Unit test #681

Job	Run time
test (1.0, ubuntu-latest, x64)	4m 22s
test (1.0, windows-latest, x64)	5m 51s
test (1.0, macOS-latest, x64)	6m 46s
test (1.6, ubuntu-latest, x64)	3m 50s
test (1.6, windows-latest, x64)	9m 45s
test (1.6, macOS-latest, x64)	4m 22s
test (1, ubuntu-latest, x64)	3m 38s
test (1, windows-latest, x64)	4m 43s
test (1, macOS-latest, x64)	4m 26s
test (nightly, ubuntu-latest, x64)	5m 4s
test (nightly, windows-latest, x64)	6m 3s
test (nightly, macOS-latest, x64)	6m 46s
test (ubuntu-latest, 1, x86)	4m 34s
	1h 10m 10s

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