[SPARK] Add common sql test utility methods to DeltaSQLTestUtils
#4131
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Which Delta project/connector is this regarding?
Description
Adding the most commonly used methods in testing; such as getting the delta log, snapshot, protocol, stats, columns etc in
DeltaSQLTestUtils
so that we don't have to keep reimplementing them over and over again and just use this trait instead.How was this patch tested?
No testing required.
Does this PR introduce any user-facing changes?
No.