/*
* SonarQube
* Copyright (C) 2009-2017 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.test;
import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;
/**
* Utilities for unit tests
*
* @since 2.2
*/
public final class TestUtils {
private TestUtils() {
}
/**
* Asserts that all constructors are private, usually for helper classes with
* only static methods. If a constructor does not have any parameters, then
* it's instantiated.
*/
public static boolean hasOnlyPrivateConstructors(Class clazz) {
boolean ok = true;
for (Constructor constructor : clazz.getDeclaredConstructors()) {
ok &= Modifier.isPrivate(constructor.getModifiers());
if (constructor.getParameterTypes().length == 0) {
constructor.setAccessible(true);
try {
constructor.newInstance();
} catch (Exception e) {
throw new IllegalStateException(String.format("Fail to instantiate %s", clazz), e);
}
}
}
return ok;
}
}