test for retrieving exit code

[kkourt]

Add a test to check that tetragon returns the exit code of the process correctly. (see: #630)

[zhy76]

I'm interested in this, but I'm new here, could you give me more suggestion?

[kkourt]

Programs have an exit code that indicate whether there is an error or not. In a shell such as bash, the error code is accessible via the $? environment variable.

E.g.,

$ bash -c 'exit 42'
$ echo $?
42

The purpose here is to write a test that executes such a program and checks that the status value in Tetragon exit event (see: https://github.com/cilium/tetragon/tree/main/api/v1#tetragon-ProcessExit) is the actual exit value.

Some example tests can be found in: https://github.com/cilium/tetragon/blob/main/pkg/sensors/exec/exit_test.go

[zhy76]

Programs have an exit code that indicate whether there is an error or not. In a shell such as bash, the error code is accessible via the $? environment variable.

E.g.,

$ bash -c 'exit 42'
$ echo $?
42

The purpose here is to write a test that executes such a program and checks that the status value in Tetragon exit event (see: https://github.com/cilium/tetragon/tree/main/api/v1#tetragon-ProcessExit) is the actual exit value.

Some example tests can be found in: https://github.com/cilium/tetragon/blob/main/pkg/sensors/exec/exit_test.go

Thanks for your advice, I will try to solve this.