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feat: created FootballTeam object class w/ custom exception (#538)
* feat: created footballteam object class w/ custom exception * fix: ran gradle commadn to fix violations
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‎lesson_16/objects/objects_app/src/main/java/com/codedifferently/footballteamobject/DuplicatePlayerException.java

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package com.codedifferently.footballteamobject;
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public class DuplicatePlayerException extends Exception {
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public DuplicatePlayerException(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/footballteamobject/FootballTeam.java

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package com.codedifferently.footballteamobject;
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import java.util.HashMap;
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import java.util.Map;
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public class FootballTeam {
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public static class DuplicatePlayerException extends Exception {
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public DuplicatePlayerException(String message) {
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super(message);
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}
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}
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private int playerCount;
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private int jerseyNumber50AndOver;
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private int jerseyNumberUnder50;
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private Map<Integer, String> players = new HashMap<>();
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private final String teamName;
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private final String location;
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private final Conference conference;
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public FootballTeam(
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String teamName, String location, Conference conference, Map<Integer, String> players) {
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this.teamName = teamName;
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this.location = location;
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this.conference = conference;
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this.players = players;
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}
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public enum Conference {
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// Power Five Conferences
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ACC,
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BIG_12,
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BIG_10,
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PAC_12,
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SEC,
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// Group of Five Conferences
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AMERICAN,
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CONFERENCE_USA,
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MAC,
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MOUNTAIN_WEST,
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SUN_BELT
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}
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public boolean isPowerFive() {
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if (conference == Conference.ACC
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|| conference == Conference.BIG_12
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|| conference == Conference.BIG_10
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|| conference == Conference.PAC_12
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|| conference == Conference.SEC) {
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return true;
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}
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return false;
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}
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public String getTeamName() {
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return teamName;
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}
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public String getLocation() {
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return location;
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}
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public Conference getConference() {
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return conference;
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}
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public int getPlayerCount() {
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return playerCount;
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}
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public Map<Integer, String> getPlayers() {
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return players;
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}
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public void addPlayer(int number, String name) throws DuplicatePlayerException {
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if (players.containsKey(number)) {
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throw new DuplicatePlayerException("A player with that number already exists.");
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}
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players.put(number, name);
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playerCount++;
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}
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public void removePlayer(int number) {
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players.remove(number);
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playerCount--;
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}
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public void tallyJerseyNumbers() {
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for (Map.Entry<Integer, String> entry : players.entrySet()) {
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if (entry.getKey() < 50) {
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jerseyNumberUnder50++;
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} else {
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jerseyNumber50AndOver++;
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}
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}
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}
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public int getJerseyNumber50AndOver() {
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return jerseyNumber50AndOver;
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}
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public int getJerseyNumberUnder50() {
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return jerseyNumberUnder50;
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}
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}

‎lesson_16/objects/objects_app/src/test/java/com/codedifferently/footballteamobject/FootballTeamTest.java

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package com.codedifferently.footballteamobject;
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import static org.assertj.core.api.Assertions.assertThatThrownBy;
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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.assertNotNull;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import com.codedifferently.footballteamobject.FootballTeam.Conference;
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import java.util.HashMap;
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import java.util.Map;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Test;
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public class FootballTeamTest {
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FootballTeam team;
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private Map<Integer, String> players;
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@BeforeEach
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void setUp() {
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team = new FootballTeam("Alabama", "Tuscaloosa", FootballTeam.Conference.SEC, new HashMap<>());
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players = new HashMap<>();
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players.put(2, "Derrick Henry");
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}
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@Test
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public void testGetTeamName_ReturnsCorrectName() {
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assertEquals("Alabama", team.getTeamName());
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}
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@Test
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public void testGetTeamName_ReturnsNonNull() {
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assertNotNull(team.getTeamName());
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}
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@Test
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public void testAddPlayer() throws FootballTeam.DuplicatePlayerException {
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team.addPlayer(1, "John Doe");
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assertEquals(1, team.getPlayerCount());
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assertEquals("John Doe", team.getPlayers().get(1));
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}
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@Test
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public void testRemovePlayer() throws FootballTeam.DuplicatePlayerException {
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team.addPlayer(1, "John Doe");
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team.removePlayer(1);
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assertEquals(0, team.getPlayerCount());
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assertFalse(team.getPlayers().containsKey(1));
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}
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@Test
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public void testTallyJerseyNumbers_Under50() throws FootballTeam.DuplicatePlayerException {
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team.addPlayer(1, "Player 1");
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team.tallyJerseyNumbers();
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assertEquals(1, team.getJerseyNumberUnder50());
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}
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@Test
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public void testPowerFiveConferences() {
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FootballTeam team = new FootballTeam("Team Name", "Location", Conference.ACC, new HashMap<>());
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assertTrue(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.BIG_12, new HashMap<>());
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assertTrue(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.BIG_10, new HashMap<>());
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assertTrue(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.PAC_12, new HashMap<>());
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assertTrue(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.SEC, new HashMap<>());
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assertTrue(team.isPowerFive());
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}
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@Test
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public void testGroupOfFiveConferences() {
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FootballTeam team =
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new FootballTeam("Team Name", "Location", Conference.AMERICAN, new HashMap<>());
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assertFalse(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.CONFERENCE_USA, new HashMap<>());
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assertFalse(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.MAC, new HashMap<>());
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assertFalse(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.MOUNTAIN_WEST, new HashMap<>());
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assertFalse(team.isPowerFive());
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team = new FootballTeam("Team Name", "Location", Conference.SUN_BELT, new HashMap<>());
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assertFalse(team.isPowerFive());
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}
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@Test
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void testDuplicatePlayerException() {
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String message = "A player with that number already exists.";
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DuplicatePlayerException exception = new DuplicatePlayerException(message);
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assertThatThrownBy(
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() -> {
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throw exception;
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})
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.isInstanceOf(DuplicatePlayerException.class)
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.hasMessage(message);
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}
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}

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