tests

tests #405

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	26s
Tests (8.1, ubuntu-latest, prefer-stable)	28s
Tests (8.1, macos-latest, prefer-lowest)	1m 16s
Tests (8.1, macos-latest, prefer-stable)	1m 21s
Tests (8.1, windows-latest, prefer-lowest)	42s
Tests (8.1, windows-latest, prefer-stable)	36s
Tests (8.2, ubuntu-latest, prefer-lowest)	13s
Tests (8.2, ubuntu-latest, prefer-stable)	21s
Tests (8.2, macos-latest, prefer-lowest)	1m 15s
Tests (8.2, macos-latest, prefer-stable)	1m 38s
Tests (8.2, windows-latest, prefer-lowest)	38s
Tests (8.2, windows-latest, prefer-stable)	39s
Tests (8.3, ubuntu-latest, prefer-lowest)	14s
Tests (8.3, ubuntu-latest, prefer-stable)	22s
Tests (8.3, macos-latest, prefer-lowest)	1m 14s
Tests (8.3, macos-latest, prefer-stable)	1m 15s
Tests (8.3, windows-latest, prefer-lowest)	37s
Tests (8.3, windows-latest, prefer-stable)	37s
	13m 52s

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