/*
 * 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.Matchers.*;
import static org.mockito.Mockito.*;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

import javax.xml.transform.dom.DOMSource;

import org.junit.Before;
import org.junit.Test;
import org.wamblee.xmlrouter.common.Id;
import org.wamblee.xmlrouter.subscribe.Destination;

public class RobustDestinationTest {

    private Destination destination;
    private Destination robust;
    private DOMSource source;

    @Before
    public void setUp() {
        destination = mock(Destination.class);
        robust = new RobustDestination(new Id<Destination>("100"), destination);
        source = mock(DOMSource.class);
    }

    @Test
    public void testNormalFlow() {
        when(destination.getName()).thenReturn("name");
        when(
            destination.chooseFromTargetTypes((Collection<String>) anyObject()))
            .thenReturn(Arrays.asList("x"));

        assertEquals("name", robust.getName());
        assertEquals(Arrays.asList("x"),
            robust.chooseFromTargetTypes(Arrays.asList("x", "y")));
        when(destination.receive(same(source))).thenReturn(true);
        assertTrue(robust.receive(source));
        verify(destination).receive(same(source));

        when(destination.receive(same(source))).thenReturn(false);
        assertFalse(robust.receive(source));

    }

    @Test
    public void testNameReturnsNull() {
        when(destination.getName()).thenReturn(null);
        assertEquals(Constants.UNKNOWN_DESTINATION_NAME.toString(),
            robust.getName());
    }

    @Test
    public void testNameThrowsException() {
        doThrow(new RuntimeException("x")).when(destination).getName();
        assertEquals(Constants.UNKNOWN_DESTINATION_NAME.toString(),
            robust.getName());
    }

    @Test
    public void testChooseFromTargetTypesReturnsNull() {
        when(
            destination.chooseFromTargetTypes((Collection<String>) anyObject()))
            .thenReturn(null);
        assertEquals(Collections.EMPTY_LIST,
            robust.chooseFromTargetTypes(Arrays.asList("x")));
    }

    @Test
    public void testChooseFromTargetTypesThrowsException() {
        doThrow(new RuntimeException("x")).when(destination)
            .chooseFromTargetTypes(anyList());
        assertEquals(Collections.EMPTY_LIST,
            robust.chooseFromTargetTypes(Arrays.asList("x")));
    }

    @Test
    public void testChooseFromTargetTypesReturnsInvalidType() {
        when(
            destination.chooseFromTargetTypes((Collection<String>) anyObject()))
            .thenReturn(Arrays.asList("x", "y"));
        assertEquals(Arrays.asList("y"),
            robust.chooseFromTargetTypes(Arrays.asList("y", "z")));
    }

    @Test
    public void testReceiveThrowsException() {
        doThrow(new RuntimeException("x")).when(destination).receive(
            any(DOMSource.class));
        assertEquals(false, robust.receive(source));
    }
}