[TEST] Load test table based on case sensitivity

sql/hive/src/main/scala/org/apache/spark/sql/hive/test/TestHive.scala

@@ -18,7 +18,7 @@
 package org.apache.spark.sql.hive.test
 
 import java.io.File
-import java.util.{Set => JavaSet}
+import java.util.{Locale, Set => JavaSet}
 
 import scala.collection.JavaConverters._
 import scala.collection.mutable
@@ -449,6 +449,8 @@ private[hive] class TestHiveSparkSession(
 
   private val loadedTables = new collection.mutable.HashSet[String]
 
+  def getLoadedTables: collection.mutable.HashSet[String] = loadedTables
+
   def loadTestTable(name: String) {
     if (!(loadedTables contains name)) {
       // Marks the table as loaded first to prevent infinite mutually recursive table loading.
@@ -553,7 +555,10 @@ private[hive] class TestHiveQueryExecution(
     val referencedTables =
       describedTables ++
         logical.collect { case UnresolvedRelation(tableIdent, _) => tableIdent.table }
-    val referencedTestTables = referencedTables.filter(sparkSession.testTables.contains)
+    val formattedRefTables = referencedTables.map { t =>
+      if (sparkSession.sessionState.conf.caseSensitiveAnalysis) t else t.toLowerCase(Locale.ROOT)
+    }
+    val referencedTestTables = formattedRefTables.filter(sparkSession.testTables.contains)
     logDebug(s"Query references test tables: ${referencedTestTables.mkString(", ")}")
     referencedTestTables.foreach(sparkSession.loadTestTable)
     // Proceed with analysis.

sql/hive/src/test/scala/org/apache/spark/sql/hive/TestHiveSuite.scala

@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.hive
+
+import org.apache.spark.sql.AnalysisException
+import org.apache.spark.sql.hive.test.{TestHiveSingleton, TestHiveSparkSession}
+import org.apache.spark.sql.internal.SQLConf
+import org.apache.spark.sql.test.SQLTestUtils
+
+
+class TestHiveSuite extends TestHiveSingleton with SQLTestUtils {
+  test("load test table based on case sensitivity") {
+
+    withSQLConf(SQLConf.CASE_SENSITIVE.key -> "false") {
+      sql("SELECT * FROM SRC").queryExecution.analyzed
+      assert(spark.asInstanceOf[TestHiveSparkSession].getLoadedTables.contains("src"))
+    }
+    spark.asInstanceOf[TestHiveSparkSession].reset()
+
+    withSQLConf(SQLConf.CASE_SENSITIVE.key -> "true") {
+      val err = intercept[AnalysisException] {
+        sql("SELECT * FROM SRC").queryExecution.analyzed
+      }
+      assert(err.message.contains("Table or view not found"))
+    }
+    spark.asInstanceOf[TestHiveSparkSession].reset()
+  }
+}