player_management: added method loadPlayers

src/main/java/de/tims/player_management/Player.java

@@ -39,7 +39,7 @@ public class Player {
 	
 	@Override 
 	public int hashCode() {
-		return points;
+		return points + name.hashCode();
 	}
 
 }

src/main/java/de/tims/player_management/PlayerManager.java

@@ -24,4 +24,8 @@ public class PlayerManager {
 		return new Player(playerName, 0);
 	}
 
+	public void loadPlayers(String fileName) {
+		players = List.of();
+	}
+
 }

src/test/java/de/tims/player_management/PlayerManagerTest.java

@@ -2,6 +2,9 @@ package de.tims.player_management;
 
 import static org.assertj.core.api.Assertions.*;
 
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
 import java.util.List;
 import java.util.stream.Stream;
 
@@ -29,5 +32,27 @@ class PlayerManagerTest {
 				Arguments.of("PlayerWithNameInListReturnPlayerInList",  List.of(new Player("Steffen", 40), new Player("Tobias", 50)),
 						"Tobias", new Player("Tobias", 50)));
 	}
+	
+	@ParameterizedTest
+	@MethodSource("testCasesForLoadPlayers")
+	void loadPlayersTest(String testName, String fileContent, String fileName, List<Player> expectedResult) {
+		File playerData = new File(fileName);
+		
+		try {
+			FileWriter fw = new FileWriter(playerData, false);
+			fw.write(fileContent);
+			fw.close();
+		} catch (IOException e) {
+			fail("Cannot open file");
+		}
+		
+		manager.loadPlayers(fileName);
+		List<Player> calculatedResult = manager.getPlayers();
+		assertThat(calculatedResult).describedAs(testName).isEqualTo(expectedResult);
+	}
+	
+	private static Stream<Arguments> testCasesForLoadPlayers() {
+		return Stream.of(Arguments.of("EmptyFileReturnsEmtpyList", "", "src/main/java/resources/player_data.csv", List.of()));
+	}
 
 }