The problem I have with this piece of code is that I can't add anything to the test class. Everything in TestModule can't be mocked.
I run my android test with AndroidJUnit4 and Mockito. We use Android X and Dagger lib.
problem inject object in test.
code
#RunWith(AndroidJUnit4.class)
#LargeTest
public class AppHelperTest {
#Inject
public AppHelper appHelper;
#Before
public void setup() {
Application application = (Application) InstrumentationRegistry.getInstrumentation().getTargetContext().getApplicationContext();
TestComponent component = DaggerTestComponent.builder().application(application).appModule(new TestModules()).build();
component.inject(this);
}
#Test
public void checkVersion_appHelper_Subscribed() {
verify(appHelper).checkVersion().test().assertSubscribed();
}
}
TestRunner MockitoException Mockito cannot mock this class: AppHelper
Underlying exception : java.lang.UnsupportedOperationException:
Cannot define class using reflection
at com.app.di.modules.TestModules.getAppHelper(TestModules.java:72)
at com.app.di.modules.TestModules_GetAppHelperFactory.getAppHelper(TestModules_GetAppHelperFactory.java:33)
at com.app.di.modules.TestModules_GetAppHelperFactory.get(TestModules_GetAppHelperFactory.java:25)
at com.app.di.modules.TestModules_GetAppHelperFactory.get(TestModules_GetAppHelperFactory.java:8)
at dagger.internal.DoubleCheck.get(DoubleCheck.java:47)
at com.app.di.DaggerTestComponent.injectAppHelperTest(DaggerTestComponent.java:450)
at com.app.di.DaggerTestComponent.inject(DaggerTestComponent.java:435)
at com.app.ui.helper.AppHelperTest.setup(AppHelperTest.java:46)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at androidx.test.internal.runner.junit4.statement.RunBefores.evaluate(RunBefores.java:76)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at androidx.test.ext.junit.runners.AndroidJUnit4.run(AndroidJUnit4.java:104)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:392)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2252)
Caused by: java.lang.UnsupportedOperationException: Cannot define class using reflection
at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection$Dispatcher$Unavailable.defineClass(ClassInjector.java:819)
at net.bytebuddy.dynamic.loading.ClassInjector$UsingReflection.inject(ClassInjector.java:183)
at net.bytebuddy.dynamic.loading.ClassLoadingStrategy$Default$InjectionDispatcher.l
With Mockito version 3.2.0 we ship "native" Android support. To enable Android support, add the mockito-android library as dependency to your project. This artifact is published to the same Mockito organization and can be imported for Android as follows:
repositories {
jcenter()
}
dependencies {
testCompile "org.mockito:mockito-core:+"
androidTestCompile "org.mockito:mockito-android:+"
}
Related
I have an Android Activity that implements an delegate interface which is called IMeetingRoomDelegate
interface IMeetingRoomDelegate {
fun onMeetingRoomFragmentClicked(homeFragment: MeetingRoomHomeFragment, meetingRoom: ParcelableMeetingRoomData)
}
I want to always assure that my Activity is always an implementation of IMeetingRoomDelegate.
How would I check this in Kotlin? I so far have this:
#RunWith(AndroidJUnit4::class)
class GivenTheMainActivityIsLoaded {
#get:Rule
val activityRule = ActivityTestRule<MainActivity>(MainActivity::class.java)
private lateinit var mainActivity: MainActivity
#Before
fun setup() {
this.mainActivity = activityRule.activity
}
#Test
fun thenThereShouldAlsoBeAnInstanceOfIMeetingRoomDelegatePresent() {
assertTrue(implementsInterface(this.mainActivity::class.java))
}
private fun implementsInterface(interf: Class<*>): Boolean {
return interf is IMeetingRoomDelegate
}
}
I've tried seeing what the issue is myself but the test runner is barely giving anything substantial away.
The error
java.lang.AssertionError
at org.junit.Assert.fail(Assert.java:86)
at org.junit.Assert.assertTrue(Assert.java:41)
at org.junit.Assert.assertTrue(Assert.java:52)
at activities.GivenTheMainActivityIsLoaded.thenThereShouldAlsoBeAnInstanceOfIMeetingRoomDelegatePresent(MainActivitySpec.kt:54)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at androidx.test.internal.runner.junit4.statement.RunBefores.evaluate(RunBefores.java:80)
at androidx.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:527)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at androidx.test.runner.AndroidJUnit4.run(AndroidJUnit4.java:104)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:392)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2189)
Tests ran to completion.
