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/*
* Copyright (C) 2019 Nail Samatov <sanail@yandex.ru> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.junit;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.Paths;
import org.junit.runners.BlockJUnit4ClassRunner;
import org.junit.runners.model.InitializationError;
/**
* This class is used when it's required to load jgit classes in separate
* classloader for each test class. It can be needed to isolate static field
* initialization between separate tests.
*
* @since 5.5
*/
public class SeparateClassloaderTestRunner extends BlockJUnit4ClassRunner {
/**
* Creates a SeparateClassloaderTestRunner to run {@code klass}.
*
* @param klass
* test class to run.
* @throws InitializationError
* if the test class is malformed or can't be found.
*/
public SeparateClassloaderTestRunner(Class<?> klass)
throws InitializationError {
super(loadNewClass(klass));
}
private static Class<?> loadNewClass(Class<?> klass)
throws InitializationError {
try {
String pathSeparator = System.getProperty("path.separator");
String[] classPathEntries = System.getProperty("java.class.path")
.split(pathSeparator);
URL[] urls = new URL[classPathEntries.length];
for (int i = 0; i < classPathEntries.length; i++) {
urls[i] = Paths.get(classPathEntries[i]).toUri().toURL();
}
ClassLoader testClassLoader = new URLClassLoader(urls) {
@Override
public Class<?> loadClass(String name)
throws ClassNotFoundException {
if (name.startsWith("org.eclipse.jgit.")) {
return super.findClass(name);
}
return super.loadClass(name);
}
};
return Class.forName(klass.getName(), true, testClassLoader);
} catch (ClassNotFoundException | MalformedURLException e) {
throw new InitializationError(e);
}
}
}
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