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package org.glassfish.jersey.internal.util;
import java.lang.reflect.Method;
import java.security.AccessControlException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import org.junit.Test;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
/**
* {@code ReflectionHelper} unit tests.
*
* @author Pavel Bucek (pavel.bucek at oracle.com)
*/
@SuppressWarnings("unchecked")
public class ReflectionHelperTest {
@SuppressWarnings("UnusedDeclaration")
public static interface I<T> {
}
public static class A<T> implements I<T> {
}
public static class TestNoInterface extends A<byte[]> {
}
public static class TestInterface extends A<byte[]> implements I<byte[]> {
}
/**
* See JERSEY-1598.
*/
@Test
public void getParameterizedClassArgumentsTest() {
ReflectionHelper.DeclaringClassInterfacePair dcip = ReflectionHelper.getClass(TestNoInterface.class, I.class);
Class[] arguments = ReflectionHelper.getParameterizedClassArguments(dcip);
final Class aClass = arguments[0];
dcip = ReflectionHelper.getClass(TestInterface.class, I.class);
arguments = ReflectionHelper.getParameterizedClassArguments(dcip);
assertEquals(aClass, arguments[0]);
}
@Test(expected = AccessControlException.class)
public void securityManagerSetContextClassLoader() throws Exception {
final ClassLoader loader = ReflectionHelper.class.getClassLoader();
Thread.currentThread().setContextClassLoader(loader);
fail("It should not be possible to set context class loader from unprivileged block");
}
@Test(expected = AccessControlException.class)
public void securityManagerSetContextClassLoaderPA() throws Exception {
final ClassLoader loader = ReflectionHelper.class.getClassLoader();
ReflectionHelper.setContextClassLoaderPA(loader).run();
fail("It should not be possible to set context class loader from unprivileged block even via Jersey ReflectionHelper");
}
@Test(expected = AccessControlException.class)
public void securityManagerSetContextClassLoaderInDoPrivileged() throws Exception {
final ClassLoader loader = ReflectionHelper.class.getClassLoader();
AccessController.doPrivileged(ReflectionHelper.setContextClassLoaderPA(loader));
fail("It should not be possible to set context class loader even from privileged block via Jersey ReflectionHelper "
+ "utility");
}
public static class FromStringClass {
private final String value;
public FromStringClass(final String value) {
this.value = value;
}
public static FromStringClass valueOf(final String value) {
return new FromStringClass(value);
}
public static FromStringClass fromString(final String value) {
return new FromStringClass(value);
}
}
public static class InvalidFromStringClass {
private final String value;
public InvalidFromStringClass(final String value) {
this.value = value;
}
public static Boolean valueOf(final String value) {
throw new AssertionError("Should not be invoked");
}
public static Boolean fromString(final String value) {
throw new AssertionError("Should not be invoked");
}
}
/**
* Reproducer for JERSEY-2801.
*/
@Test
public void testGetValueOfStringMethod() throws Exception {
final PrivilegedAction<Method> methodPA = ReflectionHelper.getValueOfStringMethodPA(FromStringClass.class);
final FromStringClass value = (FromStringClass) methodPA.run().invoke(null, "value");
assertThat("Incorrect instance of FromStringClass created.", value.value, is("value"));
}
/**
* Negative reproducer for JERSEY-2801.
*/
@Test
public void testGetValueOfStringMethodNegative() throws Exception {
final PrivilegedAction<Method> methodPA = ReflectionHelper.getValueOfStringMethodPA(InvalidFromStringClass.class);
assertThat("Invalid valueOf method found.", methodPA.run(), nullValue());
}
/**
* Reproducer for JERSEY-2801.
*/
@Test
public void testGetFromStringStringMethod() throws Exception {
final PrivilegedAction<Method> methodPA = ReflectionHelper.getFromStringStringMethodPA(FromStringClass.class);
final FromStringClass value = (FromStringClass) methodPA.run().invoke(null, "value");
assertThat("Incorrect instance of FromStringClass created.", value.value, is("value"));
}
/**
* Negative reproducer for JERSEY-2801.
*/
@Test
public void testGetFromStringStringMethodNegative() throws Exception {
final PrivilegedAction<Method> methodPA = ReflectionHelper.getFromStringStringMethodPA(InvalidFromStringClass.class);
assertThat("Invalid valueOf method found.", methodPA.run(), nullValue());
}
}