/*
 * Copyright 2005-2011 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.xmlrouter.impl;

import static junit.framework.Assert.*;
import static org.mockito.Mockito.*;

import java.util.concurrent.atomic.AtomicLong;

import org.junit.Before;
import org.junit.Test;
import org.wamblee.xmlrouter.common.Id;
import org.wamblee.xmlrouter.config.Identifiable;

public class ConfigImplTest {

    private static final String CONFIG_TYPE = "transformation";

    private static interface MyType extends Identifiable<MyType> {

    }

    private static class MyTypeWrapper implements MyType {
        private MyType type;

        public MyTypeWrapper(MyType aType) {
            type = aType;
        }

        public MyType getType() {
            return type;
        }

        @Override
        public Id getId() {
            return type.getId();
        }
    }

    public static final class MyTypeConfig extends ConfigImpl<MyType> {
        public MyTypeConfig(String aId) {
            super(MyType.class, aId);
        }

        public MyTypeConfig(MyTypeConfig aConfig) {
            super(aConfig);
        }

        @Override
        public MyType wrap(MyType aT) {
            return new MyTypeWrapper(aT);
        }
    }

    private AtomicLong sequence;
    private MyTypeConfig config;

    @Before
    public void setUp() {
        sequence = new AtomicLong(1L);
        config = new MyTypeConfig(CONFIG_TYPE);
    }

    @Test
    public void testAdd() {
        MyType type1 = mock(MyType.class);
        when(type1.getId()).thenReturn(new Id("type1"));

        config.add(type1);

        assertEquals(1, config.values().size());
        MyType firstValue = config.values().iterator().next();

        assertTrue(firstValue instanceof MyTypeWrapper);
        assertSame(type1, ((MyTypeWrapper) firstValue).getType());
        assertEquals(type1.getId().getId(), firstValue.getId().getId());

        // add another one.
        MyType type2 = mock(MyType.class);
        when(type2.getId()).thenReturn(new Id("type2"));
        config.add(type2);

        assertEquals(2, config.values().size());
    }

    @Test
    public void testRemove() {
        MyType type1 = mock(MyType.class);
        when(type1.getId()).thenReturn(new Id("type1"));

        config.add(type1);

        assertEquals(1, config.values().size());

        assertTrue(config.remove(new Id("type1")));
        assertTrue(config.values().isEmpty());
    }

    @Test(expected = UnsupportedOperationException.class)
    public void testUnmodifiable() {
        config.values().add(mock(MyType.class));
    }

    @Test
    public void testEquals() {

        Config<MyType> config1 = new MyTypeConfig(CONFIG_TYPE);
        assertFalse(config1.equals(null));
        assertFalse(config1.equals("hello"));
        Config<MyType> config2 = new MyTypeConfig(CONFIG_TYPE);

        assertEquals(config1, config2);
        assertEquals(config1.hashCode(), config2.hashCode());

        MyType type1 = mock(MyType.class);
        when(type1.getId()).thenReturn(new Id("type1"));

        config1.add(type1);
        assertFalse(config1.equals(config2));

        MyType type2 = mock(MyType.class);
        when(type2.getId()).thenReturn(new Id("type1"));

        config2.add(type2);
        assertEquals(config1, config2);
        assertEquals(config1.hashCode(), config2.hashCode());

        assertTrue(config2.remove(type2.getId()));
        assertFalse(config1.equals(config2));
    }

    @Test
    public void testCopy() {
        testAdd();
        assertEquals(2, config.values().size());
        MyTypeConfig copy = new MyTypeConfig(config);
        assertEquals(config.getPrefix(), copy.getPrefix());
        assertEquals(config, copy);

        // verify the copy is not shallow
        assertTrue(config.remove(new Id<MyType>("type1")));
        assertEquals(1, config.values().size());
        assertFalse(config.equals(copy));
    }
}