Github user c-horn commented on a diff in the pull request: https://github.com/apache/spark/pull/21752#discussion_r202445344 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/DataFrameAggregateSuite.scala --- @@ -717,4 +717,9 @@ class DataFrameAggregateSuite extends QueryTest with SharedSQLContext { Row(1, 2, 1) :: Row(2, 2, 2) :: Row(3, 2, 3) :: Nil) } + test("SPARK-24788: RelationalGroupedDataset.toString " + + "with unresolved grouping expressions should not throw an exception") { + noException should be thrownBy testData.groupBy('key).toString --- End diff -- The assertion is a negative statement about the raising of exceptions; I do not wish to enforce a particular `toString` format for this type going forward. Is there a specific guideline for test code format and tooling? The Matchers `noException` word is the only way I know of to test for exceptions in scalatest. I will try to find a more concise way of expressing the test, or maybe it can simply be left as `testData.groupBy('key).toString` with a comment indicating that it should not throw errors.
--- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org