org.junitpioneer.jupiter.params.PioneerAnnotationUtils Maven / Gradle / Ivy
/*
* Copyright 2015-2020 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
*
* http://www.eclipse.org/legal/epl-v20.html
*/
package org.junitpioneer.jupiter.params;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Optional;
import org.junit.jupiter.api.extension.ExtensionContext;
/**
* Copy of {@code org.junitpioneer.jupiter.PioneerAnnotationUtils}.
*
* This copy is necessary to keep all utils package-visible. In order not to duplicate
* a lot of code, which adds the challenge to keep the implementations tested and in sync,
* we use reflection to access the package-visible original implementation.
*/
class PioneerAnnotationUtils {
private static final Class PIONEER_ANNOTATION_UTILS;
private static final Method FIND_CLOSEST_ENCLOSING_ANNOTATION;
static {
try {
PIONEER_ANNOTATION_UTILS = Class.forName("org.junitpioneer.jupiter.PioneerAnnotationUtils");
FIND_CLOSEST_ENCLOSING_ANNOTATION = PIONEER_ANNOTATION_UTILS
.getMethod("findClosestEnclosingAnnotation", ExtensionContext.class, Class.class);
FIND_CLOSEST_ENCLOSING_ANNOTATION.setAccessible(true);
}
catch (ReflectiveOperationException ex) {
throw new RuntimeException("Pioneer could not initialize itself.", ex);
}
}
private PioneerAnnotationUtils() {
// private constructor to prevent instantiation of utility class
}
@SuppressWarnings("unchecked")
public static Optional findClosestEnclosingAnnotation(ExtensionContext context,
Class annotationType) {
try {
return (Optional) FIND_CLOSEST_ENCLOSING_ANNOTATION.invoke(null, context, annotationType);
}
catch (ReflectiveOperationException ex) {
throw new RuntimeException("Internal Pioneer error.", ex);
}
}
}