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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002,2010 Oracle. All rights reserved.
*
* $Id: JUnitThread.java,v 1.21.2.2 2010/01/04 15:30:43 cwl Exp $
*/
package com.sleepycat.je.junit;
import junit.framework.Assert;
/**
* JUnitThread is a utility class that allows JUtil assertions to be
* run in other threads. A JUtil assertion thrown from a
* thread other than the invoking one can not be caught by JUnit.
* This class allows these AssertionFailedErrors to be caught and
* passed back to the original thread.
* <p>
* To use, create a JUnitThread and override the testBody() method with
* the test code. Then call doTest() on the thread to run the test
* and re-throw any assertion failures that were thrown by the
* subthread.
* <p>
* Example:
* <pre>
public void testEquality() {
JUnitThread tester =
new JUnitThread("testEquality") {
public void testBody() {
int one = 1;
assertTrue(one == 1);
}
};
tester.doTest();
}
* </pre>
*/
public class JUnitThread extends Thread {
private Throwable errorReturn;
/**
* Construct a new JUnitThread.
*/
public JUnitThread(String name) {
super(name);
}
public void run() {
try {
testBody();
} catch (Throwable T) {
errorReturn = T;
}
}
/**
* Method that is to be overridden by the user. Code should be
* the guts of the test. assertXXXX() methods may be called in
* this method.
*/
public void testBody()
throws Throwable {
}
/**
* This method should be called after the JUnitThread has been
* constructed to cause the actual test to be run and any failures
* to be returned.
*/
public void doTest()
throws Throwable {
start();
finishTest();
}
/**
* This method should be called after the JUnitThread has been
* started to cause the test to report any failures.
*/
public void finishTest()
throws Throwable {
try {
join();
} catch (InterruptedException IE) {
Assert.fail("caught unexpected InterruptedException");
}
if (errorReturn != null) {
throw errorReturn;
}
}
public String toString() {
return "<JUnitThread: " + super.toString() + ">";
}
}
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