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Test function consistency by comparing Calcite's vs raw ResultSet
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core/src/test/java/org/apache/calcite/test/DBFunctionConsistencyTest.java
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| /* | ||
| * 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. | ||
| */ | ||
|
|
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| package org.apache.calcite.test; | ||
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| import org.junit.jupiter.api.AfterAll; | ||
| import org.junit.jupiter.api.Assertions; | ||
| import org.junit.jupiter.api.BeforeAll; | ||
| import org.junit.jupiter.params.ParameterizedTest; | ||
| import org.junit.jupiter.params.provider.CsvSource; | ||
| import org.testcontainers.containers.GenericContainer; | ||
| import org.testcontainers.containers.JdbcDatabaseContainer; | ||
| import org.testcontainers.containers.MySQLContainer; | ||
| import org.testcontainers.containers.OracleContainer; | ||
| import org.testcontainers.containers.PostgreSQLContainer; | ||
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|
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| import java.sql.Connection; | ||
| import java.sql.DriverManager; | ||
| import java.sql.PreparedStatement; | ||
| import java.sql.ResultSet; | ||
| import java.sql.SQLException; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| public class DBFunctionConsistencyTest { | ||
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| private enum Type { | ||
| ORACLE { | ||
| @Override String query(final String sqlFunction) { | ||
| return "SELECT " + sqlFunction + " FROM DUAL"; | ||
| } | ||
| }, POSTGRES_9_6, POSTGRES_12_2, MYSQL; | ||
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| String query(String sqlFunction) { | ||
| return "SELECT " + sqlFunction; | ||
| } | ||
| } | ||
|
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| private final static Map<Type, JdbcDatabaseContainer<?>> DBS = initContainers(); | ||
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| private static Map<Type, JdbcDatabaseContainer<?>> initContainers() { | ||
| Map<Type, JdbcDatabaseContainer<?>> dbs = new HashMap<>(); | ||
| dbs.put(Type.POSTGRES_9_6, new PostgreSQLContainer<>("postgres:9.6")); | ||
| dbs.put(Type.POSTGRES_12_2, new PostgreSQLContainer<>("postgres:12.2")); | ||
| dbs.put(Type.MYSQL, new MySQLContainer<>()); | ||
| dbs.put(Type.ORACLE, new OracleContainer( | ||
| "gvenzl/oracle-xe:21-slim-faststart")); | ||
| return dbs; | ||
| } | ||
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| @BeforeAll | ||
| static void setup() throws SQLException { | ||
| DBS.values().forEach(GenericContainer::start); | ||
| } | ||
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| @AfterAll | ||
| static void teardown() { | ||
| DBS.values().forEach(GenericContainer::stop); | ||
| } | ||
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| @ParameterizedTest | ||
| @CsvSource({ | ||
| "SQRT(4),ORACLE", | ||
| "SQRT(4),POSTGRES_9_6", | ||
| "SQRT(4),POSTGRES_12_2", | ||
| "SQRT(4),MYSQL", | ||
| "SQRT(-1),ORACLE", | ||
| "SQRT(-1),POSTGRES_9_6", | ||
| "SQRT(-1),POSTGRES_12_2", | ||
| "SQRT(-1),MYSQL" | ||
| }) | ||
| void testFunction(String function, String db) { | ||
| String calciteResult = execute(Type.valueOf(db), true, function); | ||
| String rawResult = execute(Type.valueOf(db), false, function); | ||
| Assertions.assertEquals(rawResult, calciteResult); | ||
| } | ||
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| String execute(Type dbType, boolean useCalcite, String exp) { | ||
| JdbcDatabaseContainer<?> db = DBS.get(dbType); | ||
| final String url; | ||
| final String query; | ||
| if (useCalcite) { | ||
| url = String.format( | ||
| "jdbc:calcite:schemaType=JDBC; schema.jdbcUser=%s; schema.jdbcPassword=%s; schema" | ||
| + ".jdbcUrl=%s", db.getUsername(), db.getPassword(), db.getJdbcUrl()); | ||
| query = "SELECT " + exp; | ||
| } else { | ||
| url = db.getJdbcUrl(); | ||
| query = dbType.query(exp); | ||
| } | ||
| try (Connection c = DriverManager.getConnection(url, db.getUsername(), db.getPassword())) { | ||
| try (PreparedStatement stmt = c.prepareStatement(query)) { | ||
| try (ResultSet rs = stmt.executeQuery()) { | ||
| if (rs.next()) { | ||
| return rs.getString(1); | ||
| } else { | ||
| return ""; | ||
| } | ||
| } | ||
| } | ||
| } catch (Exception e) { | ||
| return e.getMessage(); | ||
| } | ||
| } | ||
| } |
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