Improve test samples to catch more errors. #204

Job	Run time
build-final-nqcc (ubuntu-22.04) / build	5m 55s
build-final-nqcc (macos-latest) / build	4m 33s
build-partial-nqcc (macos-latest) / build	6m 40s
build-partial-nqcc (ubuntu-22.04) / build	6m 5s
test (3.8, ubuntu-22.04)	3m 44s
test (3.8, ubuntu-24.04)	3m 42s
test (3.8, macos-latest)	29m 10s
test (3.12, ubuntu-22.04)	3m 31s
test (3.12, ubuntu-24.04)	3m 20s
test (3.12, macos-latest)	30m 36s
	1h 37m 16s

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