/**
* Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite 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 3.0 of the License, or
* (at your option) any later version.
*
* EvoSuite 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
*/
package org.evosuite.testcase.jee;
import org.evosuite.runtime.util.Inputs;
import javax.servlet.http.HttpServlet;
import java.util.*;
/**
* In some cases, there are classes we want to instantiate only once, eg an HTTP Servlet,
* where having more than one of it would make no sense from a unit testing point of view.
* Note, this is independent on whether it is the CUT or not.
*
* Created by Andrea Arcuri on 29/06/15.
*/
public class InstanceOnlyOnce {
private static final Set<Class<?>> classes = Collections.unmodifiableSet(
new HashSet<Class<?>>(){{
add(HttpServlet.class);
}}
);
public static boolean canInstantiateOnlyOnce(Class<?> klass) throws IllegalArgumentException{
Inputs.checkNull(klass);
for(Class<?> c : classes) {
if(c.isAssignableFrom(klass)){
return true;
}
}
return false;
}
}