Github user petermaxlee commented on a diff in the pull request:
https://github.com/apache/spark/pull/14472#discussion_r73281256
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestSuite.scala ---
@@ -0,0 +1,186 @@
+/*
+ * 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
+
+import java.io.File
+import java.util.{Locale, TimeZone}
+
+import org.apache.spark.sql.catalyst.rules.RuleExecutor
+import org.apache.spark.sql.catalyst.util.{fileToString, stringToFile}
+import org.apache.spark.sql.test.SharedSQLContext
+
+/**
+ * End-to-end test cases for SQL queries.
+ *
+ * Each case is loaded from a file in
"spark/sql/core/src/test/resources/sql-tests/inputs".
+ * Each case has a golden result file in
"spark/sql/core/src/test/resources/sql-tests/results".
+ *
+ * To re-generate golden files, run:
+ * {{{
+ * SPARK_GENERATE_GOLDEN_FILES=1 build/sbt "sql/test-only
*SQLQueryTestSuite"
+ * }}}
+ *
+ * The format for input files is simple:
+ * 1. A list of SQL queries separated by semicolon.
+ * 2. Lines starting with -- are treated as comments and ignored.
+ *
+ * For example:
+ * {{{
+ * -- this is a comment
+ * select 1 + 2;
+ * select current_date;
+ * }}}
+ *
+ * Result files are encoded as XMLs.
+ */
+class SQLQueryTestSuite extends QueryTest with SharedSQLContext {
+
+ private val regenerateGoldenFiles: Boolean =
System.getenv("SPARK_GENERATE_GOLDEN_FILES") == "1"
--- End diff --
Why putting the two into separate programs? This approach seems easy enough
and was the one suggested by @rxin in LogicalPlanToSQLSuite.
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