misc(test/utils): Expose assertEqualResults for comparing two multisets. (facebookincubator#15109)

Summary:
Pull Request resolved: facebookincubator#15109

Expand header to include existing method that's used internally that I'd like to use from DPP.

Reviewed By: xiaoxmeng, marxhxxx

Differential Revision: D83879150

fbshipit-source-id: a707912168ee2a11d038042febb061287f9d1d51

Author: Max Hoffman

velox/exec/tests/utils/QueryAssertions.h

@@ -312,6 +312,13 @@ bool assertEqualResults(
     const core::PlanNodePtr& plan1,
     const core::PlanNodePtr& plan2);
 
+bool assertEqualResults(
+    const MaterializedRowMultiset& expectedRows,
+    const TypePtr& expectedType,
+    const MaterializedRowMultiset& actualRows,
+    const TypePtr& actualType,
+    const std::string& message);
+
 /// Ensure both datasets have the same type and number of rows.
 void assertEqualTypeAndNumRows(
     const TypePtr& expectedType,