[SPARK-27931][SQL] add a negative test case for "o"

younggyu chun · younggyu chun · commit 2ea551c72839 · 2019-08-29T22:17:08.000-04:00
diff --git a/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala b/sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
@@ -846,6 +846,7 @@ class CastSuite extends SparkFunSuite with ExpressionEvalHelper {
     checkCast("off", false)
     checkCast("of", false)
 
+    checkEvaluation(cast("o", BooleanType), null)
     checkEvaluation(cast("abc", BooleanType), null)
     checkEvaluation(cast("", BooleanType), null)
   }

Original file line number	Diff line number	Diff line change
`@@ -846,6 +846,7 @@ class CastSuite extends SparkFunSuite with ExpressionEvalHelper {`
`846`	`846`	`checkCast("off", false)`
`847`	`847`	`checkCast("of", false)`
`848`	`848`
	`849`	`+ checkEvaluation(cast("o", BooleanType), null)`
`849`	`850`	`checkEvaluation(cast("abc", BooleanType), null)`
`850`	`851`	`checkEvaluation(cast("", BooleanType), null)`
`851`	`852`	`}`