com.github.rinde.rinsim.pdptw.common.ScenarioTestUtil.java Source code

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Here is the source code for com.github.rinde.rinsim.pdptw.common.ScenarioTestUtil.java

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/*
 * Copyright (C) 2011-2016 Rinde van Lon, iMinds-DistriNet, KU Leuven
 *
 * 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 com.github.rinde.rinsim.pdptw.common;

import static com.google.common.truth.Truth.assertThat;
import static java.util.Arrays.asList;

import java.math.RoundingMode;
import java.util.Collections;

import org.apache.commons.math3.random.MersenneTwister;
import org.apache.commons.math3.random.RandomGenerator;

import com.github.rinde.rinsim.core.model.ModelBuilder;
import com.github.rinde.rinsim.core.model.pdp.DefaultPDPModel;
import com.github.rinde.rinsim.core.model.pdp.Parcel;
import com.github.rinde.rinsim.core.model.pdp.VehicleDTO;
import com.github.rinde.rinsim.core.model.road.RoadModelBuilders;
import com.github.rinde.rinsim.geom.Point;
import com.github.rinde.rinsim.scenario.Scenario;
import com.github.rinde.rinsim.scenario.ScenarioIO;
import com.github.rinde.rinsim.scenario.StopConditions;
import com.github.rinde.rinsim.scenario.TimeOutEvent;
import com.github.rinde.rinsim.util.TimeWindow;
import com.google.common.math.DoubleMath;

/**
 * Utilities for testing {@link Scenario}.
 * @author Rinde van Lon
 */
public class ScenarioTestUtil {

    private ScenarioTestUtil() {
    }

    /**
     * Tests whether the specified scenario can be correctly written to disk, it
     * compares the equality of the specified object with a parsed object and it
     * compares the equality of the serialized string.
     * @param input The scenario to test with IO.
     */
    public static void assertScenarioIO(Scenario input) {
        final String serialized = ScenarioIO.write(input);
        final Scenario parsed = ScenarioIO.read(serialized);
        final String serializedAgain = ScenarioIO.write(parsed);
        System.out.println(serialized);
        assertThat(input).isEqualTo(parsed);
        assertThat(serialized).isEqualTo(serializedAgain);
    }

    /**
     * Creates a random scenario.
     * @param seed The seed to use.
     * @param models Additional models (optional).
     * @return A new random scenario.
     */
    public static Scenario createRandomScenario(long seed, ModelBuilder<?, ?>... models) {
        final int endTime = 3 * 60 * 60 * 1000;
        final Scenario.Builder b = Scenario.builder().addModel(RoadModelBuilders.plane())
                .addModel(DefaultPDPModel.builder()).addModels(asList(models)).addEvents(Collections.nCopies(10,
                        AddVehicleEvent.create(-1, VehicleDTO.builder().startPosition(new Point(5, 5)).build())));

        final RandomGenerator rng = new MersenneTwister(seed);
        for (int i = 0; i < 20; i++) {
            final long announceTime = rng.nextInt(DoubleMath.roundToInt(endTime * .8, RoundingMode.FLOOR));
            b.addEvent(AddParcelEvent.create(Parcel
                    .builder(new Point(rng.nextDouble() * 10, rng.nextDouble() * 10),
                            new Point(rng.nextDouble() * 10, rng.nextDouble() * 10))
                    .orderAnnounceTime(announceTime).pickupTimeWindow(TimeWindow.create(announceTime, endTime))
                    .deliveryTimeWindow(TimeWindow.create(announceTime, endTime)).neededCapacity(0).buildDTO()));
        }

        b.addEvent(TimeOutEvent.create(endTime)).scenarioLength(endTime)
                .setStopCondition(StopConditions.limitedTime(endTime));

        return b.build();
    }
}