/*
* Copyright 2012 LinkedIn, Inc
*
* 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.
*/
package com.linkedin.parseq;
import com.linkedin.parseq.promise.Promise;
import com.linkedin.parseq.promise.Promises;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.spi.LoggerRepository;
import static com.linkedin.parseq.Tasks.action;
import static org.testng.AssertJUnit.assertTrue;
import static org.testng.AssertJUnit.fail;
/**
* @author Chris Pettitt (cpettitt@linkedin.com)
*/
public class TestUtil
{
private TestUtil() {}
public static Task<?> noop()
{
return action("noop", new Runnable()
{
@Override
public void run()
{
}
});
}
public static <T> Task<T> errorTask(final String name, final Exception error)
{
return new BaseTask<T>(name)
{
@Override
public Promise<T> run(final Context context) throws Exception
{
throw error;
}
};
}
public static void assertThrows(final Class<? extends Exception> exceptionClass,
final ThrowingRunnable runnable)
{
try
{
runnable.run();
}
catch (Exception e)
{
assertTrue("Expected exception: " + exceptionClass.getName() + " but got: " + e.getClass().getName(),
exceptionClass.isInstance(e));
return;
}
fail("Should have thrown " + exceptionClass.getName());
}
public static <T> Task<T> value(final T value)
{
return value("value", value);
}
public static <T> Task<T> value(final String name, final T value)
{
return new ValueTask<T>(name, value);
}
public static void withDisabledLogging(final Runnable r)
{
// Note: this assumes we're using Log4J and needs to be fixed up if this changes.
final LoggerRepository loggerRepo = LogManager.getLoggerRepository();
final Level oldLevel = loggerRepo.getThreshold();
loggerRepo.setThreshold(Level.OFF);
try
{
r.run();
}
finally
{
loggerRepo.setThreshold(oldLevel);
}
}
private static class ValueTask<T> extends BaseTask<T>
{
private final T _value;
public ValueTask(final String name, final T value)
{
super(name);
_value = value;
}
@Override
protected Promise<? extends T> run(final Context context) throws Exception
{
return Promises.value(_value);
}
}
}