You could use the reified generics instead of asserting the reflections:
#Test
fun thenThereShouldAlsoBeAnInstanceOfIMeetingRoomDelegatePresent() {
assertTrue(this.mainActivity.implementsInterface())
}
private inline fun <reified T> T.implementsInterface(): Boolean {
return this is IMeetingRoomDelegate
}
I've tried today the new android testing support lib. I need the write external storage permission for my tests so I've created the following test with the new GrantPermissionRule.
ExternalDirTest.java
#Rule
public GrantPermissionRule mRuntimePermissionRule = GrantPermissionRule.grant(Manifest.permission.WRITE_EXTERNAL_STORAGE);
#Test
public void test() throws IOException {
Application.getApplication().createDir();
}
Application.java
public void createDir() throws IOException {
new File(Environment.getExternalStorageDirectory() + "/test").createNewFile();
}
Officially I get the permission (visible in the app settings). Nevertheless I get the following exception:
java.io.IOException: Permission denied
at java.io.UnixFileSystem.createFileExclusively0(Native Method)
at java.io.UnixFileSystem.createFileExclusively(UnixFileSystem.java:280)
at java.io.File.createNewFile(File.java:948)
at test.app.directory.Application.createDir(EarApplication.java:253)
at test.app.directory.ExternalDirTest.test(ExternalDirTest.java:24)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at android.support.test.rule.GrantPermissionRule$RequestPermissionStatement.evaluate(GrantPermissionRule.java:109)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:58)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:369)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1932)
If I test the code manual it works perfectly.
Has someone facing the same problem or is it maybe a bug in the library itself?
Should now be fixed in version 1.0.2-alpha2
See https://issuetracker.google.com/issues/64389280
I can't initialize MockWebServer on androidTest folder. I've already added this line on my gradle
androidTestCompile('com.squareup.okhttp3:mockwebserver:3.6.0') {
exclude group: 'com.squareup.okio', module: 'okio'
exclude group: 'com.squareup.okhttp3', module: 'okhttp'
}.
I tried to follow the implementation from https://github.com/riggaroo/android-retrofit-test-examples. I've cloned the project, change the version of MockWebServer used by this example to the latest one and it still works fine but the implementation from my project still gives me same error.
java.lang.NoSuchMethodError: No static method initializeInstanceForTests()V in class Ld/a/a; or its super classes (declaration of 'd.a.a' appears in /data/app/com.agri.fma-2/base.apk)
at okhttp3.mockwebserver.MockWebServer.<clinit>(MockWebServer.java:101)
at com.agri.fma.activity.TestInputTenantActivity.setUp(TestInputTenantActivity.java:68)
at java.lang.reflect.Method.invoke(Native Method)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at android.support.test.internal.statement.UiThreadStatement.evaluate(UiThreadStatement.java:55)
at android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:270)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1886)
Below, TestInputTenantActivity code
public class TestInputTenantActivity {
#Rule public IntentsTestRule<InputTenantActivity> activityTestRule =
new IntentsTestRule<>(InputTenantActivity.class, false, false);
#Inject InputTenantView view;
#Mock
SharedPreferenceManager sharedPreferenceManager;
private TestMainApplication app;
private MockWebServer mockWebServer;
#Before
public void setUp() throws Exception {
app = (TestMainApplication) InstrumentationRegistry.getInstrumentation()
.getTargetContext().getApplicationContext();
DaggerTestInputTenantComponent.builder().testAppComponent(app.getAppComponent())
.testInputTenantModule(new TestInputTenantModule())
.build().inject(this);
mockWebServer = new MockWebServer();
mockWebServer.start();
}
#Test
public void testEmptyTenant(){
activityTestRule.launchActivity(new Intent());
onView(withId(R.id.tenant)).perform(typeText(""));
onView(withId(R.id.action_next)).perform(click());
onView(withId(R.id.tenant)).check(matches(hasErrorText(app.getString(R.string.empty_tenant))));
intended((hasComponent(new ComponentName(getTargetContext(), LoginActivity.class))), times(0));
}
#Test
public void testTenantWithWhiteSpace(){
String errorMessage = String.format(
Locale.US,
app.getString(R.string.invalid_string_error),
"Tenant name");
activityTestRule.launchActivity(new Intent());
onView(withId(R.id.tenant)).perform(typeText(TENANT_WITH_WHITESPACE));
onView(withId(R.id.action_next)).perform(click());
onView(withId(R.id.tenant)).check(matches(hasErrorText(errorMessage)));
intended((hasComponent(new ComponentName(getTargetContext(), LoginActivity.class))), times(0));
}
#Test
public void testValidTenant(){
activityTestRule.launchActivity(new Intent());
onView(withId(R.id.tenant)).perform(typeText(VALID_TENANT));
onView(withId(R.id.action_next)).perform(click());
intended(hasComponent(new ComponentName(getTargetContext(), LoginActivity.class)));
}
#After
public void tearDown() throws Exception {
mockWebServer.shutdown();
}
}
Below, is a simple test I wrote using the Espresso Instrument Testing Framework.
