+
−/*
+
− * SPDX-License-Identifier: MPL-2.0
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− *
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− * This Source Code Form is subject to the terms of the Mozilla Public
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− * License, v. 2.0.  If a copy of the MPL was not distributed with this
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− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
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− * Copyright 2024, 2025 MonetDB Foundation;
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− * Copyright August 2008 - 2023 MonetDB B.V.;
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− * Copyright 1997 - July 2008 CWI.
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− */
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−
+
−import java.sql.Connection;
+
−import java.sql.DriverManager;
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−import java.sql.ResultSet;
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−import java.sql.SQLException;
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−import java.sql.Statement;
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−import java.util.Properties;
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−import java.util.SimpleTimeZone;
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−import java.util.TimeZone;
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−
+
−public final class ConnectionTests {
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−
+
−	private final String url;
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−	private final Properties connProps;
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−	private final TimeZone timeZone;
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−
+
−	public ConnectionTests(String url, Properties props, TimeZone timeZone) {
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−		this.url = url;
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−		Properties myProps = null;
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−		if (props != null) {
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−			myProps = new Properties();
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−			myProps.putAll(props);
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−		}
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−		this.connProps = myProps;
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−		this.timeZone = timeZone;
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−	}
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−
+
−	public ConnectionTests(String url) {
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−		this(url, null, null);
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−	}
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−
+
−	public ConnectionTests withSuffix(String suffix) {
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−		String newUrl = url;
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−
+
−		if (newUrl.contains("?")) {
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−			newUrl += "&";
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−		} else {
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−			newUrl += "?";
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−		}
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−		newUrl += suffix;
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−
+
−		return new ConnectionTests(newUrl, this.connProps, this.timeZone);
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−	}
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−
+
−	public ConnectionTests withProp(String key, String value) {
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−		ConnectionTests sub = new ConnectionTests(this.url, new Properties(), this.timeZone);
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−		if (this.connProps != null)
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−			sub.connProps.putAll(this.connProps);
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−		sub.connProps.setProperty(key, value);
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−		return sub;
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−	}
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−
+
−	public ConnectionTests withTimeZone(int offsetMinutes) {
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−		TimeZone tz = new SimpleTimeZone(offsetMinutes * 60 * 1000, "Custom" + offsetMinutes);
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−		return new ConnectionTests(this.url, this.connProps, tz);
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−	}
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−
+
−	public static void main(String[] args) throws SQLException, Failure {
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−		String url = args[0];
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−		runTests(url);
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−	}
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−
+
−	public static void runTests(String url) throws SQLException, Failure {
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−		ConnectionTests tester = new ConnectionTests(url);
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−
+
−		tester.checkAutoCommit(true);
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−		tester.withSuffix("autocommit=true").checkAutoCommit(true);
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−		tester.withSuffix("autocommit=false").checkAutoCommit(false);
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−		tester.withProp("autocommit", "true").checkAutoCommit(true);
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−		tester.withProp("autocommit", "false").checkAutoCommit(false);
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−
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−		tester.testTimeZone();
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−
+
−		tester.cleanup();
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−	}
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−
+
−	Connection connect() throws SQLException {
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−		TimeZone restore = null;
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−		try {
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−			if (this.timeZone != null) {
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−				restore = TimeZone.getDefault();
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−				TimeZone.setDefault(this.timeZone);
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−			}
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−			if (connProps != null) {
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−				return DriverManager.getConnection(url, connProps);
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−			} else {
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−				return DriverManager.getConnection(url);
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−			}
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−		} finally {
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−			if (restore != null) {
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−				TimeZone.setDefault(restore);
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−			}
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−		}
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−	}
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−
+
−	private void checkAutoCommit(boolean expectAutocommit) throws SQLException, Failure {
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−		// Create and fill the table, leave one row uncommitted.
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−		try (Connection conn = connect(); Statement stmt = conn.createStatement()) {
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−			// Does the connection itself believe to be in the correct mode?
