LoggingUncaughtExceptionHandlerTest.java

/*
 * 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 gobblin.util;

import org.mockito.Mockito;
import org.slf4j.Logger;
import org.testng.annotations.Test;

import com.google.common.base.Optional;


/**
 * Unit tests for {@link LoggingUncaughtExceptionHandler}.
 *
 * @author Yinan Li
 */
@Test(groups = {"gobblin.util"})
public class LoggingUncaughtExceptionHandlerTest {

  @Test(expectedExceptions = RuntimeException.class)
  public void testUncaughtException() {
    Logger logger = Mockito.mock(Logger.class);

    Thread thread = new Thread();
    thread.setName("foo");
    RuntimeException runtimeException = new RuntimeException();
    String errorMessage = String.format("Thread %s threw an uncaught exception: %s", thread, runtimeException);
    Mockito.doThrow(runtimeException).when(logger).error(errorMessage, runtimeException);

    Thread.UncaughtExceptionHandler uncaughtExceptionHandler = new LoggingUncaughtExceptionHandler(Optional.of(logger));
    uncaughtExceptionHandler.uncaughtException(thread, runtimeException);
  }
}