Spring Framework example source code file (FileCopyUtilsTests.java)

This example Spring Framework source code file (FileCopyUtilsTests.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

bytearrayinputstream, bytearrayoutputstream, filecopyutilstests, io, ioexception, ioexception, string, string, stringreader, stringreader, stringwriter, stringwriter, testcase, util

The Spring Framework FileCopyUtilsTests.java source code

/*
 * Copyright 2002-2006 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.Arrays;

import junit.framework.TestCase;

/**
 * Unit tests for the FileCopyUtils class.
 *
 * @author Juergen Hoeller
 * @since 12.03.2005
 */
public class FileCopyUtilsTests extends TestCase {

	public void testCopyFromInputStream() throws IOException {
		byte[] content = "content".getBytes();
		ByteArrayInputStream in = new ByteArrayInputStream(content);
		ByteArrayOutputStream out = new ByteArrayOutputStream(content.length);
		int count = FileCopyUtils.copy(in, out);
		assertEquals(content.length, count);
		assertTrue(Arrays.equals(content, out.toByteArray()));
	}

	public void testCopyFromByteArray() throws IOException {
		byte[] content = "content".getBytes();
		ByteArrayOutputStream out = new ByteArrayOutputStream(content.length);
		FileCopyUtils.copy(content, out);
		assertTrue(Arrays.equals(content, out.toByteArray()));
	}

	public void testCopyToByteArray() throws IOException {
		byte[] content = "content".getBytes();
		ByteArrayInputStream in = new ByteArrayInputStream(content);
		byte[] result = FileCopyUtils.copyToByteArray(in);
		assertTrue(Arrays.equals(content, result));
	}

	public void testCopyFromReader() throws IOException {
		String content = "content";
		StringReader in = new StringReader(content);
		StringWriter out = new StringWriter();
		int count = FileCopyUtils.copy(in, out);
		assertEquals(content.length(), count);
		assertEquals(content, out.toString());
	}

	public void testCopyFromString() throws IOException {
		String content = "content";
		StringWriter out = new StringWriter();
		FileCopyUtils.copy(content, out);
		assertEquals(content, out.toString());
	}

	public void testCopyToString() throws IOException {
		String content = "content";
		StringReader in = new StringReader(content);
		String result = FileCopyUtils.copyToString(in);
		assertEquals(content, result);
	}

}