/*
 * Copyright (c) 2010-2012. Axon Framework
 *
 * 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.axonframework.test.utils;

import org.axonframework.commandhandling.CommandCallback;
import org.axonframework.commandhandling.CommandMessage;
import org.axonframework.commandhandling.GenericCommandMessage;
import org.axonframework.messaging.MessageHandler;
import org.junit.Before;
import org.junit.Test;

import java.util.List;

import static org.junit.Assert.*;

/**
 * @author Allard Buijze
 */
public class RecordingCommandBusTest {

    private RecordingCommandBus testSubject;

    @Before
    public void setUp() throws Exception {
        testSubject = new RecordingCommandBus();
    }

    @Test
    public void testPublishCommand() {
        testSubject.dispatch(GenericCommandMessage.asCommandMessage("First"));
        testSubject.dispatch(GenericCommandMessage.asCommandMessage("Second"), new CommandCallback<Object, Object>() {
            @Override
            public void onSuccess(CommandMessage<?> commandMessage, Object result) {
                assertNull("Expected default callback behavior to invoke onSuccess(null)", result);
            }

            @Override
            public void onFailure(CommandMessage<?> commandMessage, Throwable cause) {
                fail("Didn't expect callack to be invoked");
            }
        });
        //noinspection AssertEqualsBetweenInconvertibleTypes
        List<CommandMessage<?>> actual = testSubject.getDispatchedCommands();
        assertEquals(2, actual.size());
        assertEquals("First", actual.get(0).getPayload());
        assertEquals("Second", actual.get(1).getPayload());
    }

    @Test
    public void testPublishCommandWithCallbackBehavior() {
        testSubject.setCallbackBehavior((commandPayload, commandMetaData) -> "callbackResult");
        testSubject.dispatch(GenericCommandMessage.asCommandMessage("First"));
        testSubject.dispatch(GenericCommandMessage.asCommandMessage("Second"), new CommandCallback<Object, Object>() {
            @Override
            public void onSuccess(CommandMessage<?> commandMessage, Object result) {
                assertEquals("callbackResult", result);
            }

            @Override
            public void onFailure(CommandMessage<?> commandMessage, Throwable cause) {
                fail("Didn't expect callack to be invoked");
            }
        });
        //noinspection AssertEqualsBetweenInconvertibleTypes
        List<CommandMessage<?>> actual = testSubject.getDispatchedCommands();
        assertEquals(2, actual.size());
        assertEquals("First", actual.get(0).getPayload());
        assertEquals("Second", actual.get(1).getPayload());
    }

    @Test
    public void testRegisterHandler() {
        MessageHandler<? super CommandMessage<?>> handler = command -> {
            fail("Did not expect handler to be invoked");
            return null;
        };
        testSubject.subscribe(String.class.getName(), handler);
        assertTrue(testSubject.isSubscribed(handler));
        assertTrue(testSubject.isSubscribed(String.class.getName(), handler));
    }
}