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/*
*
* Derby - Class org.apache.derbyTesting.functionTests.tests.store.RecoveryTest
*
* 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.derbyTesting.functionTests.tests.store;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import junit.framework.Test;
import org.apache.derbyTesting.junit.BaseJDBCTestCase;
import org.apache.derbyTesting.junit.BaseTestSuite;
import org.apache.derbyTesting.junit.CleanDatabaseTestSetup;
import org.apache.derbyTesting.junit.JDBC;
import org.apache.derbyTesting.junit.TestConfiguration;
/**
* DERBY-4249 This class can be used as a framework to create junit Recovery
* Test or converting harness Recovery Tests to junit tests.
**/
public final class RecoveryTest extends BaseJDBCTestCase
{
public RecoveryTest(String name)
{
super(name);
}
public static Test suite()
{
// Add the test case into the test suite
BaseTestSuite suite = new BaseTestSuite("RecoveryTest");
suite.addTest(decorateTest());
return suite;
}
private static Test decorateTest()
{
Test test = new CleanDatabaseTestSetup(TestConfiguration.embeddedSuite(
RecoveryTest.class));
return test;
}
/**
* Tests the recovery of database. The test achieves its purpose
* as follows:
* Connect, create a table, commit and shutdown the database.
* fork a jvm, add one row, commit, add another row, exit the jvm(killed).
* Reconnect with the first jvm and verify that the first row is there
* and the second is not.
* When a new JVM connects, the log entries are read one by one and it
* then rolls back to the transaction boundaries, then the database is
* in a consistent state.
* @throws Exception
*/
public void testBasicRecovery() throws Exception
{
Connection c = getConnection();
c.setAutoCommit(false);
Statement st = createStatement();
st.executeUpdate("create table t( i int )");
c.commit();
TestConfiguration.getCurrent().shutdownDatabase();
st.close();
c.close();
//fork JVM
assertLaunchedJUnitTestMethod("org.apache.derbyTesting.functionTests.tests.store.RecoveryTest.launchRecoveryInsert");
st = createStatement();
ResultSet rs = st.executeQuery("select i from t");
JDBC.assertFullResultSet(rs, new String[][] { { "1956" } } );
}
/**
* This fixture is used by the forked JVM to add and commit rows to the
* database in the first JVM. Note that this routine does not shutdown
* the database, and thus executes a "dirty" shutdown. This dirty
* shutdown is why we are forking the JVM so that we can test recovery
* codepaths during the reboot of the database.
*
* Do not call TestConfiguration.getCurrent().shutdownDatabase(), as
* that will do a clean shutdown and leave no work for restart recovery
* to do. The point of assertLaunchedJUnitTestMethod() is to launch
* a separate process, crash it after some work, and then do restart
* recovery to test those code paths that only get exercised when restart
* starts on a non-cleanly shutdown database.
*
* @throws SQLException
**/
public void launchRecoveryInsert() throws SQLException
{
Connection c = getConnection();
c.setAutoCommit(false);
Statement st = createStatement();
st.executeUpdate("insert into t(i) values (1956)");
c.commit();
st.executeUpdate("insert into t(i) values (2011)");
}
}
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