Tests

chore: prefer ArrayPartitionStyle to preserve nesting structure #220

Job	Run time
Tests (pre, Core) / Tests - Core	3m 49s
Tests (pre, Downstream) / Tests - Downstream	14m 2s
Tests (1, Core) / Tests - Core	3m 7s
Tests (1, Downstream) / Tests - Downstream	5m 18s
Tests (lts, Core) / Tests - Core	2m 23s
Tests (lts, Downstream) / Tests - Downstream	3m 30s
	32m 9s

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