tests

tests #524

Job	Run time
Tests (8.1, ubuntu-latest, prefer-lowest)	17s
Tests (8.1, ubuntu-latest, prefer-stable)	22s
Tests (8.1, macos-latest, prefer-lowest)	1m 14s
Tests (8.1, macos-latest, prefer-stable)	1m 26s
Tests (8.1, windows-latest, prefer-lowest)	40s
Tests (8.1, windows-latest, prefer-stable)	40s
Tests (8.2, ubuntu-latest, prefer-lowest)	21s
Tests (8.2, ubuntu-latest, prefer-stable)	27s
Tests (8.2, macos-latest, prefer-lowest)	1m 23s
Tests (8.2, macos-latest, prefer-stable)	1m 17s
Tests (8.2, windows-latest, prefer-lowest)	51s
Tests (8.2, windows-latest, prefer-stable)	39s
Tests (8.3, ubuntu-latest, prefer-lowest)	37s
Tests (8.3, ubuntu-latest, prefer-stable)	23s
Tests (8.3, macos-latest, prefer-lowest)	1m 11s
Tests (8.3, macos-latest, prefer-stable)	1m 31s
Tests (8.3, windows-latest, prefer-lowest)	39s
Tests (8.3, windows-latest, prefer-stable)	44s
	14m 42s

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