NightOwl888 commented on issue #768:
URL: https://github.com/apache/lucenenet/issues/768#issuecomment-1355228404
Hi @Jeevananthan-23. Thanks for volunteering.
I don't believe that .NET has a built-in "crash" function that can be
executed from the outside of a process like Java does, so we will need to
change the approach. My thought is to do something along the lines of:
1. Have the test generate the C# code to create a basic console app that
runs 2 threads.
a. Thread 1 will execute the code in the
`TestNRTThreads.TestNRTThreads_Mem()` method up to 10 times. This test should
be modified to check for the directory to create the index in from an
environment variable, and if the environment variable isn't passed to proceed
with a random index directory as it currently does.
b. Thread 2 will sleep for a random number of milliseconds (between 3000
and 4000) and then throw an uncaught exception. This will crash the application
on .NET Core. Inherit`ThreadJob` to make the thread, similar to how they are
done in Java. `ThreadJob` automatically re-throws the exception when you call
`Join`, which if we leave uncaught will also crash on .NET Framework.
2. The test would use `System.Diagnostics.Process` to call `dotnet run` to
compile and run the console app. It should attach an in-memory listener to
STDERR so it can confirm that an error occurred.
3. The test should create a random temp directory name and pass the name to
the console app using the `EnvironmentVariables `property of
`System.Diagnostics.Process.StartInfo`.
4. The test will wait for the process to exit before proceeding.
5. Once it has exited, the test should check to ensure the output of STDERR
has a length greater than 0.
6. Next, proceed with the original `checkIndexes(tempDir)` test with the
directory that was created in step 3.
Of course, if during your research you think you have found another approach
that works, you can modify it accordingly. But please use the original
`TestNRTThreads.TestNRTThreads_Mem()` and `checkIndexes(tempDir)` to generate
the index and check to see that it is not corrupted.
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