/*
* 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.brooklyn.util.stream;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertFalse;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import org.apache.brooklyn.test.Asserts;
import org.apache.brooklyn.util.os.Os;
import org.apache.brooklyn.util.stream.StreamGobbler;
import org.testng.annotations.Test;
public class StreamGobblerTest {
private String NL = Os.LINE_SEPARATOR;
@Test
public void testGobbleStream() throws Exception {
byte[] bytes = new byte[] {'a','b','c'};
InputStream stream = new ByteArrayInputStream(bytes);
ByteArrayOutputStream out = new ByteArrayOutputStream();
StreamGobbler gobbler = new StreamGobbler(stream, out, null);
gobbler.start();
try {
gobbler.join(10*1000);
assertFalse(gobbler.isAlive());
assertEquals(new String(out.toByteArray()), "abc" + NL);
} finally {
gobbler.close();
gobbler.interrupt();
}
}
@Test
public void testGobbleMultiLineBlockingStream() throws Exception {
PipedOutputStream pipedOutputStream = new PipedOutputStream();
PipedInputStream stream = new PipedInputStream(pipedOutputStream);
ByteArrayOutputStream out = new ByteArrayOutputStream();
StreamGobbler gobbler = new StreamGobbler(stream, out, null);
gobbler.start();
try {
pipedOutputStream.write("line1\n".getBytes());
assertEqualsEventually(out, "line1" + NL);
pipedOutputStream.write("line2\n".getBytes());
assertEqualsEventually(out, "line1" + NL + "line2" + NL);
pipedOutputStream.write("line".getBytes());
pipedOutputStream.write("3\n".getBytes());
assertEqualsEventually(out, "line1" + NL + "line2" + NL + "line3" + NL);
pipedOutputStream.close();
gobbler.join(10*1000);
assertFalse(gobbler.isAlive());
assertEquals(new String(out.toByteArray()), "line1" + NL + "line2" + NL + "line3" + NL);
} finally {
gobbler.close();
gobbler.interrupt();
}
}
private void assertEqualsEventually(final ByteArrayOutputStream out, final String expected) {
Asserts.succeedsEventually(new Runnable() {
public void run() {
assertEquals(new String(out.toByteArray()), expected);
}});
}
}