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Re: JUnit and Testcases

I looked for a main before posting. Apparently not carefully enough.


You certainly aren't alone if you think the example that I posted was a bit longer than absolutely necessary; I simply grabbed one of the last testcases that I pulled out of a bug report and transformed into a JUnit test. More than one person has asked for a simpler example showing the flavor of a JUnit test. So...

Try the following:

1) Download JUnit, grab "junit.jar" and put it in your classpath.
(See www.junit.org or junit.sourceforge.net)
(I just stick junit.jar in /Library/Java/Extensions/ because I use it so much)
2) Cut and paste the file below into someplace convenient like /tmp/TrivialTest.java
3) cd /tmp/
4) javac TrivialTest.java
5) java TrivialTest

To see what a failure looks like, change the sense of one of the asserts so that it says myPi > 4.




/*
* File : TrivialTest.java
*/

import java.lang.Math;
import junit.framework.*;


public class TrivialTest extends TestCase {
protected double myPi;

protected void setUp() {
myPi = Math.PI;
}

public void testPI() {
assertTrue("Pi bigger than 3", myPi > 3);
assertTrue("Pi smaller than 4", myPi < 4);
}

// Boilerplate below so it can be run from the command line

public static Test suite() {
return new TestSuite(TrivialTest.class);
}

public static void main (String[] args) {
junit.textui.TestRunner.run(suite());
}
}
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References: 
 >JUnit and Testcases (From: Michael McDougall <email@hidden>)
 >Re: JUnit and Testcases (From: Timothy Wall <email@hidden>)



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