Re: How do I use Junit to test whether catch the Exception

Hi, all!

Could anyone tell me why the following test fails if run by Eclipse
v3.3?

Here's the class:
public class ProvaJUnit {
    public void yuppidu () throws IllegalArgumentException {
        throw new IllegalArgumentException ();
    }
}

Test case follows:
import org.junit.Test;
import junit.framework.TestCase;
public class ProvaJUnitTest extends TestCase {
    @Test(expected=IllegalArgumentException.class)
    public void testYuppidu () {
        new ProvaJUnit ().yuppidu();
    }
}

Classes are in the same package. The test fails but the failure trace
is as follows:
java.lang.IllegalArgumentException
    at provajunit.ProvaJUnit.yuppidu(ProvaJUnit.java:13)
    at provajunit.ProvaJUnitTest.testYuppidu(ProvaJUnitTest.java:20)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:
39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at junit.framework.TestCase.runTest(TestCase.java:168)
    at junit.framework.TestCase.runBare(TestCase.java:134)
    at junit.framework.TestResult$1.protect(TestResult.java:110)
    at junit.framework.TestResult.runProtected(TestResult.java:128)
    at junit.framework.TestResult.run(TestResult.java:113)
    at junit.framework.TestCase.run(TestCase.java:124)
    at junit.framework.TestSuite.runTest(TestSuite.java:232)
    at junit.framework.TestSuite.run(TestSuite.java:227)
    at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:
130)
    at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:
38)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:
460)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:
673)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:
386)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:
196)

Shouldn't the test succeed?
Thanks.