Tests

Merge pull request #1112 from SciML/dw/totallength #203

Job	Run time
Tests (1, Downstream) / Tests - Downstream	21m 47s
Tests (1, Core) / Tests - Core	5m 47s
Tests (1, Downstream2) / Tests - Downstream2	20m 29s
Tests (lts, Core) / Tests - Core	3m 37s
Tests (lts, Downstream) / Tests - Downstream	12m 43s
Tests (lts, Downstream2) / Tests - Downstream2	14m 11s
Tests (pre, Core) / Tests - Core	5m 54s
Tests (pre, Downstream) / Tests - Downstream	20m 54s
Tests (pre, Downstream2) / Tests - Downstream2	21m 21s
	2h 6m 43s

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