tests

tests #502

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	20s
Tests (8.1, ubuntu-latest, prefer-stable)	18s
Tests (8.1, macos-latest, prefer-lowest)	1m 15s
Tests (8.1, macos-latest, prefer-stable)	1m 18s
Tests (8.1, windows-latest, prefer-lowest)	37s
Tests (8.1, windows-latest, prefer-stable)	38s
Tests (8.2, ubuntu-latest, prefer-lowest)	22s
Tests (8.2, ubuntu-latest, prefer-stable)	21s
Tests (8.2, macos-latest, prefer-lowest)	1m 46s
Tests (8.2, macos-latest, prefer-stable)	1m 20s
Tests (8.2, windows-latest, prefer-lowest)	36s
Tests (8.2, windows-latest, prefer-stable)	39s
Tests (8.3, ubuntu-latest, prefer-lowest)	22s
Tests (8.3, ubuntu-latest, prefer-stable)	20s
Tests (8.3, macos-latest, prefer-lowest)	1m 14s
Tests (8.3, macos-latest, prefer-stable)	1m 16s
Tests (8.3, windows-latest, prefer-lowest)	45s
Tests (8.3, windows-latest, prefer-stable)	46s
	14m 13s

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