/
LazyLauncher.java
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/
LazyLauncher.java
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package org.apache.maven.surefire.junitplatform;
/*
* 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.apache.maven.surefire.api.util.ReflectionUtils;
import org.junit.platform.launcher.Launcher;
import org.junit.platform.launcher.LauncherDiscoveryRequest;
import org.junit.platform.launcher.TestExecutionListener;
import org.junit.platform.launcher.TestPlan;
import org.junit.platform.launcher.core.LauncherFactory;
/**
* Launcher proxy which delays the most possible the initialization of the real JUnit
* Launcher in order to avoid stream/stdout corruption due to early logging.
*/
class LazyLauncher implements Launcher, AutoCloseable
{
private AutoCloseable launcherSession;
private Launcher launcher;
@Override
public void registerTestExecutionListeners( TestExecutionListener... testExecutionListeners )
{
launcher().registerTestExecutionListeners( testExecutionListeners );
}
@Override
public TestPlan discover( LauncherDiscoveryRequest launcherDiscoveryRequest )
{
return launcher().discover( launcherDiscoveryRequest );
}
@Override
public void execute( LauncherDiscoveryRequest launcherDiscoveryRequest,
TestExecutionListener... testExecutionListeners )
{
launcher().execute( launcherDiscoveryRequest, testExecutionListeners );
}
private Launcher launcher()
{
if ( launcher == null )
{
try
{
Class<?> sessionClass = Class.forName( "org.junit.platform.launcher.LauncherSession" );
launcherSession = ReflectionUtils.invokeGetter( LauncherFactory.class, null, "openSession" );
launcher = ReflectionUtils.invokeGetter( sessionClass, launcherSession, "getLauncher" );
}
catch ( ClassNotFoundException e )
{
launcher = LauncherFactory.create();
}
}
return launcher;
}
@Override
public void close() throws Exception
{
if ( launcherSession != null )
{
launcherSession.close();
launcherSession = null;
}
launcher = null;
}
}