ANR when running tests on Android

[mfkl]

Hi!

Thank you for your work on NUnit.

I encounter an issue when running the tests with (I suspect)TerminateAfterExecution = true.
The tests run fine, breakpoints get hit. But once that's done, the UI freezes for a bit and then the app crashes.

using:
nunit.Options = new TestOptions { AutoRun = true, TerminateAfterExecution = true };

[mono] Unhandled Exception: [mono] System.ObjectDisposedException: Cannot access a disposed object. [mono] Object name: 'The ThreadLocal object has been disposed.'. [mono] at System.Threading.ThreadLocal1[T].GetValueSlow () [0x00014] in <08c2fe83337b4f23b8377cd91091fe75>:0

[mono] at System.Threading.ThreadLocal1[T].get_Value () [0x0003e] in <08c2fe83337b4f23b8377cd91091fe75>:0 `

[mono] at Java.Interop.JniEnvironment.get_CurrentInfo () [0x00000] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono] at Java.Interop.JniEnvironment.get_Runtime () [0x00000] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono] at Java.Interop.JniObjectReference.Dispose (Java.Interop.JniObjectReference& reference) [0x00026] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono] at Java.Interop.JniRuntime.Dispose (System.Boolean disposing) [0x00033] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono] at Java.Interop.JniRuntime.Finalize () [0x00000] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono-rt] [ERROR] FATAL UNHANDLED EXCEPTION: System.ObjectDisposedException: Cannot access a disposed object.

[mono-rt] Object name: 'The ThreadLocal object has been disposed.'. [mono-rt] at System.Threading.ThreadLocal1[T].GetValueSlow () [0x00014] in <08c2fe83337b4f23b8377cd91091fe75>:0

[mono-rt] at System.Threading.ThreadLocal1[T].get_Value () [0x0003e] in <08c2fe83337b4f23b8377cd91091fe75>:0

[mono-rt] at Java.Interop.JniEnvironment.get_CurrentInfo () [0x00000] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono-rt] at Java.Interop.JniEnvironment.get_Runtime () [0x00000] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono-rt] at Java.Interop.JniObjectReference.Dispose (Java.Interop.JniObjectReference& reference) [0x00026] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono-rt] at Java.Interop.JniRuntime.Dispose (System.Boolean disposing) [0x00033] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

[mono-rt] at Java.Interop.JniRuntime.Finalize () [0x00000] in <8f50e0a9c86d4dfb89aa44f9276b9b1c>:0

Setting AutoRun to false leads to the same problem after running the tests manually. However, if I start the app again after a crash without uninstalling it, I'll get different exceptions on various components (JNI, Forms). Not sure that's helpful or relevant to solve the 1st problem, posting the stacktrace anyway.

[mono] Unhandled Exception:
[mono] System.NullReferenceException: Object reference not set to an instance of an object.
[mono] at Java.Interop.JniEnvironmentInfo..ctor () [0x00018] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono] at Java.Interop.JniEnvironment+<>c.<.cctor>b__35_0 () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono] at System.Threading.ThreadLocal1[T].GetValueSlow () [0x00031] in <d18287e1d683419a8ec3216fd78947b9>:0 [mono] at System.Threading.ThreadLocal1[T].get_Value () [0x0003e] in :0
[mono] at Java.Interop.JniEnvironment.get_CurrentInfo () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono] at Java.Interop.JniEnvironment.get_Runtime () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono] at Java.Interop.JniObjectReference.Dispose (Java.Interop.JniObjectReference& reference) [0x00026] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono] at Java.Interop.JniRuntime.Dispose (System.Boolean disposing) [0x00033] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono] at Java.Interop.JniRuntime.Finalize () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] [ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object.
[mono-rt] at Java.Interop.JniEnvironmentInfo..ctor () [0x00018] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] at Java.Interop.JniEnvironment+<>c.<.cctor>b__35_0 () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] at System.Threading.ThreadLocal1[T].GetValueSlow () [0x00031] in <d18287e1d683419a8ec3216fd78947b9>:0 [mono-rt] at System.Threading.ThreadLocal1[T].get_Value () [0x0003e] in :0
[mono-rt] at Java.Interop.JniEnvironment.get_CurrentInfo () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] at Java.Interop.JniEnvironment.get_Runtime () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] at Java.Interop.JniObjectReference.Dispose (Java.Interop.JniObjectReference& reference) [0x00026] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] at Java.Interop.JniRuntime.Dispose (System.Boolean disposing) [0x00033] in <5716a943049b49ca928a3a1c8d2386f4>:0
[mono-rt] at Java.Interop.JniRuntime.Finalize () [0x00000] in <5716a943049b49ca928a3a1c8d2386f4>:0

Config:

• NUnit 3.6.1
• nunit.xamarin 3.6.1
• PCLStorage 1.0.2
• Xamarin.Forms 2.3.3.193
• Tested on both sim and device

Hope this helps. Let me know if you need more info.

[rprouse]

Thanks for the detailed report. We will look into it when we get a chance.