Github user maropu commented on the issue: https://github.com/apache/spark/pull/22755 It looks good to improve the test coverage. But, it seems to be hard to wrap all the test case with `withSQLConf`. So, how about adding a helper function for turning off/on codegen (`WHOLESTAGE_CODEGEN_ENABLED` and `CODEGEN_FACTORY_MODE`) like `testBothCodegenAndInterpreted`? @cloud-fan @gatorsmile https://github.com/apache/spark/blob/584e767d372d41071c3436f9ad4bf77a820f12b4/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/UnsafeRowConverterSuite.scala#L38
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