https://github.com/flutter/engine/pull/51229 blocked [the roll](https://github.com/flutter/flutter/pull/146522) and had to be reverted, which is a shame, but on the bright side it made it possible to point the framework at my removal pr, at the point of its merging the first time
This fixes all errors that are fixable in the framework that would have blocked the roll. There are some that aren't fixable here (they need to be fixed in the engine)*, so I'll fix those in the engine but unfortunately I can't pick up another version here to re-test until I try to roll again ð¢
*This category is: uses of plugins that in turn have a `registerWith`, that references the v1 embedding. The plan to fix these cases is to leave the interface that that method relies on around for now. See https://github.com/flutter/packages/pull/6494#issuecomment-2046010323 for details
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
```
Fixes https://github.com/flutter/flutter/issues/89683.
The changes to `getFlutterView` in `FlutterDeviceScreenshot` are the fix that was required, everything else was done to get tests running (such as re-generating some lockfiles and modifying the android manifest).
The code was all currently not unit tested, and there were no other easy examples to base these java unit tests off in flutter/flutter, so let me know if this approach to testing is wrong.
