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package org.python.util.install;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import junit.framework.TestCase;
public class ChildProcessTest extends TestCase {
private final static String CLASS_NAME = "org.python.util.install.ChildProcessExample";
/**
* test a default child process
*/
public void testDefault() {
ChildProcess childProcess = new ChildProcess();
String command[] = buildJavaCommand(CLASS_NAME);
childProcess.setCommand(command);
childProcess.setDebug(true);
int exitValue = childProcess.run();
assertEquals("Expected child process to end normally instead of " + exitValue, 0, exitValue);
}
/**
* test the child process with a timeout
*/
public void testTimeout() {
ChildProcess childProcess = new ChildProcess();
String command[] = buildJavaCommand(CLASS_NAME);
childProcess.setCommand(command);
childProcess.setDebug(true);
childProcess.setTimeout(2000); // timeout to 2 seconds
int exitValue = childProcess.run();
assertEquals("Expected child process to be destroyed instead of " + exitValue,
ChildProcess.DESTROYED_AFTER_TIMEOUT,
exitValue);
}
/**
* test silent mode
*/
public void testSilent() throws IOException {
ChildProcess childProcess = new ChildProcess();
String command[] = new String[] {"lwiklsl", "-siwK"};
childProcess.setCommand(command);
childProcess.setDebug(false);
childProcess.setSilent(true);
ByteArrayOutputStream redirectedErr = new ByteArrayOutputStream();
ByteArrayOutputStream redirectedOut = new ByteArrayOutputStream();
int exitValue = 0;
PrintStream oldErr = System.err;
PrintStream oldOut = System.out;
try {
System.setErr(new PrintStream(redirectedErr));
System.setOut(new PrintStream(redirectedOut));
exitValue = childProcess.run();
} finally {
System.setErr(oldErr);
System.setOut(oldOut);
}
assertTrue(0 != exitValue);
redirectedErr.flush();
redirectedOut.flush();
assertEquals(0, redirectedErr.size());
assertEquals(0, redirectedOut.size());
}
//
// private methods
//
private String[] buildJavaCommand(String classAndArguments) {
String quote = "";
if (System.getProperty("os.name", "unknown").toLowerCase().indexOf("windows") >= 0) {
quote = "\"";
}
String classpath = System.getProperty("java.class.path");
return new String[] {"java", "-classpath", quote.concat(classpath).concat(quote), classAndArguments};
}
}
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