uk.org.thegatekeeper.sa.booking.BookingServiceTest.java Source code

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Here is the source code for uk.org.thegatekeeper.sa.booking.BookingServiceTest.java

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/**
 * Copyright 2014 Andy Godwin
 *
 * 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 uk.org.thegatekeeper.sa.booking;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import uk.org.thegatekeeper.Gate;
import uk.org.thegatekeeper.aop.AopGateController;
import uk.org.thegatekeeper.booking.dao.SeatAlreadyBookedException;
import uk.org.thegatekeeper.booking.model.Seat;
import uk.org.thegatekeeper.booking.service.BookingService;
import uk.org.thegatekeeper.booking.service.PaymentService;

import javax.inject.Inject;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "/booking-context.xml", "/booking-test-context.xml" })
public class BookingServiceTest {

    @Inject
    private BookingService bookingService;

    @Inject
    private AopGateController gateController;

    @Test
    public void checkConcurrentBookingsForTheSameSeatUsingGates() throws Exception {
        Gate gate = gateController.stopFirstThread().inClass(PaymentService.class).beforeMethod("pay").build();

        final List<Throwable> exceptions = new ArrayList<>();
        final Seat seat = new Seat(4, 12);

        Thread fred = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    bookingService.book(seat);
                } catch (Throwable t) {
                    exceptions.add(t);
                }
            }
        });
        fred.start();
        gate.waitFor(2, TimeUnit.SECONDS);
        assertTrue(bookingService.book(seat));
        gate.open();
        fred.join();
        assertEquals(1, exceptions.size());
        assertTrue(exceptions.get(0) instanceof SeatAlreadyBookedException);
    }
}