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−			boolean autocommitEnabled = conn.getAutoCommit();
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−			if (autocommitEnabled != expectAutocommit) {
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−				throw new Failure("Expected autocommit to start as " + expectAutocommit + ", got " + autocommitEnabled);
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−			}
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−
+
−			// Let's test how it works out in practice
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−			stmt.execute("DROP TABLE IF EXISTS connectiontests");
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−			stmt.execute("CREATE TABLE connectiontests(i INT)");
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−			stmt.execute("INSERT INTO connectiontests VALUES (42)");
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−			if (!expectAutocommit)
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−				conn.commit();
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−			// This will only be committed in autocommit mode
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−			stmt.execute("INSERT INTO connectiontests VALUES (99)");
+
−		}
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−
+
−		// Check whether the uncommitted row is there or not
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−		try (Connection conn = connect(); Statement stmt = conn.createStatement()) {
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−			try (ResultSet rs = stmt.executeQuery("SELECT COUNT(i) FROM connectiontests")) {
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−				rs.next();
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−				int n = rs.getInt(1);
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−				if (expectAutocommit) {
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−					if (n != 2) {
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−						throw new Failure("Expected 2 rows because autocommit should be on, got " + n);
+
−					}
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−				} else {
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−					if (n != 1) {
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−						throw new Failure("Expected 1 row because autocommit should be off, got " + n);
+
−					}
+
−				}
+
−			}
+
−		}
+
−	}
+
−
+
−	private void testTimeZone() throws SQLException, Failure {
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−		try (Connection conn = connect(); Statement stmt = conn.createStatement()) {
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−			stmt.execute("DROP TABLE IF EXISTS connectiontests_ts");
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−			stmt.execute("CREATE TABLE connectiontests_ts(ts TIMESTAMP WITH TIME ZONE)");
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−			stmt.execute("INSERT INTO connectiontests_ts VALUES (str_to_timestamp(100, '%s'))");
+
−		}
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−
+
−		this.withTimeZone(0).verifyTimeZoneSuffix("+00:00");
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−		this.withTimeZone(240).verifyTimeZoneSuffix("+04:00");
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−		this.withTimeZone(270).verifyTimeZoneSuffix("+04:30");
+
−	}
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−
+
−	private void verifyTimeZoneSuffix(String suffix) throws SQLException, Failure {
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−		try (Connection conn = connect(); Statement stmt = conn.createStatement()) {
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−			ResultSet rs = stmt.executeQuery("SELECT * FROM connectiontests_ts");
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−			rs.next();
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−			String s = rs.getString(1);
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−			if (!s.endsWith(suffix)) {
+
−				String msg = String.format("Expected suffix '%s', got timestamp '%s'", suffix, s);
+
−				throw new Failure(msg);
+
−			}
+
−		}
+
−	}
+
−
+
−	private void cleanup() throws SQLException {
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−		try (Connection conn = connect(); Statement stmt = conn.createStatement()) {
+
−			stmt.execute("DROP TABLE IF EXISTS connectiontests");
+
−			stmt.execute("DROP TABLE IF EXISTS connectiontests_ts");
+
−		}
+
−	}
+
−
+
−	public class Failure extends Exception {
+
−		private static final long serialVersionUID = 1L;
+
−
+
−		public Failure(String msg) {
+
−			super(msg);
+
−		}
+
−
+
−		@Override
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−		public String getMessage() {
+
−			StringBuilder msg = new StringBuilder();
+
−			msg.append("When connected to ");
+
−			msg.append(url);
+
−			if (timeZone != null) {
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−				msg.append(", in time zone ");
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−				msg.append(timeZone.getID());
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−				msg.append(" (");
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−				msg.append(timeZone.getDisplayName());
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−				msg.append(")");
+
−			} else {
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−				msg.append(", in the default time zone");
+
−			}
+
−			if (connProps != null) {
+
−				msg.append(", with ");
+
−				msg.append(connProps.size());
+
−				msg.append(" properties");
+
−				connProps.forEach((k, v) -> {
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−					msg.append(", ");
+
−					msg.append(k);
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−					msg.append("=");
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−					msg.append(v);
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−				});
+
−			}
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−			msg.append(": ");
+
−			msg.append(super.getMessage());
+
−			return msg.toString();
+
−		}
+
−	}
+
−}