Use robolectric/AndroidJUnit4 for integration test tests (#144348)
This allows relanding https://github.com/flutter/engine/pull/51056. The patch introduced a change where a static member is initialized from `View.generateViewId()` instead of conditionally using that API. Without an implementation for that in android.jar, the test will fail. The test in here currently is using a fake implementation that creates errors seen below. See https://logs.chromium.org/logs/flutter/buildbucket/cr-buildbucket/8754827734484522225/+/u/run_plugin_test/stdout#L46564_2 for failure. More detailed failure information is available locally in the `build` folder: ``` Mockito cannot mock this class: class io.flutter.embedding.android.FlutterActivity. If you're not sure why you're getting this error, please open an issue on GitHub. Java : 17 JVM vendor name : JetBrains s.r.o. JVM vendor version : 17.0.7+0-17.0.7b1000.6-10550314 JVM name : OpenJDK 64-Bit Server VM JVM version : 17.0.7+0-17.0.7b1000.6-10550314 JVM info : mixed mode OS name : Mac OS X OS version : 14.3.1 You are seeing this disclaimer because Mockito is configured to create inlined mocks. You can learn about inline mocks and their limitations under item #39 of the Mockito class javadoc. Underlying exception : org.mockito.exceptions.base.MockitoException: Cannot instrument class io.flutter.embedding.android.FlutterActivity because it or one of its supertypes could not be initialized at app//dev.flutter.plugins.integration_test.FlutterDeviceScreenshotTest.getFlutterView_returnsFlutterViewForFlutterActivity(FlutterDeviceScreenshotTest.java:32) at java.base@17.0.7/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.7/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at java.base@17.0.7/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base@17.0.7/java.lang.reflect.Method.invoke(Unknown Source) 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.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$3.evaluate(ParentRunner.java:306) at app//org.junit.runners.ParentRunner.run(ParentRunner.java:413) at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110) at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58) at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38) at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62) at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51) at java.base@17.0.7/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base@17.0.7/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at java.base@17.0.7/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.base@17.0.7/java.lang.reflect.Method.invoke(Unknown Source) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36) at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24) at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33) at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94) at jdk.proxy1/jdk.proxy1.$Proxy2.processTestClass(Unknown Source) at org.gradle.api.internal.tasks.testing.worker.TestWorker$2.run(TestWorker.java:176) at org.gradle.api.internal.tasks.testing.worker.TestWorker.executeAndMaintainThreadName(TestWorker.java:129) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:100) at org.gradle.api.internal.tasks.testing.worker.TestWorker.execute(TestWorker.java:60) at org.gradle.process.internal.worker.child.ActionExecutionWorker.execute(ActionExecutionWorker.java:56) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:133) at org.gradle.process.internal.worker.child.SystemApplicationClassLoaderWorker.call(SystemApplicationClassLoaderWorker.java:71) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.run(GradleWorkerMain.java:69) at app//worker.org.gradle.process.internal.worker.GradleWorkerMain.main(GradleWorkerMain.java:74) Caused by: org.mockito.exceptions.base.MockitoException: Cannot instrument class io.flutter.embedding.android.FlutterActivity because it or one of its supertypes could not be initialized at app//net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:168) at app//net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:399) at app//net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:190) at app//net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:410) ... 44 more Caused by: java.lang.RuntimeException: Method generateViewId in android.view.View not mocked. See http://g.co/androidstudio/not-mocked for details. at android.view.View.generateViewId(View.java) at io.flutter.embedding.android.FlutterActivity.<clinit>(FlutterActivity.java:218) at java.base/java.lang.Class.forName0(Native Method) at java.base/java.lang.Class.forName(Unknown Source) at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.assureInitialization(InlineBytecodeGenerator.java:236) at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.triggerRetransformation(InlineBytecodeGenerator.java:261) at org.mockito.internal.creation.bytebuddy.InlineBytecodeGenerator.mockClass(InlineBytecodeGenerator.java:218) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.lambda$mockClass$0(TypeCachingBytecodeGenerator.java:47) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:168) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:399) at net.bytebuddy.TypeCache.findOrInsert(TypeCache.java:190) at net.bytebuddy.TypeCache$WithInlineExpunction.findOrInsert(TypeCache.java:410) at org.mockito.internal.creation.bytebuddy.TypeCachingBytecodeGenerator.mockClass(TypeCachingBytecodeGenerator.java:40) at org.mockito.internal.creation.bytebuddy.InlineDelegateByteBuddyMockMaker.createMockType(InlineDelegateByteBuddyMockMaker.java:396) at org.mockito.internal.creation.bytebuddy.InlineDelegateByteBuddyMockMaker.doCreateMock(InlineDelegateByteBuddyMockMaker.java:355) at org.mockito.internal.creation.bytebuddy.InlineDelegateByteBuddyMockMaker.createMock(InlineDelegateByteBuddyMockMaker.java:334) at org.mockito.internal.creation.bytebuddy.InlineByteBuddyMockMaker.createMock(InlineByteBuddyMockMaker.java:56) at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:99) at org.mockito.internal.MockitoCore.mock(MockitoCore.java:88) at org.mockito.Mockito.mock(Mockito.java:2087) at org.mockito.Mockito.mock(Mockito.java:2002) ... 44 more ```
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