Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/14472#discussion_r73280720 --- 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" + + private val inputFilePath = "src/test/resources/sql-tests/inputs/" + private val goldenFilePath = "src/test/resources/sql-tests/results/" + + /** List of test cases to ignore, in lower cases. */ + private val blackList = Set( + "blacklist.sql" // Do NOT remove this one. It is here to test the blacklist functionality. + ) + + // Create all the test cases. + listTestCases().foreach(createScalaTestCase) + + /** A test case. */ + private case class TestCase(name: String, inputFile: String, resultFile: String) + + /** A single SQL query's output. */ + private case class QueryOutput(sql: String, schema: String, output: String) { + def toXML: String = { --- End diff -- is it a convention to use XML as golden file? It's really hard to read...
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