MainActivity mActivity;
#Rule
public ActivityTestRule<MainActivity> mActivityRule = new ActivityTestRule<>(MainActivity.class);
#Before
public void beforeClass() {
setMasterPolicyTimeout(45, TimeUnit.SECONDS);
setIdlingResourceTimeout(45, TimeUnit.SECONDS);
}
#Test
public void basicInstrumentationTestForTitle() throws Exception {
UiDevice uiDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
uiDevice.wakeUp();
mActivity = mActivityRule.getActivity();
onView(withId(R.id.title)).check(matches(withText("Title")));
}
Now this test executes fine when I run it on an Android Emulator (Nexus S API 23) as provided by Android Studio. However, when I run the same test on an android device, I get the following error.
android.support.test.espresso.AppNotIdleException: Looped for 85 iterations over 45 SECONDS. The following Idle Conditions failed ASYNC_TASKS_HAVE_IDLED.
at dalvik.system.VMStack.getThreadStackTrace(Native Method)
at java.lang.Thread.getStackTrace(Thread.java:580)
at android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:92)
at android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:56)
at android.support.test.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:184)
at android.support.test.espresso.ViewInteraction.check(ViewInteraction.java:158)
at activities.ActivityInstrumentationTest.basicInstrumentationTestForTitle(ActivityInstrumentationTest.java:71)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at android.support.test.internal.statement.UiThreadStatement.evaluate(UiThreadStatement.java:55)
at android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:270)
at org.junit.rules.RunRules.evaluate(RunRules.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runners.Suite.runChild(Suite.java:128)
at org.junit.runners.Suite.runChild(Suite.java:27)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:59)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:262)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1867)
For reference, I have turned off animation options on the test device.
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
Can someone please help to solve this? Also if possible please explain how it worked on the emulator but not on the actual device.
In my test how can I mock a class I wrote?
Here is my test code:
import android.support.test.runner.AndroidJUnit4;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
#RunWith(AndroidJUnit4.class)
public class SampleTest {
#Mock
Sample mySample;
#Before
public void setup() {
MockitoAnnotations.initMocks(this);
}
#Test
public void shouldMockSample() {
verify(mySample, never()).neverCallMe();
}
}
Sample is just a dummy class.
public class Sample {
public void neverCallMe() {}
}
How do I get rid of this error?
