player_management: savePlayers writes player list to file

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

@@ -2,6 +2,7 @@ package de.tims.player_management;
 
 import java.io.File;
 import java.io.FileReader;
+import java.io.FileWriter;
 import java.io.IOException;
 import java.util.LinkedList;
 import java.util.List;
@@ -72,8 +73,19 @@ public class PlayerManager {
 	}
 
 	public void savePlayers(String fileName) {
-		// TODO Auto-generated method stub
+		File playerData = new File(fileName);
 		
+		try {
+			FileWriter fw = new FileWriter(playerData, false);
+			
+			for (Player elem : players) {
+				fw.write(elem.getName() + ";" + elem.getPoints() + "\n");
+			}
+			
+			fw.close();
+		} catch (IOException e) {
+			return;
+		}	
 	}
 
 }

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

@@ -53,7 +53,8 @@ class PlayerManagerTest {
 	
 	private static Stream<Arguments> testCasesForLoadPlayers() {
 		return Stream.of(Arguments.of("EmptyFileReturnsEmtpyList", "", "src/test/java/resources/player_testdata.csv", List.of()),
-				Arguments.of("OnePlayerInFileReturnsListWithOneElement", "Tobias;50", "src/test/java/resources/player_testdata.csv", List.of(new Player("Tobias", 50))),
+				Arguments.of("OnePlayerInFileReturnsListWithOneElement", "Tobias;50", "src/test/java/resources/player_testdata.csv", 
+						List.of(new Player("Tobias", 50))),
 				Arguments.of("MorePlayersInFileReturnLongerList", "Tobias;50\nLorenz;40\nSteffen;60", "src/test/java/resources/player_testdata.csv", 
 						List.of(new Player("Tobias", 50), new Player("Lorenz", 40), new Player("Steffen", 60))));
 	}
@@ -69,7 +70,9 @@ class PlayerManagerTest {
 	}
 	
 	private static Stream<Arguments> testCasesForSavePlayers() {
-		return Stream.of(Arguments.of("EmptyListIsWrittenAsEmptyFile", "src/test/java/resources/player_testdata2.csv", List.of()));
+		return Stream.of(Arguments.of("EmptyListIsWrittenAsEmptyFile", "src/test/java/resources/player_testdata2.csv", List.of()),
+				Arguments.of("WriteElementsOfListToFile", "src/test/java/resources/player_testdata2.csv", 
+						List.of(new Player("Tobias", 50), new Player("Steffen", 60))));
 	}
 
 }

src/test/java/resources/player_testdata2.csv

@@ -0,0 +1,2 @@
+Tobias;50
+Steffen;60