Move test to PlannerSuite.

Author: JoshRosen

sql/core/src/test/scala/org/apache/spark/sql/execution/ExchangeSuite.scala

@@ -30,14 +30,4 @@ class ExchangeSuite extends SparkPlanTest {
       input.map(Row.fromTuple)
     )
   }
-
-  test("EnsureRequirements shouldn't add exchange to SMJ inputs if both are SinglePartition") {
-    val df = (1 to 10).map(Tuple1.apply).toDF("a").repartition(1)
-    val keys = Seq(df.col("a").expr)
-    val smj = SortMergeJoin(keys, keys, df.queryExecution.sparkPlan, df.queryExecution.sparkPlan)
-    val afterEnsureRequirements = EnsureRequirements(df.sqlContext).apply(smj)
-    if (afterEnsureRequirements.collect { case Exchange(_, _) => true }.nonEmpty) {
-      fail(s"No Exchanges should have been added:\n$afterEnsureRequirements")
-    }
-  }
 }

sql/core/src/test/scala/org/apache/spark/sql/execution/PlannerSuite.scala

@@ -21,7 +21,7 @@ import org.apache.spark.SparkFunSuite
 import org.apache.spark.sql.TestData._
 import org.apache.spark.sql.catalyst.plans._
 import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
-import org.apache.spark.sql.execution.joins.{BroadcastHashJoin, ShuffledHashJoin}
+import org.apache.spark.sql.execution.joins.{BroadcastHashJoin, ShuffledHashJoin, SortMergeJoin}
 import org.apache.spark.sql.functions._
 import org.apache.spark.sql.test.{SQLTestUtils, TestSQLContext}
 import org.apache.spark.sql.test.TestSQLContext._
@@ -202,4 +202,14 @@ class PlannerSuite extends SparkFunSuite with SQLTestUtils {
       }
     }
   }
+
+  test("EnsureRequirements shouldn't add exchange to SMJ inputs if both are SinglePartition") {
+    val df = (1 to 10).map(Tuple1.apply).toDF("a").repartition(1)
+    val keys = Seq(df.col("a").expr)
+    val smj = SortMergeJoin(keys, keys, df.queryExecution.sparkPlan, df.queryExecution.sparkPlan)
+    val afterEnsureRequirements = EnsureRequirements(df.sqlContext).apply(smj)
+    if (afterEnsureRequirements.collect { case Exchange(_, _) => true }.nonEmpty) {
+      fail(s"No Exchanges should have been added:\n$afterEnsureRequirements")
+    }
+  }
 }