Fix some warnings from unit tests (#2929) #2440

Job	Run time
Unit tests (3.8, windows-latest)	8m 57s
Execution tests (3.8, windows-latest)	4m 12s
Unit tests (3.8, ubuntu-22.04)	5m 3s
Execution tests (3.8, ubuntu-22.04)	2m 12s
Unit tests (3.9, windows-latest)	9m 0s
Execution tests (3.9, windows-latest)	5m 26s
Unit tests (3.9, ubuntu-22.04)	5m 5s
Execution tests (3.9, ubuntu-22.04)	2m 21s
Unit tests (3.10, windows-latest)	8m 54s
Execution tests (3.10, windows-latest)	5m 40s
Unit tests (3.10, ubuntu-22.04)	5m 8s
Execution tests (3.10, ubuntu-22.04)	2m 19s
Unit tests (3.11, windows-latest)	8m 48s
Execution tests (3.11, windows-latest)	6m 6s
Unit tests (3.11, ubuntu-22.04)	5m 7s
Execution tests (3.11, ubuntu-22.04)	2m 8s
Unit tests (3.12, windows-latest)	10m 3s
Execution tests (3.12, windows-latest)	5m 49s
Unit tests (3.12, ubuntu-22.04)	6m 23s
Execution tests (3.12, ubuntu-22.04)	2m 25s
	1h 51m 6s

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