java.lang.VerifyError: org/mockito/cglib/core/ReflectUtils at
org.mockito.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:167)
at
org.mockito.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at
org.mockito.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:217)
at
org.mockito.cglib.core.KeyFactory$Generator.create(KeyFactory.java:145)
at org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:117) at
org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:109) at
org.mockito.cglib.core.KeyFactory.create(KeyFactory.java:105) at
org.mockito.cglib.proxy.Enhancer.(Enhancer.java:70) at
org.mockito.internal.creation.cglib.ClassImposterizer.createProxyClass(ClassImposterizer.java:95)
at
org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:57)
at
org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:49)
at
org.mockito.internal.creation.cglib.CglibMockMaker.createMock(CglibMockMaker.java:24)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33) at
org.mockito.internal.MockitoCore.mock(MockitoCore.java:59) at
org.mockito.Mockito.spy(Mockito.java:1368)
at java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
org.junit.runners.Suite.runChild(Suite.java:128) at
org.junit.runners.Suite.runChild(Suite.java:27) at
org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
org.junit.runner.JUnitCore.run(JUnitCore.java:137) at
org.junit.runner.JUnitCore.run(JUnitCore.java:115) at
android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:54)
at
android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:228)
at
android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1741)
java.lang.NoClassDefFoundError:
org/mockito/internal/creation/cglib/ClassImposterizer$3 at
org.mockito.internal.creation.cglib.ClassImposterizer.createProxyClass(ClassImposterizer.java:95)
at
org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:57)
at
org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:49)
at
org.mockito.internal.creation.cglib.CglibMockMaker.createMock(CglibMockMaker.java:24)
at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33) at
org.mockito.internal.MockitoCore.mock(MockitoCore.java:59) at
org.mockito.Mockito.spy(Mockito.java:1368)
at java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:515) at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
org.junit.runners.Suite.runChild(Suite.java:128) at
org.junit.runners.Suite.runChild(Suite.java:27) at
org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
org.junit.runner.JUnitCore.run(JUnitCore.java:137) at
org.junit.runner.JUnitCore.run(JUnitCore.java:115) at
android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:54)
at
android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:228)
at
android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1741)
I am using the following dependencies in my gradle file:
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.2.1'
androidTestCompile 'com.android.support:support-annotations:22.2.1'
androidTestCompile 'org.mockito:mockito-core:1.10.19'
androidTestCompile 'org.objenesis:objenesis:2.1'
androidTestCompile 'org.hamcrest:hamcrest-library:1.3'
androidTestCompile 'com.android.support.test:runner:0.3'
androidTestCompile 'com.android.support.test:rules:0.3'
androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2'
testCompile 'org.mockito:mockito-core:1.10.19'
testCompile 'org.hamcrest:hamcrest-library:1.3'
testCompile 'junit:junit:4.12'
testCompile 'org.robolectric:robolectric:3.0'
}
Since version 2.6.+, Mockito added a new artifact that works for Android without the need of any other dependency (i.e. no need to import DexMaker anymore). (Reference)
Just use org.mockito:mockito-android as a dependency for your instrumented unit tests (androidTest). You would still use the usual org.mockito:mockito-core for your local unit tests.
Example:
dependencies {
...
testImplemenation 'org.mockito:mockito-core:2.7.15'
androidTestImplementation 'org.mockito:mockito-android:2.7.15'
...
}
By default, Mockito uses CGLib or ByteBuddy, both of which generate .class files. You're running on an Android device or emulator, so .class files won't help; you need .dex format instead.
Adjust your dependencies to use DexMaker, which will override Mockito's default and allow mocking in Android environments.
add these dependencies
androidTestImplementation("androidx.test.ext:junit:1.1.3")
androidTestImplementation("com.linkedin.dexmaker:dexmaker-mockito-inline:2.28.1")
testImplementation("junit:junit:4.13.2")
testImplementation("androidx.test:core:1.4.0")
testImplementation("org.mockito:mockito-android:4.2.0")
testImplementation("org.mockito:mockito-inline:4.2.0")
testImplementation("org.mockito:mockito-core:4.2.0")
and you can use mockito like this:
#RunWith(AndroidJUnit4::class)
class MainActivityTest {
#get:Rule
val composeTestRule = createComposeRule()
private lateinit var viewModel: HomeScreenViewModel
#Mock
private val sampleUseCase = mock(SampleUseCase::class.java)
#Before
fun setup() {
runBlockingTest {
`when`(sampleUseCase.invoke(anyInt(), anyString())).thenReturn(
NetworkDataState.Success(listOf(
SampleObject(id = 1),
SampleObject(id = 2),
SampleObject(id = 3),
))
)
viewModel = HomeScreenViewModel(
sampleUseCase
)
}
}
#Test
fun navigationTest() {
composeTestRule.setContent {
AppTheme {
MainScreen(
navController = rememberNavController(),
viewModel = viewModel
)
}
}
composeTestRule
.onNodeWithContentDescription("chips")
.performScrollToIndex(4)
}
}