fix test failed

Author: windpiger

sql/core/src/test/scala/org/apache/spark/sql/sources/ResolvedDataSourceSuite.scala

@@ -21,11 +21,12 @@ import org.apache.spark.SparkFunSuite
 import org.apache.spark.sql.AnalysisException
 import org.apache.spark.sql.catalyst.util.DateTimeUtils
 import org.apache.spark.sql.execution.datasources.DataSource
+import org.apache.spark.sql.test.SharedSQLContext
 
-class ResolvedDataSourceSuite extends SparkFunSuite {
+class ResolvedDataSourceSuite extends SparkFunSuite with SharedSQLContext {
   private def getProvidingClass(name: String): Class[_] =
     DataSource(
-      sparkSession = null,
+      sparkSession = spark,
       className = name,
       options = Map("timeZone" -> DateTimeUtils.defaultTimeZone().getID)).providingClass