/*
 * Copyright 2005-2010 the original author or authors.
 * 
 * Licensed 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.wamblee.inject;

import static junit.framework.Assert.*;

import org.junit.Test;

public class InjectorCacheTest {

    private static class MyInjector implements Injector {
        private String classname;

        public MyInjector(String aClassname) {
            classname = aClassname;
        }

        @Override
        public void inject(Object aComponent) {
            throw new RuntimeException("not implemented");
        }

        public String getClassname() {
            return classname;
        }
    }

    @Test
    public void testCache() {
        InjectorFactory factory = new InjectorFactory() {

            @Override
            public Injector create(Class aClass) {
                return new MyInjector(aClass.getName());
            }
        };
        InjectorCache cache = new InjectorCache(factory);
        // Unrealistic exmaple, but sufficient for test.

        Injector injector = cache.getInjector(String.class);
        assertEquals(String.class.getName(), ((MyInjector) injector)
            .getClassname());

        Injector injector2 = cache.getInjector(String.class);
        assertSame(injector, injector2);

        // verify we get another one for another class.
        Injector injector3 = cache.getInjector(Long.class);
        assertEquals(Long.class.getName(), ((MyInjector) injector3)
            .getClassname());

    }
}