Add exit code tests #416

Job	Run time
test (ubuntu-latest, 26.3, false)	47s
test (ubuntu-latest, 27.2, false)	38s
test (ubuntu-latest, 28.2, false)	38s
test (ubuntu-latest, 29.4, false)	50s
test (macos-latest, 28.2, false)	1m 17s
test (macos-latest, 29.4, false)	1m 44s
test (windows-latest, 26.3, false)	2m 29s
test (windows-latest, 27.2, false)	1m 55s
test (windows-latest, 28.2, false)	2m 20s
test (windows-latest, 29.4, false)	1m 34s
test (ubuntu-latest, snapshot, true)	36s
test (macos-latest, snapshot, true)	1m 11s
test (windows-latest, snapshot, true)	2m 13s
	18m 12s

Provide feedback