/*
* 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.commons.io.output;
import org.junit.Test;
import java.io.IOException;
import java.io.StringWriter;
import java.util.Random;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
public class WriterOutputStreamTest {
private static final String TEST_STRING = "\u00e0 peine arriv\u00e9s nous entr\u00e2mes dans sa chambre";
private static final String LARGE_TEST_STRING;
static {
final StringBuilder buffer = new StringBuilder();
for (int i=0; i<100; i++) {
buffer.append(TEST_STRING);
}
LARGE_TEST_STRING = buffer.toString();
}
private final Random random = new Random();
private void testWithSingleByteWrite(final String testString, final String charsetName) throws IOException {
final byte[] bytes = testString.getBytes(charsetName);
final StringWriter writer = new StringWriter();
final WriterOutputStream out = new WriterOutputStream(writer, charsetName);
for (final byte b : bytes) {
out.write(b);
}
out.close();
assertEquals(testString, writer.toString());
}
private void testWithBufferedWrite(final String testString, final String charsetName) throws IOException {
final byte[] expected = testString.getBytes(charsetName);
final StringWriter writer = new StringWriter();
final WriterOutputStream out = new WriterOutputStream(writer, charsetName);
int offset = 0;
while (offset < expected.length) {
final int length = Math.min(random.nextInt(128), expected.length-offset);
out.write(expected, offset, length);
offset += length;
}
out.close();
assertEquals(testString, writer.toString());
}
@Test
public void testUTF8WithSingleByteWrite() throws IOException {
testWithSingleByteWrite(TEST_STRING, "UTF-8");
}
@Test
public void testLargeUTF8WithSingleByteWrite() throws IOException {
testWithSingleByteWrite(LARGE_TEST_STRING, "UTF-8");
}
@Test
public void testUTF8WithBufferedWrite() throws IOException {
testWithBufferedWrite(TEST_STRING, "UTF-8");
}
@Test
public void testLargeUTF8WithBufferedWrite() throws IOException {
testWithBufferedWrite(LARGE_TEST_STRING, "UTF-8");
}
@Test
public void testUTF16WithSingleByteWrite() throws IOException {
try {
testWithSingleByteWrite(TEST_STRING, "UTF-16");
} catch (UnsupportedOperationException e){
if (!System.getProperty("java.vendor").contains("IBM")){
fail("This test should only throw UOE on IBM JDKs with broken UTF-16");
}
}
}
@Test
public void testUTF16WithBufferedWrite() throws IOException {
try {
testWithBufferedWrite(TEST_STRING, "UTF-16");
} catch (UnsupportedOperationException e) {
if (!System.getProperty("java.vendor").contains("IBM")) {
fail("This test should only throw UOE on IBM JDKs with broken UTF-16");
}
}
}
@Test
public void testUTF16BEWithSingleByteWrite() throws IOException {
testWithSingleByteWrite(TEST_STRING, "UTF-16BE");
}
@Test
public void testUTF16BEWithBufferedWrite() throws IOException {
testWithBufferedWrite(TEST_STRING, "UTF-16BE");
}
@Test
public void testUTF16LEWithSingleByteWrite() throws IOException {
testWithSingleByteWrite(TEST_STRING, "UTF-16LE");
}
@Test
public void testUTF16LEWithBufferedWrite() throws IOException {
testWithBufferedWrite(TEST_STRING, "UTF-16LE");
}
@Test
public void testFlush() throws IOException {
final StringWriter writer = new StringWriter();
final WriterOutputStream out = new WriterOutputStream(writer, "us-ascii", 1024, false);
out.write("abc".getBytes("us-ascii"));
assertEquals(0, writer.getBuffer().length());
out.flush();
assertEquals("abc", writer.toString());
out.close();
}
@Test
public void testWriteImmediately() throws IOException {
final StringWriter writer = new StringWriter();
final WriterOutputStream out = new WriterOutputStream(writer, "us-ascii", 1024, true);
out.write("abc".getBytes("us-ascii"));
assertEquals("abc", writer.toString());
out.close();
}
}