This code previously passed null or 'default' for every parameter.
Now it tries to mock non-final types, and recursively constructor final
types if possible, eventually giving up and passing null instead.
The previous null-passing behaviour led to a quite confusing failure in
`ForwardingPlayer.addListener` when writing 25c927e9f3 due to an NPE
when trying to compare parameter equality in `Mockito.verify` [1].
With this change, the failure is much clearer [2].
There's a relatively simple case this code still doesn't handle: A final
type like `PlaybackParameters` where the constructor parameters **have**
to be non-default primitives (greater than zero in that case).
-------
[1]
```
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:569)
at androidx.media3.test.utils.TestUtil.assertForwardingClassForwardsAllMethodsExcept(TestUtil.java:687)
at androidx.media3.common.ForwardingPlayerTest.forwardingPlayer_forwardsAllPlayerMethods(ForwardingPlayerTest.java:110)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:569)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:588)
at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$2(SandboxTestRunner.java:290)
at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:101)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.lang.NullPointerException: Cannot invoke "Object.hashCode()" because "this.listener" is null
at androidx.media3.common.ForwardingPlayer$ForwardingListener.hashCode(ForwardingPlayer.java:1140)
at java.base/java.lang.Object.toString(Object.java:256)
at java.base/java.lang.String.valueOf(String.java:4220)
at org.mockito.internal.verification.argumentmatching.ArgumentMatchingTool.toStringEquals(ArgumentMatchingTool.java:54)
at org.mockito.internal.verification.argumentmatching.ArgumentMatchingTool.getSuspiciouslyNotMatchingArgsIndexes(ArgumentMatchingTool.java:36)
at org.mockito.internal.verification.checkers.MissingInvocationChecker.checkMissingInvocation(MissingInvocationChecker.java:45)
at org.mockito.internal.verification.Times.verify(Times.java:37)
at org.mockito.internal.verification.MockAwareVerificationMode.verify(MockAwareVerificationMode.java:30)
at org.mockito.internal.handler.MockHandlerImpl.handle(MockHandlerImpl.java:75)
at org.mockito.internal.handler.NullResultGuardian.handle(NullResultGuardian.java:29)
at org.mockito.internal.handler.InvocationNotifierHandler.handle(InvocationNotifierHandler.java:34)
at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.doIntercept(MockMethodInterceptor.java:82)
at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor.doIntercept(MockMethodInterceptor.java:56)
at org.mockito.internal.creation.bytebuddy.MockMethodInterceptor$DispatcherDefaultingToRealMethod.interceptAbstract(MockMethodInterceptor.java:161)
at androidx.media3.common.Player$MockitoMock$1276619531.addListener(Unknown Source)
... 22 more
```
----
[2]
```
Argument(s) are different! Wanted:
player.addListener(
Mock for Listener, hashCode: 107929032
);
-> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Actual invocations have different arguments:
player.addListener(
androidx.media3.common.ForwardingPlayer$ForwardingListener@af47cec0
);
-> at androidx.media3.common.ForwardingPlayer.addListener(ForwardingPlayer.java:81)
```
PiperOrigin-RevId: 702378861
9828d104b5