TransactionTest.java

/*
 Copyright  2002-2004 MySQL AB, 2008 Sun Microsystems
 All rights reserved. Use is subject to license terms.

  The MySQL Connector/J is licensed under the terms of the GPL,
  like most MySQL Connectors. There are special exceptions to the
  terms and conditions of the GPL as it is applied to this software,
  see the FLOSS License Exception available on mysql.com.

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; version 2 of the
  License.

  This program is distributed in the hope that it will be useful,  
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  02110-1301 USA



 */
package testsuite.simple;

import java.sql.SQLException;

import testsuite.BaseTestCase;

/**
 * 
 * @author Mark Matthews
 * @version $Id: TransactionTest.java,v 1.1.2.1 2005/05/13 18:58:37 mmatthews
 *          Exp $
 */
public class TransactionTest extends BaseTestCase {
	// ~ Static fields/initializers
	// ---------------------------------------------

	private static final double DOUBLE_CONST = 25.4312;

	private static final double EPSILON = .0000001;

	// ~ Constructors
	// -----------------------------------------------------------

	/**
	 * Creates a new TransactionTest object.
	 * 
	 * @param name
	 *            DOCUMENT ME!
	 */
	public TransactionTest(String name) {
		super(name);
	}

	// ~ Methods
	// ----------------------------------------------------------------

	/**
	 * Runs all test cases in this test suite
	 * 
	 * @param args
	 */
	public static void main(String[] args) {
		junit.textui.TestRunner.run(TransactionTest.class);
	}

	/**
	 * DOCUMENT ME!
	 * 
	 * @throws Exception
	 *             DOCUMENT ME!
	 */
	public void setUp() throws Exception {
		super.setUp();
	}

	/**
	 * DOCUMENT ME!
	 * 
	 * @throws SQLException
	 *             DOCUMENT ME!
	 */
	public void testTransaction() throws SQLException {
		try {
			createTable("trans_test", "(id INT NOT NULL PRIMARY KEY, decdata DOUBLE)", "InnoDB");
			this.conn.setAutoCommit(false);
			this.stmt
					.executeUpdate("INSERT INTO trans_test (id, decdata) VALUES (1, 1.0)");
			this.conn.rollback();
			this.rs = this.stmt.executeQuery("SELECT * from trans_test");

			boolean hasResults = this.rs.next();
			assertTrue("Results returned, rollback to empty table failed",
					(hasResults != true));
			this.stmt
					.executeUpdate("INSERT INTO trans_test (id, decdata) VALUES (2, "
							+ DOUBLE_CONST + ")");
			this.conn.commit();
			this.rs = this.stmt
					.executeQuery("SELECT * from trans_test where id=2");
			hasResults = this.rs.next();
			assertTrue("No rows in table after INSERT", hasResults);

			double doubleVal = this.rs.getDouble(2);
			double delta = Math.abs(DOUBLE_CONST - doubleVal);
			assertTrue("Double value returned != " + DOUBLE_CONST,
					(delta < EPSILON));
		} finally {
			this.conn.setAutoCommit(true);
		}
	}
}