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TatsuyaRyujinEvan Philakhong
TatsuyaRyujin
and
Evan Philakhong
authored
feat: implements Formula1Car.java Class & Tests (#500)
* feat: adds Formula1Car methods * refactor: immplements lombok annotations * feat: adds Track.java class * feat: adds Formula1Car methods * feat: adds Weather.java * feat: adds rainStrategy() method in Formula1Car Class * feat: adds NoSponsorsException.java * feat: implements NoSponsorsException * feat: adds Track.java constuctors * refactor: ./gradle spotlessApply * feat: adds Formula1Car.java tests * feat: adds printSponsors() tests * refactor: adds JavaDoc style * fix: run ./gradleW spotlessApply --------- Co-authored-by: Evan Philakhong <[email protected]>
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‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/evanphilakhong/Formula1Car.java

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package com.codedifferently.lesson16.evanphilakhong;
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import lombok.Getter;
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import lombok.Setter;
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@Getter
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@Setter
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public class Formula1Car {
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private Track track;
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private Team team;
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private String[] sponsors;
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private String driverName;
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private int driverNum;
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private int position;
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private TyreCompound currTyre;
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private boolean drs;
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/**
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* Default Constructor for a Formula1Car with no team, empty sponsors array, empty driver name,
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* driver number 0, no tyre compound, and DRS is disabled by default
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*/
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public Formula1Car() {
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this.team = null;
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this.sponsors = new String[0];
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this.driverName = "";
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this.driverNum = 0;
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this.currTyre = null;
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this.drs = false;
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}
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/**
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* @param team the tean that this Formula1Car belongs
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* @param sponsors array of sponsor names accosicated with this Formula1Car
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* @param driverName the name of the driver of this Formula1Car
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* @param driverNum the drivers number for the Formula1Car
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* @param position drivers current racing position on the grid
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* @param currTyre current TyreCompound fitted on this Formula1Car
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* @see Team
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* @see TyreCompound
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*/
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public Formula1Car(
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Team team,
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String[] sponsors,
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String driverName,
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int driverNum,
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int position,
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TyreCompound currTyre) {
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this.team = team;
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this.sponsors = sponsors;
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this.driverName = driverName;
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this.driverNum = driverNum;
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this.position = position;
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this.currTyre = currTyre;
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this.drs = false;
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}
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/**
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* Displays a header line then, Prints a list of sponsors to the console.
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*
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* @throws NoSponsorsException if there are no sponsors associated with this Formula1Car
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* @see NoSponsorsException
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*/
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public void printSponsors() throws NoSponsorsException {
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if (sponsors.length == 0) {
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throw new NoSponsorsException(team + " has no Sponsors");
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} else {
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System.out.println("Here's a list of our Sponsors:");
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for (String sponsor : sponsors) {
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System.out.println(sponsor);
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}
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}
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}
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/**
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* Checks if DRS (Drag Reduction System) is availible to use This method determines DRS
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* availibility based on weather or not your Formula1Car is in the current track's designated DRS
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* zone.
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*
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* @return {@code true} if DRS is availible (track has a DRS zone), {@code false} otherwise
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* @see Track#isDrsZone()
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*/
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public boolean isDrsAvailible() {
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if (track.isDrsZone()) {
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this.drs = true;
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return true;
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}
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return false;
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}
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/**
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* Checks if we need to switch race strategy to account for the rainy weather if the weather is
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* LIGHT_RAIN we change the TyreCompound to INTERMEDIATE if the weather is HEAVY_RAIN we change
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* the TyreCompound to WET
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*
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* @return {@code true} if track.getWeather is LIGHT_RAIN || HEAVY_RAIN {@code false} otherwise
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* @see Track#getWeather()
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*/
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public boolean rainStrategy() {
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if (track.getWeather() == Weather.LIGHT_RAIN) {
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this.currTyre = TyreCompound.INTERMEDIATE;
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return true;
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} else if (track.getWeather() == Weather.HEAVY_RAIN) {
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this.currTyre = TyreCompound.WET;
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return true;
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}
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return false;
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}
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}

‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/evanphilakhong/NoSponsorsException.java

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package com.codedifferently.lesson16.evanphilakhong;
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public class NoSponsorsException extends Exception {
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public NoSponsorsException(String message) {
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super(message);
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}
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}

‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/evanphilakhong/Team.java

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package com.codedifferently.lesson16.evanphilakhong;
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public enum Team {
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ALPINE,
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ASTON_MARTIN,
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FERRARI,
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HASS,
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MCLAREN,
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MERCEDES,
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VCARB,
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RED_BULL,
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SAUBER,
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WILLIAMS
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}

‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/evanphilakhong/Track.java

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package com.codedifferently.lesson16.evanphilakhong;
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import lombok.Getter;
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import lombok.Setter;
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@Getter
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@Setter
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public class Track {
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private String trackName;
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private String trackLocation;
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private int numLaps;
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private double trackLengthInKm;
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private boolean drsZone;
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private Weather weather;
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// constructors
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public Track() {
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this.trackName = "Suzuka Circuit";
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this.trackLocation = "Suzuka, Japan";
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this.numLaps = 53;
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this.trackLengthInKm = 5.807;
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this.drsZone = false;
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this.weather = Weather.CLEAR;
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}
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public Track(
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String trackName,
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String trackLocation,
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int numLaps,
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double trackLengthInKm,
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boolean drsZone,
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Weather weather) {
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this.trackName = trackName;
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this.trackLocation = trackLocation;
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this.numLaps = numLaps;
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this.trackLengthInKm = trackLengthInKm;
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this.drsZone = drsZone;
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this.weather = weather;
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}
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}

‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/evanphilakhong/TyreCompound.java

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package com.codedifferently.lesson16.evanphilakhong;
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enum TyreCompound {
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SOFT,
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MEDIUM,
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HARD,
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INTERMEDIATE,
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WET
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}

‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/evanphilakhong/Weather.java

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package com.codedifferently.lesson16.evanphilakhong;
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public enum Weather {
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CLEAR,
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LIGHT_RAIN,
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HEAVY_RAIN
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}

‎lesson_16/objects/objects_app/src/test/java/com/codedifferently/lesson16/evanphilakhong/Formula1CarTest.java

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package com.codedifferently.lesson16.evanphilakhong;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintStream;
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import org.junit.jupiter.api.AfterEach;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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class Formula1CarTest {
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private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();
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Track track;
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Formula1Car f1Car1;
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Formula1Car f1Car2;
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@BeforeEach
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void setUp() {
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track = new Track();
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String[] f1Car1Sponsors = {"Hp", "Shell", "UniCredit", "IBM", "Puma", "VGW Play"};
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f1Car1 =
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new Formula1Car(Team.FERRARI, f1Car1Sponsors, "Lewis Hamilton", 44, 8, TyreCompound.MEDIUM);
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f1Car1.setTrack(track);
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String[] f1Car2Sponsors = {};
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f1Car2 =
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new Formula1Car(Team.MCLAREN, f1Car2Sponsors, "Lando Norris", 4, 2, TyreCompound.MEDIUM);
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f1Car2.setTrack(track);
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System.setOut(new PrintStream(outContent));
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}
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@AfterEach
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void restoreStreams() {
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System.setOut(System.out);
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}
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@Test
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void testIsDrsAvailibe_returnsTrue() {
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track.setDrsZone(true);
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assertTrue(f1Car1.isDrsAvailible());
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}
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@Test
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void testIsDrsAvailibe_returnsFalse() {
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track.setDrsZone(false);
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assertFalse(f1Car1.isDrsAvailible());
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}
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@Test
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void testRainStrategy_returnsTrue() {
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// checks if tyres change depending on weather conditions
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track.setWeather(Weather.LIGHT_RAIN);
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assertTrue(f1Car1.rainStrategy());
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assertEquals(f1Car1.getCurrTyre(), TyreCompound.INTERMEDIATE);
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track.setWeather(Weather.HEAVY_RAIN);
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assertTrue(f1Car1.rainStrategy());
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assertEquals(f1Car1.getCurrTyre(), TyreCompound.WET);
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}
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@Test
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void testRainStrategy_returnsFalse() {
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// checks the default condition no rain
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assertFalse(f1Car1.rainStrategy());
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}
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@Test
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void testPrintSponsors_withSponsors() throws NoSponsorsException {
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if (f1Car1.getSponsors().length == 0) {
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throw new NoSponsorsException(f1Car1.getTeam() + " has no Sponsors");
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} else {
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String expected =
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"Here's a list of our Sponsors:"
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+ System.lineSeparator()
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+ "Hp"
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+ System.lineSeparator()
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+ "Shell"
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+ System.lineSeparator()
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+ "UniCredit"
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+ System.lineSeparator()
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+ "IBM"
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+ System.lineSeparator()
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+ "Puma"
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+ System.lineSeparator()
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+ "VGW Play"
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+ System.lineSeparator();
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f1Car1.printSponsors();
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assertEquals(expected, outContent.toString());
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}
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}
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@Test
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void testPrintSponsors_noSponsors() {
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NoSponsorsException exception =
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assertThrows(NoSponsorsException.class, () -> f1Car2.printSponsors());
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assertEquals(f1Car2.getTeam() + " has no Sponsors", exception.getMessage());
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}
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}

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