I test custom view class which contain:
- android ui elements
- some logic
- static methods callings
- dagger2 dependencies
So i use next tools for testing
- Robolectric for UI elements mocking
- unit tests for logic testing
- PowerMock for static methods mocking
Robolectric + PowerMock integration problem is known and solution is known - https://github.com/robolectric/robolectric/wiki/Using-PowerMock
But with this solution dagger2 dependencies fail.
Attention to code.
My custom view:
public class ProgressTextView extends TextView {
private String defaultText;
private int fileSize;
private String fileSizeString;
private FileDownloaderI fileDownloader;
@Inject
FileDownloaderManager fileDownloaderManager;
Subscription downloadProgressChannelSubscription;
Subscription downloadCancelChannelSubscription;
public ProgressTextView(Context context) {
super(context);
provideDependency();
}
public ProgressTextView(Context context, AttributeSet attrs) {
super(context, attrs);
provideDependency();
}
public ProgressTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
provideDependency();
}
private void provideDependency() {
ApplicationSIP.get().applicationComponent().inject(this);
}
}
ProgressTextViewTest:
@RunWith(RobolectricUnitTestRunner.class) @PowerMockIgnore({ "org.mockito.*", "org.robolectric.*", "android.*" }) @PrepareForTest(Formatter.class) public class ProgressTextViewTest { Activity activity; @Mock FileDownloaderManager fileDownloaderManager; @Rule public PowerMockRule rule = new PowerMockRule(); @Before public void beforeTest() { // PowerMockito PowerMockito.mockStatic(Formatter.class); when(Formatter.formatFileSize(anyObject(), anyInt())).thenReturn(""); // Mockito MockitoAnnotations.initMocks(this); // Robolectic activity = Robolectric.setupActivity(Activity.class); } @Test public void init_FileDownloaded() { ProgressTextView progressTextView = new ProgressTextView(activity); } }
In ProgressTextViewTest error:
java.lang.NullPointerException
at com.tg.osip.ApplicationSIP.get(ApplicationSIP.java:64)
at com.tg.osip.ui.general.views.ProgressTextView.provideDependency(ProgressTextView.java:56)
at com.tg.osip.ui.general.views.ProgressTextView.<init>(ProgressTextView.java:42)
at com.tg.osip.ui.general.views.ProgressTextViewTest.init_FileDownloaded(ProgressTextViewTest.java:72)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
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 org.powermock.modules.junit4.rule.PowerMockStatement$1.run(PowerMockRule.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at org.powermock.reflect.internal.WhiteboxImpl.performMethodInvocation(WhiteboxImpl.java:1873)
at org.powermock.reflect.internal.WhiteboxImpl.doInvokeMethod(WhiteboxImpl.java:773)
at org.powermock.reflect.internal.WhiteboxImpl.invokeMethod(WhiteboxImpl.java:638)
at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:401)
at org.powermock.classloading.ClassloaderExecutor.execute(ClassloaderExecutor.java:98)
at org.powermock.classloading.ClassloaderExecutor.execute(ClassloaderExecutor.java:78)
at org.powermock.modules.junit4.rule.PowerMockStatement.evaluate(PowerMockRule.java:49)
at org.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:251)
at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:188)
at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:54)
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.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:152)
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 com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140)
And there is one trouble yet. Other tests with Robolectric and dagger2 dependencies are not working.
ProgressDownloadViewTest_AudioType:
@RunWith(RobolectricUnitTestRunner.class) public class ProgressDownloadViewTest_AudioType { Activity activity; @Mock FileDownloaderManager fileDownloaderManager; @Mock MediaManager mediaManager; @Before public void setup() { // Mockito MockitoAnnotations.initMocks(this); // Robolectic activity = Robolectric.setupActivity(Activity.class); } @Test public void setDownloadingState_emptyFileDownloaderI() { ProgressDownloadView progressDownloadView = new ProgressDownloadView(activity, ProgressDownloadView.Type.AUDIO); ... } }
Exception:
ClassCastException occurred while creating the mockito proxy : class to mock : 'com.tg.osip.tdclient.update_managers.FileDownloaderManager', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@403f0a22' created class : 'com.tg.osip.tdclient.update_managers.FileDownloaderManager$$EnhancerByMockitoWithCGLIB$$a751cd05', loaded by classloader : 'org.robolectric.internal.bytecode.InstrumentingClassLoader@403f0a22' proxy instance class : 'com.tg.osip.tdclient.update_managers.FileDownloaderManager$$EnhancerByMockitoWithCGLIB$$a751cd05', loaded by classloader : 'org.mockito.internal.creation.util.SearchingClassLoader@10bd9df0' instance creation by : ObjenesisInstantiator You might experience classloading issues, disabling the Objenesis cache *might* help (see MockitoConfiguration) at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:61) at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49) at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24) at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45) at com.tg.osip.ui.general.views.progress_download.ProgressDownloadViewTest_AudioType.setup(ProgressDownloadViewTest_AudioType.java:46) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 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.robolectric.RobolectricTestRunner$2.evaluate(RobolectricTestRunner.java:251) at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:188) at org.robolectric.RobolectricTestRunner.runChild(RobolectricTestRunner.java:54) 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.robolectric.RobolectricTestRunner$1.evaluate(RobolectricTestRunner.java:152) 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 com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:78) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:212) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:68) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:140) Caused by: java.lang.ClassCastException: Cannot cast com.tg.osip.tdclient.update_managers.FileDownloaderManager$$EnhancerByMockitoWithCGLIB$$a751cd05 to com.tg.osip.tdclient.update_managers.FileDownloaderManager at java.lang.Class.cast(Class.java:3369) at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:59) at org.powermock.api.mockito.repackaged.ClassImposterizer.imposterise(ClassImposterizer.java:49) at org.powermock.api.mockito.repackaged.CglibMockMaker.createMock(CglibMockMaker.java:24) at org.powermock.api.mockito.internal.mockmaker.PowerMockMaker.createMock(PowerMockMaker.java:45) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:33) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59) at org.mockito.Mockito.mock(Mockito.java:1284) at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:33) at org.mockito.internal.configuration.MockAnnotationProcessor.process(MockAnnotationProcessor.java:16) at org.mockito.internal.configuration.DefaultAnnotationEngine.createMockFor(DefaultAnnotationEngine.java:43) at org.mockito.internal.configuration.DefaultAnnotationEngine.process(DefaultAnnotationEngine.java:66) at org.mockito.internal.configuration.InjectingAnnotationEngine.processIndependentAnnotations(InjectingAnnotationEngine.java:71) at org.mockito.internal.configuration.InjectingAnnotationEngine.process(InjectingAnnotationEngine.java:55) at org.mockito.MockitoAnnotations.initMocks(MockitoAnnotations.java:108) ... 36 more
Update
Resolving in PowerMock + Robolectric + Dagger2. Part I
You need to change your program logic to allow for something like this:
Also
I'm not sure what you are referring to as
this
I cannot see where you are initialsing
FileDownloaderManager
in you classes, but it seems you are attempting to use the custom manager as the inbuilt android manager.I hope this helps to get you a little clearer.