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/**
* Derby - Class org.apache.derbyTesting.functionTests.tests.lang.CharUTF8Test
*
* 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.lang;
import java.sql.Connection;
import java.sql.PreparedStatement;
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;
/**
* Test all characters written through the UTF8 format.
*/
public class CharUTF8Test extends BaseJDBCTestCase {
private PreparedStatement psSet;
private PreparedStatement psGet;
/**
* Basic constructor.
*/
public CharUTF8Test(String name) {
super(name);
}
/**
* Sets the auto commit to false.
*/
protected void initializeConnection(Connection conn) throws SQLException {
conn.setAutoCommit(false);
}
/**
* Returns the implemented tests.
*
* @return An instance of <code>Test</code> with the implemented tests to
* run.
*/
public static Test suite() {
return new CleanDatabaseTestSetup(
new BaseTestSuite(CharUTF8Test.class)) {
protected void decorateSQL(Statement stmt) throws SQLException {
stmt.execute("CREATE TABLE TEST(id int not null primary key, body varchar(60))");
}
};
}
protected void setUp() throws Exception {
super.setUp();
psSet = prepareStatement("insert into test values(?,?)");
psGet = prepareStatement("select body from test where id=?");
}
protected void tearDown() throws Exception {
// Forget the statements to allow them to be gc'ed. They will be
// closed in super.tearDown().
psSet = null;
psGet = null;
super.tearDown();
}
/**
* Tests the correct handling of UTF8 char sequence.
*
* This test iteratively writes on a test table a sequence of 60 UTF8 chars; next, in the same iteration, it
* reads the string and checks if the written sequence is correct.
*
* @throws SQLException
*/
public void testUTF8() throws SQLException {
for (int i = Character.MIN_VALUE; i <= Character.MAX_VALUE; i++) {
StringBuffer buff = new StringBuffer();
buff.append((char) i);
if ((buff.length() == 60) || (i == Character.MAX_VALUE)) {
String text = buff.toString();
//System.out.println("Testing with last char value " + i + " length=" + text.length());
setBody(i, text); // set the text
String res = getBody(i); // now read the text
assertEquals("Fetched string is incorrect (length = " + buff.length() + ")", text, res);
buff.setLength(0);
}
}
}
/**
* Checks if an empty UTF8 string is correctly handled.
*
* @throws SQLException
*/
public void testEmptyStringUTF8() throws SQLException {
setBody(-1, "");
assertEquals("Empty string incorrect!", "", getBody(-1));
}
private void setBody(int key, String body) throws SQLException {
psSet.setInt(1, key);
psSet.setString(2, body);
psSet.executeUpdate();
}
private String getBody(int key) throws SQLException {
String result = "NO RESULT";
psGet.setInt(1, key);
ResultSet rs = psGet.executeQuery();
if (rs.next()) {
result = rs.getString(1);
}
rs.close();
return result;
}
}
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