TransactionTest.java

/*
 Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
 

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  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);
		}
	}
}