SecurityException when using ClassImposteriser

Hi all,

With both JMock 2.5.1 and 2.6RC1, I'm getting a stack trace when using
ClassImposteriser. The stack trace is included at the end of this
message. Any ideas as to how resolve this issue?

Not sure if it's significant, but I'm running my test with Eclipse. The
JMock JARs are bundled in an Eclipse plugin project on which my test
plugin depends.

Here's the test class:

@RunWith(JMock.class)
public class MigrationStrategyTest {
       
        private final MigrationContext context = new MigrationContext();
       
        private Mockery mockery;
       
        @Before
        public void setup() {
                mockery = new JUnit4Mockery() {{
                        setImposteriser(ClassImposteriser.INSTANCE);
                }};
               
                // create mock objects
        }

        @Test
        public void delegatesToApplicableRule() {
               
                mockery.checking(new Expectations() {{
                        // set expectations
                }});
               
                // execute
                strategy.migrate(original, context);
        }
}

Cheers,
Louis.

----
Louis Rose
Research Student
Department of Computer Science,
University of York,
Heslington, York, YO10 5DD, United Kingdom.
+44 1904 434762
Twitter: @louismrose


java.lang.SecurityException: class "org.hamcrest.TypeSafeMatcher"'s
signer information does not match signer information of other classes in
the same package
        at java.lang.ClassLoader.checkCerts(ClassLoader.java:858)
        at java.lang.ClassLoader.preDefineClass(ClassLoader.java:570)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:697)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:402)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:703)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
        at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:402)
        at
org.jmock.internal.InvocationExpectationBuilder.createExpectationFrom(InvocationExpectationBuilder.java:86)
        at
org.jmock.internal.InvocationToExpectationTranslator.invoke(InvocationToExpectationTranslator.java:19)
        at org.jmock.internal.FakeObjectMethods.invoke(FakeObjectMethods.java:38)
        at
org.jmock.lib.legacy.ClassImposteriser$4.invoke(ClassImposteriser.java:137)
        at
org.eclipse.epsilon.migration.copy.Copier$$EnhancerByCGLIB$$987188f5.copy(<generated>)
        at
org.eclipse.epsilon.migration.model.MigrationStrategyTest$2.<init>(MigrationStrategyTest.java:66)
        at
org.eclipse.epsilon.migration.model.MigrationStrategyTest.delegatesToApplicableRule(MigrationStrategyTest.java:65)
        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 org.junit.internal.runners.TestMethod.invoke(TestMethod.java:66)
        at org.jmock.integration.junit4.JMock$1.invoke(JMock.java:37)
        at
org.junit.internal.runners.MethodRoadie.runTestMethod(MethodRoadie.java:105)
        at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:86)
        at
org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:94)
        at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:84)
        at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49)
        at
org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:96)
        at
org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:59)
        at
org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:52)
        at
org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
        at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
        at
org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:50)
        at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)
        at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
        at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
        at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
        at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
        at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)


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