME, "Android")
setCapability(DEVICE_NAME, "Android")
setCapability("appPackage", "com.ourpackage")
setCapability("appActivity", "com.ourpackage.PassthroughHomeActivity")
setCapability("automationName", "uiautomator2")
setCapability("skipDeviceInitialization", true)
setCapability("noReset", true)
setCapability("full-reset", false)
setCapability("enableMultiWindows", false)
setCapability("unlockType", "pin")
setCapability("unlockKey", "0000")
setCapability("newCommandTimeout", "120")
}
#BeforeAll
fun healthcheck() {
val currentActivity = driver.currentActivity()
println("Current activity is $currentActivity")
if (currentActivity.contains("StationSecurePayActivity")) {
println("Exiting Station Pay")
CreditCardEntryView(driver).clickBackButton()
}
when {
currentActivity.contains("kiosk") -> {
Thread.sleep(2000)
println("Exiting Kiosk")
KioskView(driver).exitKiosk()
println("Logging out")
LogInProviderUtil(driver).logOut()
}
currentActivity != ".LoginActivity" -> {
println("Logging out")
LogInProviderUtil(driver).logOut()
}
currentActivity.contains(".LoginActivity") -> {
println("Session was properly logged out. No action taken.")
}
}
}
#BeforeEach
fun setup() {
driver = AndroidDriver(URL("http://127.0.0.1:4750/wd/hub"), capabilities)
driver.manage()?.timeouts()?.implicitlyWait(30, SECONDS)
if (LogInProviderUtil(driver).isLoggedIn()){
LogInProviderUtil(driver).logOut()
}
}
#AfterEach
fun teardown() {
if (LogInProviderUtil(driver).isLoggedIn()){
LogInProviderUtil(driver).logOut()
driver.quit()
}
else {
driver.quit()
}
}
}
It will work. I believe that any method annotated with #BeforeAll must be static (unless the "per-class" test instance lifecycle is used). So it sounds to me like you should switch to that by adding this annotation to your test class: #TestInstance(Lifecycle.PER_CLASS)
Also, it is usual practice to make your setup and teardown methods public. Also, I recommend use of Selenium-Jupiter framework (https://github.com/bonigarcia/selenium-jupiter/blob/master/README.md#appium) . Good luck.
If you want to have an initialization block you may put it simply into
init{} method. And you don't have to annotate it.
I have a simple class with a private field.
class EmployeeData {
private var employeeAge: Int = 0
fun getAge(): Int {
return 1 + employeeAge
}
}
I am trying to test this private employeeAge with the following from official docs
#Test
fun testPrivateAge() {
val mock = spyk(EmployeeData())
every {
mock getProperty "employeeAge"
} propertyType Int::class answers { fieldValue + 6 }
every {
mock setProperty "employeeAge" value any<Int>()
} propertyType Int::class answers { fieldValue += value }
every { mock getProperty "employeeAge" } returns 33
every { mock setProperty "employeeAge" value less(5) } just Runs
assertEquals(10,mock.getAge())
}
I am receiving such exception from MockK
io.mockk.MockKException: Missing calls inside every { ... } block.
at io.mockk.impl.recording.states.StubbingState.checkMissingCalls(StubbingState.kt:14)
at io.mockk.impl.recording.states.StubbingState.recordingDone(StubbingState.kt:8)
Any clue on what's I am doing wrong? Official docs suggest using such technique against private properties but for me it doesn't work and I'm using latest on this moment version of MockK which is v1.10.0.
Though for private methods it is working like a charm. I am able to test the private method in this logic.
This is a problem with some Kotlin optimisations. According to MockK author "Brief explanation. It is nearly impossible to mock private properties as they don't have getter methods attached. This is kind of Kotlin optimisation and solution is major change."
More info can be found on these 2 Github issues:
https://github.com/mockk/mockk/issues/263
https://github.com/mockk/mockk/issues/104