diff --git a/Server/src/test/java/uulm/teamname/marvelous/server/lobbymanager/LobbyConnectionTest.java b/Server/src/test/java/uulm/teamname/marvelous/server/lobbymanager/LobbyConnectionTest.java
index ed4a2c6..1016a6d 100644
--- a/Server/src/test/java/uulm/teamname/marvelous/server/lobbymanager/LobbyConnectionTest.java
+++ b/Server/src/test/java/uulm/teamname/marvelous/server/lobbymanager/LobbyConnectionTest.java
@@ -2,10 +2,14 @@ package uulm.teamname.marvelous.server.lobbymanager;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import uulm.teamname.marvelous.gamelibrary.events.Event;
+import uulm.teamname.marvelous.gamelibrary.events.EventBuilder;
+import uulm.teamname.marvelous.gamelibrary.events.EventType;
 import uulm.teamname.marvelous.gamelibrary.messages.BasicMessage;
 
 import org.java_websocket.WebSocket;
 import uulm.teamname.marvelous.gamelibrary.messages.ParticipantType;
+import uulm.teamname.marvelous.gamelibrary.messages.server.EventMessage;
 
 import java.util.function.BiConsumer;
 
@@ -60,4 +64,135 @@ class LobbyConnectionTest {
         assertThat(connection.isFull()).isTrue();
     }
 
+    @Test
+    void addPlayerOneTest(){
+        var websocket = mock(WebSocket.class);
+
+        Participant playerOne = new Participant(websocket, ParticipantType.PlayerOne, "PlayerOne");
+
+        assertThat(connection.addPlayer1(playerOne)).isTrue();
+        assertThat(connection.hasPlayer1()).isTrue();
+        assertThat(connection.addPlayer1(playerOne)).isFalse();
+    }
+
+    @Test
+    void addPlayerTwoTest(){
+        var websocket = mock(WebSocket.class);
+
+        Participant playerTwo = new Participant(websocket, ParticipantType.PlayerTwo, "PlayerTwo");
+
+        assertThat(connection.addPlayer2(playerTwo)).isTrue();
+        assertThat(connection.hasPlayer2()).isTrue();
+        assertThat(connection.addPlayer2(playerTwo)).isFalse();
+    }
+
+    @Test
+    void addPlayerTest(){
+        var websocket = mock(WebSocket.class);
+
+        Participant playerOne = new Participant(websocket, ParticipantType.PlayerOne, "PlayerOne");
+        Participant playerTwo = new Participant(websocket, ParticipantType.PlayerTwo, "PlayerTwo");
+        Participant spectator = new Participant(websocket, ParticipantType.Spectator,"Spectator");
+
+        assertThat(connection.addPlayer(playerOne)).isTrue();
+        assertThat(connection.addPlayer(playerTwo)).isTrue();
+        assertThat(connection.addPlayer(spectator)).isFalse();
+        assertThat(connection.contains(playerOne)).isTrue();
+        assertThat(connection.contains(playerTwo)).isTrue();
+        assertThat(connection.contains(spectator)).isFalse();
+    }
+
+    @Test
+    void addSpectatorTest(){
+        var websocket = mock(WebSocket.class);
+
+        Participant playerOne = new Participant(websocket, ParticipantType.PlayerOne, "PlayerOne");
+        Participant playerTwo = new Participant(websocket, ParticipantType.PlayerTwo, "PlayerTwo");
+        Participant spectator = new Participant(websocket, ParticipantType.Spectator,"Spectator");
+
+        assertThat(connection.addSpectator(playerOne)).isFalse();
+        assertThat(connection.addSpectator(playerTwo)).isFalse();
+        assertThat(connection.addSpectator(spectator)).isTrue();
+        assertThat(connection.contains(playerOne)).isFalse();
+        assertThat(connection.contains(playerTwo)).isFalse();
+        assertThat(connection.contains(spectator)).isTrue();
+    }
+
+    @Test
+    void addOneSpectatorAndOnePlayer(){
+        var websocket = mock(WebSocket.class);
+
+        Participant playerOne = new Participant(websocket, ParticipantType.PlayerOne, "PlayerOne");
+        Participant spectator = new Participant(websocket, ParticipantType.Spectator,"Spectator");
+
+        assertThat(connection.addPlayer(playerOne)).isTrue();
+        assertThat(connection.addSpectator(spectator)).isTrue();
+        assertThat(connection.contains(playerOne)).isTrue();
+        assertThat(connection.contains(spectator)).isTrue();
+    }
+
+    @Test
+    void removeParticipantTest(){
+        var websocket = mock(WebSocket.class);
+
+        Participant playerOne = new Participant(websocket, ParticipantType.PlayerOne, "PlayerOne");
+        Participant playerTwo = new Participant(websocket, ParticipantType.PlayerTwo, "PlayerTwo");
+        Participant spectator = new Participant(websocket, ParticipantType.Spectator,"Spectator");
+
+        connection.addPlayer(playerOne);
+        connection.addPlayer(playerTwo);
+        connection.addSpectator(spectator);
+
+        assertThat(connection.removeParticipant(spectator)).isTrue();
+        assertThat(connection.removeParticipant(playerOne)).isTrue();
+        assertThat(connection.removeParticipant(playerOne)).isFalse();
+        assertThat(connection.removeParticipant(playerTwo)).isTrue();
+    }
+
+    @Test
+    void sendMessageTest(){
+        var webSocket = mock(WebSocket.class);
+        var participant = new Participant(webSocket, ParticipantType.PlayerOne, "playerOne");
+        var event = new Event[]{
+                new EventBuilder(EventType.PauseStartEvent).buildGameEvent(),
+                new EventBuilder(EventType.MoveEvent).buildGameEvent()
+        };
+
+        var message = new EventMessage();
+        message.messages = event;
+
+        connection.sendEvents(participant, event);
+        verify(sendMessageCallback).accept(participant.getConnection(), message);
+    }
+
+    @Test
+    void broadcastEventTest(){
+        var webSock = mock(WebSocket.class);
+
+        Participant playerOne = new Participant(webSock, ParticipantType.PlayerOne, "playerOne");
+        Participant playerTwo = new Participant(webSock, ParticipantType.PlayerTwo, "playerTwo");
+        Participant spectatorOne = new Participant(webSock, ParticipantType.Spectator, "spectatorOne");
+        Participant spectatorTwo = new Participant(webSock, ParticipantType.Spectator, "spectatorTwo");
+
+        connection.addPlayer(playerOne);
+        connection.addPlayer(playerTwo);
+        connection.addSpectator(spectatorOne);
+        connection.addSpectator(spectatorTwo);
+
+        var events = new Event[]{
+                new EventBuilder(EventType.PauseStartEvent).buildGameEvent(),
+                new EventBuilder(EventType.MoveEvent).buildGameEvent()
+        };
+
+        var message = new EventMessage();
+        message.messages = events;
+
+        //TODO: fix them
+        connection.broadcastEvents(events);
+        verify(sendMessageCallback).accept(playerOne.getConnection(), message);
+        verify(sendMessageCallback).accept(playerTwo.getConnection(), message);
+        verify(sendMessageCallback).accept(spectatorOne.getConnection(), message);
+        verify(sendMessageCallback).accept(spectatorTwo.getConnection(), message);
+    }
+
 }