/*
 * 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.wicket.model;

import org.junit.Before;
import org.junit.Test;
import org.wamblee.persistence.Detachable;

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

public class DetachableEntityTest {

    public static class X {

    }

    private X initialValue;
    private Detachable<X> detachable;
    private DetachableEntity<X> entity;

    @Before
    public void setUp() {
        initialValue = mock(X.class);
        detachable = mock(Detachable.class);
        when(detachable.get()).thenReturn(initialValue);
        entity = new DetachableEntity<X>(detachable);
    }

    @Test
    public void testGetObject() {
        X x = new X();
        reset(detachable);
        when(detachable.get()).thenReturn(x);
        X value = entity.getObject();
        // we did not detach it yet so the old value should be returned.
        assertSame(initialValue, value);
        verifyNoMoreInteractions(detachable);
    }

    @Test
    public void testOnDetachReattach() {
        X x = new X();
        when(detachable.get()).thenReturn(x);

        entity.detach();
        verify(detachable).detach();

        reset(detachable);
        when(detachable.get()).thenReturn(x);

        X y = entity.getObject();
        assertSame(x, y);
        verify(detachable).get();
    }

    @Test(expected = UnsupportedOperationException.class)
    public void testSetObject() {
        X x = new X();
        entity.setObject(x);
    }
}