Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/19363#discussion_r144501966
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/QueryTest.scala ---
@@ -46,6 +36,20 @@ abstract class QueryTest extends PlanTest {
Locale.setDefault(Locale.US)
/**
+ * Makes sure the answer matches the expected result
+ */
+ def checkString(expected: String, actual: String): Unit = {
+ if (expected != actual) {
+ fail(
+ "KeyValueGroupedDataset.toString() gives wrong result:\n\n" +
sideBySide(
--- End diff --
You didn't only use this against `KeyValueGroupedDataset`.
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