Minor: Add additional coalesce tests #10334
Merged
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Which issue does this PR close?
Part of #10261
Rationale for this change
@jayzhan211 's great PR here #10268 added new tests and potentially changed behavior of
coalesce
with respect to dictionaries, revealing a test gapWhat changes are included in this PR?
Port the great tests that @jayzhan211 made in #10268. Merging these before #10268 will both increase test coverage, decrease the size of the diff in #10268 and make it easier to understand what behavior has changed.
Are these changes tested?
All tests
Are there any user-facing changes?
No