New test for modifying the ExceptionStack

api/src/main/java/org/jboss/seam/exception/control/ExceptionStack.java

@@ -137,12 +137,7 @@ public Throwable getCurrent()
       return current;
    }
 
-   public Collection<Throwable> getElements()
-   {
-      return Collections.unmodifiableCollection(elements);
-   }
-
-   public void setElements(Collection<Throwable> elements)
+   public void setCauseElements(Collection<Throwable> elements)
    {
       this.elements = Collections.unmodifiableCollection(elements);
       this.init();

impl/src/test/java/org/jboss/seam/exception/control/test/stack/ExceptionStackTest.java

@@ -46,7 +46,7 @@ public void testSQLExceptionUnwrap()
 
       ExceptionStack es = new ExceptionStack(e);
 
-      assertThat(es.getElements().size(), is(4));
-      assertThat(es.getElements(), hasItems(e, transactionRollbackException, recoverableException, syntaxErrorException));
+      assertThat(es.getCauseElements().size(), is(4));
+      assertThat(es.getCauseElements(), hasItems(e, transactionRollbackException, recoverableException, syntaxErrorException));
    }
 }

impl/src/test/java/org/jboss/seam/exception/control/test/stack/ModifyExceptionStackTest.java

@@ -0,0 +1,88 @@
+/*
+ * JBoss, Home of Professional Open Source
+ * Copyright 2011, Red Hat, Inc., and individual contributors
+ * by the @authors tag. See the copyright.txt in the distribution for a
+ * full listing of individual contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ *
+ * @author <a href="http://community.jboss.org/people/LightGuard">Jason Porter</a>
+ */
+package org.jboss.seam.exception.control.test.stack;
+
+import java.util.ArrayList;
+
+import javax.enterprise.event.Event;
+import javax.enterprise.event.Observes;
+
+import org.jboss.arquillian.api.Deployment;
+import org.jboss.arquillian.junit.Arquillian;
+import org.jboss.seam.exception.control.CaughtException;
+import org.jboss.seam.exception.control.ExceptionStack;
+import org.jboss.seam.exception.control.ExceptionToCatch;
+import org.jboss.seam.exception.control.Handles;
+import org.jboss.seam.exception.control.HandlesExceptions;
+import org.jboss.seam.exception.control.extension.CatchExtension;
+import org.jboss.shrinkwrap.api.Archive;
+import org.jboss.shrinkwrap.api.ArchivePaths;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.asset.ByteArrayAsset;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.hamcrest.CoreMatchers.not;
+import static org.junit.Assert.assertThat;
+import static org.junit.matchers.JUnitMatchers.hasItem;
+
+@RunWith(Arquillian.class)
+@HandlesExceptions
+public class ModifyExceptionStackTest
+{
+   private Exception startException;
+
+   @Deployment
+   public static Archive<?> createTestArchive()
+   {
+      return ShrinkWrap.create(JavaArchive.class)
+            .addPackage(CaughtException.class.getPackage())
+            .addClasses(ModifyExceptionStackTest.class, CatchExtension.class)
+            .addManifestResource("META-INF/services/javax.enterprise.inject.spi.Extension")
+            .addManifestResource(new ByteArrayAsset(new byte[0]), ArchivePaths.create("beans.xml"));
+   }
+
+   public static class ApplicationException extends Exception
+   {
+
+   }
+
+   @Test
+   public void assertModifyingStack(Event<ExceptionToCatch> event)
+   {
+      this.startException = new Exception(new NullPointerException());
+      event.fire(new ExceptionToCatch(this.startException));
+   }
+
+   public void changeStackObserver(@Observes ExceptionStack stack)
+   {
+      ArrayList<Throwable> causes = new ArrayList<Throwable>(stack.getCauseElements());
+      causes.set(0, new ApplicationException());
+      stack.setCauseElements(causes);
+   }
+
+   public void assertionHandler(@Handles CaughtException<Throwable> e)
+   {
+      assertThat(e.getExceptionStack().getCauseElements(), not(hasItem((Throwable) this.startException)));
+   }
+}