/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.deltaspike.core.util;

import junit.framework.Assert;
import org.junit.Test;

import java.lang.reflect.Method;
import java.util.Collection;
import java.util.List;

public class ClassUtilsTest
{
    @Test
    public void shouldNotRetrieveMethodBasedOnSameReturnType() throws Exception
    {
        Method m = InnerTwo.class.getMethod("getCollection");
        Method method = ClassUtils.extractPossiblyGenericMethod(InnerOne.class, m);
        Assert.assertEquals(InnerOne.class.getMethod("getCollection"), method);
    }

    @Test
    public void shouldRetrieveMethodBasedOnCastableType() throws Exception
    {
        Method m = InnerThree.class.getMethod("getCollection");
        Method method = ClassUtils.extractPossiblyGenericMethod(InnerOne.class, m);
        Assert.assertEquals(InnerOne.class.getMethod("getCollection"), method);
    }

    private static class InnerOne {
        public List<Integer> getCollection() {
            return null;
        }
    }

    private static class InnerTwo {
        public Collection<Integer> getCollection() {
            return null;
        }
    }

    private static class InnerThree {
        public Object getCollection() {
            return null;
        }
    }
}