8000 interfaces-to-funs.0 : Baseline · test-driven-development/code@165b104 · GitHub
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Duncan McGregordmcg
Duncan McGregor
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dmcg
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interfaces-to-funs.0 : Baseline
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‎build.gradle

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@@ -25,6 +25,7 @@ dependencies {
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testImplementation "org.junit.jupiter:junit-jupiter-params:5.4.2"
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testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:5.5.2"
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testRuntimeOnly "org.junit.platform:junit-platform-launcher:1.4.2"
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testImplementation "org.mockito:mockito-core:2.+"
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}
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tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile) {

‎src/main/java/travelator/Id.java

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package travelator;
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import java.util.Objects;
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import java.util.UUID;
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public class Id<T> {
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private final String raw;
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private Id(String raw) {
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this.raw = raw;
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}
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public static <T> Id<T> of(String raw) {
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return new Id<T>(raw);
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}
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public static <T> String raw(Id<T> id) {
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return id.raw;
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}
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public static <T> Id<T> mint() {
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return Id.of(UUID.randomUUID().toString());
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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Id<?> id = (Id<?>) o;
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return raw.equals(id.raw);
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}
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@Override
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public int hashCode() {
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return Objects.hash(raw);
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}
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@Override
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public String toString() {
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return raw;
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}
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}

‎src/main/java/travelator/destinations/FeaturedDestination.kt

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package travelator.destinations
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import travelator.domain.Location
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data class FeaturedDestination(
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val name: String,
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val location: Location
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)

‎src/main/java/travelator/destinations/FeaturedDestinationData.java

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package travelator.destinations;
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public class FeaturedDestinationData {
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}

‎src/main/java/travelator/destinations/FeaturedDestinations.java

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package travelator.destinations;
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import travelator.domain.Location;
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import java.util.List;
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public interface FeaturedDestinations {
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List<FeaturedDestination> findCloseTo(Location location);
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FeaturedDestination findClosest(Location location);
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FeaturedDestination add(FeaturedDestinationData destination);
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void remove(FeaturedDestination destination);
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void update(FeaturedDestination destination);
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}

‎src/main/java/travelator/domain/DistanceCalculator.kt

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package travelator.domain
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interface DistanceCalculator {
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fun distanceInMetersBetween(
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start: Location,
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end: Location
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): Int
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fun travelTimeInSecondsBetween(
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start: Location,
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end: Location
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): Int
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}

‎src/main/java/travelator/domain/Itinerary.kt

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package travelator.domain
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class Itinerary {
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val locations: List<Location> = TODO()
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}

‎src/main/java/travelator/domain/Location.java

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package travelator.domain;
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import travelator.Id;
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import java.util.Objects;
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public class Location {
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private final Id<Location> id;
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private final String localName;
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private final String userReadableName;
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public Location(Id<Location> id, String localName, String userReadableName) {
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this.id = id;
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this.localName = localName;
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this.userReadableName = userReadableName;
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}
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public Id<Location> getId() {
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return id;
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}
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public String getLocalName() {
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return localName;
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}
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public String getUserReadableName() {
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return userReadableName;
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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Location location = (Location) o;
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return id.equals(location.id) &&
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localName.equals(location.localName) &&
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userReadableName.equals(location.userReadableName);
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}
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@Override
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public int hashCode() {
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return Objects.hash(id, localName, userReadableName);
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}
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@Override
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public String toString() {
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return "Location(" + id + ": " + userReadableName + ")";
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}
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}

‎src/main/java/travelator/recommendations/FeaturedDestinationSuggestion.kt

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package travelator.recommendations
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import travelator.destinations.FeaturedDestination
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import travelator.domain.Location
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data class FeaturedDestinationSuggestion(
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val routeLocation: Location,
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val suggestion: FeaturedDestination,
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val distanceMeters: Int
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)

‎src/main/java/travelator/recommendations/Recommendations.java

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package travelator.recommendations;
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import travelator.destinations.FeaturedDestinations;
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import travelator.domain.DistanceCalculator;
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import travelator.domain.Location;
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import java.util.Comparator;
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import java.util.List;
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import java.util.Set;
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import java.util.stream.Stream;
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import static java.util.Comparator.comparing;
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import static java.util.stream.Collectors.groupingBy;
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import static java.util.stream.Collectors.toList;
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public class Recommendations {
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private final FeaturedDestinations featuredDestinations;
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private final DistanceCalculator distanceCalculator;
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public Recommendations(
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FeaturedDestinations featuredDestinations,
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DistanceCalculator distanceCalculator
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) {
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this.featuredDestinations = featuredDestinations;
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this.distanceCalculator = distanceCalculator;
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}
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private final Comparator<FeaturedDestinationSuggestion> distanceComparator =
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comparing(FeaturedDestinationSuggestion::getDistanceMeters);
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public List<FeaturedDestinationSuggestion> recommendationsFor(
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Set<Location> journey
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) {
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var results = removeDuplicates(
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journey.stream()
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.flatMap(location ->
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recommendationsFor(location).stream()
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)
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);
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results.sort(distanceComparator);
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return results;
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}
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public List<FeaturedDestinationSuggestion> recommendationsFor(
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Location location
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) {
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return featuredDestinations
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.findCloseTo(location) // <1>
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.stream()
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.map(featuredDestination ->
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new FeaturedDestinationSuggestion(
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location,
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featuredDestination,
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distanceCalculator.distanceInMetersBetween( // <2>
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location,
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featuredDestination.getLocation()
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)
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)
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).collect(toList());
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}
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private List<FeaturedDestinationSuggestion> removeDuplicates(
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Stream<FeaturedDestinationSuggestion> suggestions
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) {
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return suggestions
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.collect(
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groupingBy(FeaturedDestinationSuggestion::getSuggestion)
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).values().stream()
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.map(this::closestToJourneyLocation)
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.collect(toList());
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}
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private FeaturedDestinationSuggestion closestToJourneyLocation(
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List<FeaturedDestinationSuggestion> suggestionsWithSameDestination
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) {
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return suggestionsWithSameDestination.stream().min(distanceComparator).orElseThrow();
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}
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}

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