Improve test coverage: CLI (#614) #1530

Job	Run time
dev and docs requirements check	1m 35s
docs	2m 11s
build (3.8, ubuntu-latest)	1m 3s
min-versions	1m 3s
build (3.8, windows-latest)	2m 51s
build (3.8, macos-latest)	1m 43s
pre-release	1m 26s
build (3.9, ubuntu-latest)	1m 8s
upstream	1m 40s
build (3.9, windows-latest)	2m 58s
build (3.9, macos-latest)	1m 40s
build (3.10, ubuntu-latest)	1m 6s
build (3.10, windows-latest)	3m 4s
build (3.10, macos-latest)	1m 36s
build (3.11, ubuntu-latest)	56s
build (3.11, windows-latest)	3m 7s
build (3.11, macos-latest)	1m 32s
	30m 39s

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