/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
package org.apache.openejb.observer;
import org.apache.openejb.observer.event.AfterEvent;
import org.apache.openejb.observer.event.BeforeEvent;
import org.apache.openejb.observer.event.ObserverFailed;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import static org.junit.Assert.assertEquals;
public class Util {
public static String join(final Object... collection) {
return join(Arrays.asList(collection));
}
public static String join(final Collection<?> collection) {
final String delimiter = "\n";
if (collection.size() == 0) {
return "";
}
final StringBuilder sb = new StringBuilder();
for (final Object obj : collection) {
sb.append(obj).append(delimiter);
}
return sb.substring(0, sb.length() - delimiter.length());
}
static void assertEvent(final List<String> observed, final String... expected) {
assertEquals(join(expected), join(observed));
}
static Method caller(final int i) {
try {
final StackTraceElement[] stackTrace = new Exception().fillInStackTrace().getStackTrace();
final String methodName = stackTrace[i].getMethodName();
final String className = stackTrace[i].getClassName();
final Class<?> clazz = Util.class.getClassLoader().loadClass(className);
for (final Method method : clazz.getDeclaredMethods()) {
if (methodName.endsWith(method.getName())) {
return method;
}
}
throw new NoSuchMethodException(methodName);
} catch (final NoSuchMethodException e) {
throw new RuntimeException(e);
} catch (final ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
static String description(final Object event) {
if (event instanceof ObserverFailed) {
final ObserverFailed observerFailed = (ObserverFailed) event;
return "ObserverFailed{" + observerFailed.getMethod().getName() + "}";
}
if (event instanceof BeforeEvent) {
return "BeforeEvent<" + description(((BeforeEvent) event).getEvent()) + ">";
}
if (event instanceof AfterEvent) {
return "AfterEvent<" + description(((AfterEvent) event).getEvent()) + ">";
}
return event.getClass().getSimpleName();
}
}