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/*
* 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.harmony.tests.java.lang;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
public class ProcessTest extends junit.framework.TestCase {
public void test_55017() throws Exception {
ArrayList<Process> children = new ArrayList<Process>();
for (int i = 0; i < 256; ++i) {
try {
children.add(Runtime.getRuntime().exec(new String[] { "/system/bin/does-not-exist" }, null, null));
System.gc();
} catch (IOException expected) {
}
}
assertEquals(0, children.size());
boolean onDevice = new File("/system/bin").exists();
String[] psCommand = onDevice ? new String[] { "ps" } : new String[] { "ps", "s" };
Process ps = Runtime.getRuntime().exec(psCommand, null, null);
int zombieCount = 0;
for (String line : readAndCloseStream(ps.getInputStream()).split("\n")) {
if (line.contains(" Z ") || line.contains(" Z+ ")) {
++zombieCount;
}
}
assertEquals(0, zombieCount);
}
public void test_getOutputStream() throws Exception {
String[] commands = { "cat", "-"};
Process p = Runtime.getRuntime().exec(commands, null, null);
OutputStream os = p.getOutputStream();
// send data, and check if it is echoed back correctly
String str1 = "Some data for testing communication between processes\n";
String str2 = "More data that serves the same purpose.\n";
String str3 = "Here is some more data.\n";
os.write(str1.getBytes());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
os.write(str2.getBytes());
os.write(str3.getBytes());
os.close();
String received = readAndCloseStream(p.getInputStream());
assertEquals(str1 + str2 + str3, received);
String stderr = readAndCloseStream(p.getErrorStream());
assertEquals("", stderr);
p.waitFor();
p.destroy();
}
public void test_getErrorStream() throws Exception {
String[] commands = { "cat", "--no-such-option"};
Process p = Runtime.getRuntime().exec(commands, null, null);
p.getOutputStream().close();
String received = readAndCloseStream(p.getInputStream());
assertEquals("", received);
String stderr = readAndCloseStream(p.getErrorStream());
assertTrue(stderr, stderr.contains("unrecognized option") || stderr.contains("invalid option"));
p.waitFor();
p.destroy();
}
private String readAndCloseStream(InputStream is) throws IOException {
StringBuffer result = new StringBuffer();
while (true) {
int c = is.read();
if (c == -1) {
break;
}
result.append((char) c);
}
is.close();
return result.toString();
}
public void test_exitValue() throws Exception {
String[] commands = { "ls" };
Process process = Runtime.getRuntime().exec(commands, null, null);
process.waitFor();
assertEquals(0, process.exitValue());
String[] commandsSleep = { "sleep", "3000" };
process = Runtime.getRuntime().exec(commandsSleep, null, null);
process.destroy();
process.waitFor(); // destroy is asynchronous.
assertTrue(process.exitValue() != 0);
process = Runtime.getRuntime().exec(new String[] { "sleep", "3000" }, null, null);
try {
process.exitValue();
fail();
} catch(IllegalThreadStateException expected) {
}
}
public void test_destroy() throws Exception {
String[] commands = { "ls"};
Process process = Runtime.getRuntime().exec(commands, null, null);
process.destroy();
process.destroy();
process.destroy();
}
}
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