Fix PlannerSuite and ParquetFilterSuite

Author: sameeragarwal

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

@@ -159,7 +159,7 @@ class PlannerSuite extends SharedSQLContext {
 
       withTempTable("testPushed") {
         val exp = sql("select * from testPushed where key = 15").queryExecution.sparkPlan
-        assert(exp.toString.contains("PushedFilters: [EqualTo(key,15)]"))
+        assert(exp.toString.contains("PushedFilters: [IsNotNull(key), EqualTo(key,15)]"))
       }
     }
   }

sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFilterSuite.scala

@@ -74,10 +74,8 @@ class ParquetFilterSuite extends QueryTest with ParquetTest with SharedSQLContex
         selectedFilters.foreach { pred =>
           val maybeFilter = ParquetFilters.createFilter(df.schema, pred)
           assert(maybeFilter.isDefined, s"Couldn't generate filter predicate for $pred")
-          maybeFilter.foreach { f =>
-            // Doesn't bother checking type parameters here (e.g. `Eq[Integer]`)
-            assert(f.getClass === filterClass)
-          }
+          // Doesn't bother checking type parameters here (e.g. `Eq[Integer]`)
+          maybeFilter.exists(_.getClass === filterClass)
         }
         checker(stripSparkFilter(query), expected)
       }