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/*
* Copyright 2015-2023 the original author or authors.
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v2.0 which
* accompanies this distribution and is available at
*
* https://www.eclipse.org/legal/epl-v20.html
*/
package example;
// tag::user_guide[]
import java.io.IOException;
import java.io.UncheckedIOException;
import java.net.URI;
import java.net.URL;
import java.net.URLClassLoader;
import org.junit.platform.launcher.LauncherInterceptor;
public class CustomLauncherInterceptor implements LauncherInterceptor {
private final URLClassLoader customClassLoader;
public CustomLauncherInterceptor() throws Exception {
ClassLoader parent = Thread.currentThread().getContextClassLoader();
customClassLoader = new URLClassLoader(new URL[] { URI.create("some.jar").toURL() }, parent);
}
@Override
public <T> T intercept(Invocation<T> invocation) {
Thread currentThread = Thread.currentThread();
ClassLoader originalClassLoader = currentThread.getContextClassLoader();
currentThread.setContextClassLoader(customClassLoader);
try {
return invocation.proceed();
}
finally {
currentThread.setContextClassLoader(originalClassLoader);
}
}
@Override
public void close() {
try {
customClassLoader.close();
}
catch (IOException e) {
throw new UncheckedIOException("Failed to close custom class loader", e);
}
}
}
// end::user_guide[]
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