Tests

States' functions improvements #86

Job	Run time
Tests (1, macos-latest) / Tests	2m 3s
Tests (1, ubuntu-latest) / Tests	3m 0s
Tests (1, windows-latest) / Tests	5m 20s
Tests (lts, macos-latest) / Tests	1m 38s
Tests (lts, ubuntu-latest) / Tests	6m 20s
Tests (lts, windows-latest) / Tests	6m 9s
Tests (pre, macos-latest) / Tests	2m 7s
Tests (pre, ubuntu-latest) / Tests	3m 9s
Tests (pre, windows-latest) / Tests	5m 53s
	35m 39s

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