package org.apache.maven.plugin.surefire.booterclient.lazytestprovider;
/*
* 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.
*/
import org.junit.Test;
import java.io.IOException;
import java.util.ArrayDeque;
import java.util.Queue;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
import java.util.concurrent.TimeUnit;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;
/**
* Asserts that this stream properly reads bytes from queue.
*
* @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a>
* @since 2.19
*/
public class TestProvidingInputStreamTest
{
@Test
public void closedStreamShouldReturnEndOfStream()
throws IOException
{
Queue<String> commands = new ArrayDeque<String>();
TestProvidingInputStream is = new TestProvidingInputStream( commands );
is.close();
assertThat( is.read(), is( -1 ) );
}
@Test
public void emptyStreamShouldWaitUntilClosed()
throws Exception
{
Queue<String> commands = new ArrayDeque<String>();
final TestProvidingInputStream is = new TestProvidingInputStream( commands );
final Thread streamThread = Thread.currentThread();
FutureTask<Thread.State> futureTask = new FutureTask<Thread.State>( new Callable<Thread.State>()
{
@Override
public Thread.State call()
{
sleep( 1000 );
Thread.State state = streamThread.getState();
is.close();
return state;
}
} );
Thread assertionThread = new Thread( futureTask );
assertionThread.start();
assertThat( is.read(), is( -1 ) );
Thread.State state = futureTask.get();
assertThat( state, is( Thread.State.WAITING ) );
}
@Test
public void finishedTestsetShouldNotBlock()
throws IOException
{
Queue<String> commands = new ArrayDeque<String>();
final TestProvidingInputStream is = new TestProvidingInputStream( commands );
is.testSetFinished();
new Thread( new Runnable()
{
@Override
public void run()
{
is.provideNewTest();
}
} ).start();
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 1 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
is.close();
assertThat( is.read(), is( -1 ) );
}
@Test
public void shouldReadTest()
throws IOException
{
Queue<String> commands = new ArrayDeque<String>();
commands.add( "Test" );
final TestProvidingInputStream is = new TestProvidingInputStream( commands );
new Thread( new Runnable()
{
@Override
public void run()
{
is.provideNewTest();
}
} ).start();
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 0 ) );
assertThat( is.read(), is( 4 ) );
assertThat( is.read(), is( (int) 'T' ) );
assertThat( is.read(), is( (int) 'e' ) );
assertThat( is.read(), is( (int) 's' ) );
assertThat( is.read(), is( (int) 't' ) );
}
private static void sleep( long millis )
{
try
{
TimeUnit.MILLISECONDS.sleep( millis );
}
catch ( InterruptedException e )
{
// do nothing
}
}
}