Spring Framework example source code file (PropertiesPersisterTests.java)

This example Spring Framework source code file (PropertiesPersisterTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

bytearrayoutputstream, defaultpropertiespersister, defaultpropertiespersister, io, ioexception, ioexception, properties, properties, propertiespersistertests, string, string, stringreader, stringwriter, testcase, util

The Spring Framework PropertiesPersisterTests.java source code

/*
 * Copyright 2002-2005 the original author or authors.
 *
 * Licensed 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.springframework.util;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.Properties;

import junit.framework.TestCase;

/**
 * @author Juergen Hoeller
 * @since 11.01.2005
 */
public class PropertiesPersisterTests extends TestCase {

	public void testPropertiesPersister() throws IOException {
		String propString = "code1=message1\ncode2:message2";
		Properties props = loadProperties(propString, false);
		String propCopy = storeProperties(props, null, false);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithWhitespace() throws IOException {
		String propString = " code1\t= \tmessage1\n  code2 \t  :\t mess\\\n \t  age2";
		Properties props = loadProperties(propString, false);
		String propCopy = storeProperties(props, null, false);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithHeader() throws IOException {
		String propString = "code1=message1\ncode2:message2";
		Properties props = loadProperties(propString, false);
		String propCopy = storeProperties(props, "myHeader", false);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithEmptyValue() throws IOException {
		String propString = "code1=message1\ncode2:message2\ncode3=";
		Properties props = loadProperties(propString, false);
		String propCopy = storeProperties(props, null, false);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithReader() throws IOException {
		String propString = "code1=message1\ncode2:message2";
		Properties props = loadProperties(propString, true);
		String propCopy = storeProperties(props, null, true);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithReaderAndWhitespace() throws IOException {
		String propString = " code1\t= \tmessage1\n  code2 \t  :\t mess\\\n \t  age2";
		Properties props = loadProperties(propString, true);
		String propCopy = storeProperties(props, null, true);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithReaderAndHeader() throws IOException {
		String propString = "code1\t=\tmessage1\n  code2 \t  : \t message2";
		Properties props = loadProperties(propString, true);
		String propCopy = storeProperties(props, "myHeader", true);
		loadProperties(propCopy, false);
	}

	public void testPropertiesPersisterWithReaderAndEmptyValue() throws IOException {
		String propString = "code1=message1\ncode2:message2\ncode3=";
		Properties props = loadProperties(propString, true);
		String propCopy = storeProperties(props, null, true);
		loadProperties(propCopy, false);
	}

	private Properties loadProperties(String propString, boolean useReader) throws IOException {
		DefaultPropertiesPersister persister = new DefaultPropertiesPersister();
		Properties props = new Properties();
		if (useReader) {
			persister.load(props, new StringReader(propString));
		}
		else {
			persister.load(props, new ByteArrayInputStream(propString.getBytes()));
		}
		assertEquals("message1", props.getProperty("code1"));
		assertEquals("message2", props.getProperty("code2"));
		return props;
	}

	private String storeProperties(Properties props, String header, boolean useWriter) throws IOException {
		DefaultPropertiesPersister persister = new DefaultPropertiesPersister();
		String propCopy = null;
		if (useWriter) {
			StringWriter propWriter = new StringWriter();
			persister.store(props, propWriter, header);
			propCopy = propWriter.toString();
		}
		else {
			ByteArrayOutputStream propOut = new ByteArrayOutputStream();
			persister.store(props, propOut, header);
			propCopy = new String(propOut.toByteArray());
		}
		if (header != null) {
			assertTrue(propCopy.indexOf(header) != -1);
		}
		assertTrue(propCopy.indexOf("\ncode1=message1") != -1);
		assertTrue(propCopy.indexOf("\ncode2=message2") != -1);
		return propCopy;
	}

}