/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.test.synth;
import java.io.File;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Random;
import org.h2.test.TestBase;
import org.h2.tools.Backup;
import org.h2.tools.DeleteDbFiles;
/**
* A recovery test that checks the consistency of a database (if it exists),
* then deletes everything and runs in an endless loop executing random
* operations. This loop is usually stopped by switching off the computer.
*/
public class TestTimer extends TestBase {
/**
* Run just this test.
*
* @param a ignored
*/
public static void main(String... a) throws Exception {
TestBase.createCaller().init().test();
}
public void test() throws SQLException {
validateOld();
DeleteDbFiles.execute(getBaseDir(), "timer", true);
loop();
}
private void loop() throws SQLException {
println("loop");
Connection conn = getConnection("timer");
Statement stat = conn.createStatement();
stat.execute("CREATE TABLE TEST(ID IDENTITY, NAME VARCHAR)");
Random random = new Random();
int max = 0;
int count = 0;
long startTime = System.currentTimeMillis();
while (true) {
int action = random.nextInt(10);
int x = max == 0 ? 0 : random.nextInt(max);
switch (action) {
case 0:
case 1:
case 2:
stat.execute("INSERT INTO TEST VALUES(NULL, 'Hello')");
ResultSet rs = stat.getGeneratedKeys();
rs.next();
int i = rs.getInt(1);
max = i;
count++;
break;
case 3:
case 4:
if (count == 0) {
break;
}
stat.execute("UPDATE TEST SET NAME=NAME||'+' WHERE ID=" + x);
break;
case 5:
case 6:
if (count == 0) {
break;
}
count -= stat.executeUpdate("DELETE FROM TEST WHERE ID=" + x);
break;
case 7:
rs = stat.executeQuery("SELECT COUNT(*) FROM TEST");
rs.next();
int c = rs.getInt(1);
assertEquals(count, c);
long time = System.currentTimeMillis();
if (time > startTime + 5000) {
println("rows: " + count);
startTime = time;
}
break;
default:
}
}
}
private void validateOld() {
println("validate");
try {
Connection conn = getConnection("timer");
// TODO validate transactions
Statement stat = conn.createStatement();
stat.execute("CREATE TABLE IF NOT EXISTS TEST(ID IDENTITY, NAME VARCHAR)");
ResultSet rs = stat.executeQuery("SELECT COUNT(*) FROM TEST");
rs.next();
int count = rs.getInt(1);
println("row count: " + count);
int real = 0;
rs = stat.executeQuery("SELECT * FROM TEST");
while (rs.next()) {
real++;
}
if (real != count) {
println("real count: " + real);
throw new AssertionError("COUNT(*)=" + count + " SELECT=" + real);
}
rs = stat.executeQuery("SCRIPT");
while (rs.next()) {
rs.getString(1);
}
conn.close();
} catch (Throwable e) {
logError("validate", e);
backup();
}
}
private void backup() {
println("backup");
for (int i = 0;; i++) {
String s = "timer." + i + ".zip";
File f = new File(s);
if (f.exists()) {
continue;
}
try {
Backup.execute(s, getBaseDir(), "timer", true);
} catch (SQLException e) {
logError("backup", e);
}
break;
}
}
}