/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.flink.training.exercises.ridesandfares;

import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.training.exercises.common.datatypes.TaxiFare;
import org.apache.flink.training.exercises.common.datatypes.TaxiRide;
import org.apache.flink.training.exercises.testing.TaxiRideTestBase;
import org.apache.flink.training.solutions.ridesandfares.RidesAndFaresSolution;

import org.joda.time.DateTime;
import org.junit.Test;

import java.util.Arrays;
import java.util.List;

import static org.hamcrest.collection.IsIterableContainingInAnyOrder.containsInAnyOrder;
import static org.junit.Assert.assertThat;

public class RidesAndFaresTest extends TaxiRideTestBase<Tuple2<TaxiRide, TaxiFare>> {

	static Testable javaExercise = () -> RidesAndFaresExercise.main(new String[]{});


	final TaxiRide ride1 = testRide(1);
	final TaxiRide ride2 = testRide(2);
	final TaxiFare fare1 = testFare(1);
	final TaxiFare fare2 = testFare(2);

	@Test
	public void testInOrder() throws Exception {
		TestRideSource rides = new TestRideSource(ride1, ride2);
		TestFareSource fares = new TestFareSource(fare1, fare2);

		List<Tuple2<TaxiRide, TaxiFare>> expected = Arrays.asList(
				new Tuple2<>(ride1, fare1),
				new Tuple2<>(ride2, fare2));

		assertThat("Join results don't match", results(rides, fares), containsInAnyOrder(expected.toArray()));
	}

	@Test
	public void testOutOfOrder() throws Exception {
		TestRideSource rides = new TestRideSource(ride1, ride2);
		TestFareSource fares = new TestFareSource(fare2, fare1);

		List<Tuple2<TaxiRide, TaxiFare>> expected = Arrays.asList(
				new Tuple2<>(ride1, fare1),
				new Tuple2<>(ride2, fare2));

		assertThat("Join results don't match", results(rides, fares), containsInAnyOrder(expected.toArray()));
	}

	private TaxiRide testRide(long rideId) {
		return new TaxiRide(rideId, true, new DateTime(0), new DateTime(0),
				0F, 0F, 0F, 0F, (short) 1, 0, rideId);
	}

	private TaxiFare testFare(long rideId) {
		return new TaxiFare(rideId, 0, rideId, new DateTime(0), "", 0F, 0F, 0F);
	}

	protected List<?> results(TestRideSource rides, TestFareSource fares) throws Exception {
		Testable javaSolution = () -> RidesAndFaresSolution.main(new String[]{});
		return runApp(rides, fares, new TestSink<>(), javaExercise, javaSolution);
	}

}