diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatClientInterface.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatClientInterface.java
new file mode 100644
index 0000000..89119a8
--- /dev/null
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatClientInterface.java
@@ -0,0 +1,13 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.chat;
+
+import java.util.List;
+
+/** Interface used to create test instances of the ChatClient */
+public interface ChatClientInterface {
+
+    List<Message> getMessages();
+
+    void sendMessage(Message message);
+
+    List<String> getUsers();
+}
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java
index 09d7838..58fb787 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatController.java
@@ -33,9 +33,9 @@ public class ChatController {
 
     private volatile String username;
 
-    private final ClientService clientService;
+    private ClientService clientService;
 
-    private final ChatClient chatClient;
+    private final ChatClientInterface chatClient;
 
     public ChatBoxController getChatBoxController() {
         return chatBoxController;
@@ -112,6 +112,39 @@ public class ChatController {
                 REFRESH_TIME);
     }
 
+    /**
+     * Another constructor to give the ChatClient directly instead of the Client Service used only
+     * for test purposes
+     *
+     * @param username
+     */
+    public ChatController(String username, ChatClientInterface chatClient) {
+        this.username = username;
+        this.chatClient = chatClient;
+        chatModelMap = new LinkedHashMap<>();
+        localUserList = new ArrayList<>();
+        this.chatBoxController = new ChatBoxController(username, this);
+        this.logger = LogManager.getLogger(ChatController.class);
+        this.serverEventListener = this::handleServerEvent;
+        this.activeChatControllers = new HashMap<>();
+
+        this.timer = new Timer(true);
+        timer.schedule(
+                new TimerTask() {
+                    @Override
+                    public void run() {
+                        try {
+                            receiveMessage();
+                            checkWhisperUsers();
+                        } catch (RuntimeException e) {
+                            logger.warn("Chat refresh failed: {}", e.getMessage());
+                        }
+                    }
+                },
+                0,
+                REFRESH_TIME);
+    }
+
     private void registerAsActiveController(ClientService clientService) {
         synchronized (ACTIVE_CONTROLLERS) {
             ChatController oldController = ACTIVE_CONTROLLERS.get(clientService);
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java
index 6cbca3c..e8949fe 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatModel.java
@@ -2,8 +2,6 @@ package ch.unibas.dmi.dbis.cs108.casono.client.chat;
 
 import java.util.ArrayList;
 import java.util.function.Consumer;
-import javafx.beans.property.IntegerProperty;
-import javafx.beans.property.SimpleIntegerProperty;
 
 /**
  * ChatModel, stores the data for a specific chat
@@ -12,7 +10,7 @@ import javafx.beans.property.SimpleIntegerProperty;
  */
 public class ChatModel {
 
-    private ArrayList<Consumer<Message>> listeners = new ArrayList<>();
+    private final ArrayList<Consumer<Message>> listeners = new ArrayList<>();
 
     public ArrayList<Message> messages;
 
@@ -24,8 +22,6 @@ public class ChatModel {
     /** The person to send the message to If the chat is a whisper chat */
     private String target;
 
-    private final IntegerProperty count;
-
     public int lobbyId;
 
     /**
@@ -37,10 +33,9 @@ public class ChatModel {
      * @param target The username of the whisper recipient, or null for other chat types.
      */
     public ChatModel(ChatType chattype, String username, int lobbyId, String target) {
-        this.messages = new ArrayList<Message>();
+        this.messages = new ArrayList<>();
         this.chattype = chattype;
         this.username = username;
-        this.count = new SimpleIntegerProperty(0);
         this.lobbyId = lobbyId;
         this.target = target;
     }
@@ -62,7 +57,7 @@ public class ChatModel {
      */
     public synchronized void addMessage(Message msg) {
         messages.add(msg);
-        listeners.stream().forEach((l) -> l.accept(messages.getLast()));
+        listeners.forEach((l) -> l.accept(messages.getLast()));
     }
 
     /**
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java
index abe2ec1..4decd18 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/Message.java
@@ -15,8 +15,8 @@ public class Message {
     private final String message;
     public String sender;
     public String timestamp;
-    public int lobbyId = 0;
-    public String target = null;
+    public int lobbyId;
+    public String target;
 
     /**
      * Constructs a Message with a provided timestamp. Typically used when reconstructing messages
@@ -100,7 +100,7 @@ public class Message {
      * @return A formatted string containing all message attributes for server transmission.
      */
     public String toArgsString() {
-        String gameIdString = "";
+        String gameIdString;
         if (lobbyId >= 0) {
             gameIdString = " GAME=" + lobbyId;
         } else {
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ChatClient.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ChatClient.java
index 298e557..d46ce22 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ChatClient.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/network/ChatClient.java
@@ -1,5 +1,6 @@
 package ch.unibas.dmi.dbis.cs108.casono.client.network;
 
+import ch.unibas.dmi.dbis.cs108.casono.client.chat.ChatClientInterface;
 import ch.unibas.dmi.dbis.cs108.casono.client.chat.Message;
 import ch.unibas.dmi.dbis.cs108.casono.server.network.command.parsing.RequestParameter;
 import java.util.ArrayList;
@@ -12,7 +13,7 @@ import org.apache.logging.log4j.Logger;
  * from the server. It uses the ClientService to send commands and receive responses from the
  * server.
  */
-public class ChatClient {
+public class ChatClient implements ChatClientInterface {
 
     private final ClientService clientService;
     private final Logger logger;
diff --git a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatBoxController.java b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatBoxController.java
index 46bfe4f..897bc04 100644
--- a/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatBoxController.java
+++ b/src/main/java/ch/unibas/dmi/dbis/cs108/casono/client/ui/chatui/ChatBoxController.java
@@ -195,8 +195,7 @@ public class ChatBoxController {
                 () -> {
                     try {
                         ChatViewController chatViewController =
-                                new ChatViewController(
-                                        this.chatController, chatModel, this);
+                                new ChatViewController(this.chatController, chatModel, this);
 
                         ChatKey chatKey;
                         if (chatType.equals(ChatType.WHISPER)) {
diff --git a/src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml b/src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml
deleted file mode 100644
index 98db056..0000000
--- a/src/main/resources/ui-structure/gameuicomponents/chatui/chatbox.fxml
+++ /dev/null
@@ -1,59 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<?import javafx.geometry.*?>
-<?import javafx.scene.control.*?>
-<?import javafx.scene.layout.*?>
-
-
-<!--
-    Dieses Fenster wird später mit den Serveranfragen verknüpft,
-    um Nachrichten von Mitspielern und Systemmeldungen in Echtzeit anzuzeigen.
-
-    Der Chat unterscheidet intern zwischen:
-    - Player-to-Player (Privater 2-Personen-Chat)
-    - Lobby-Chat (Aktueller Raum)
-    - Globaler Chat (Gesamter Server)
-
-    Features, die später implementiert werden sollen:
-    - Schicke Chat-Bubbles mit Namen und Uhrzeit.
--->
-
-<VBox xmlns="http://javafx.com/javafx/21"
-      xmlns:fx="http://javafx.com/fxml/1"
-    fx:controller="ch.unibas.dmi.dbis.cs108.casono.client.ui.chatui.ChatViewController"
-      alignment="CENTER"
-      stylesheets="@chatui.css">
-
-    <!-- Innenabstand: Schafft oben, rechts und unten 30 Pixel Platz, links nur 10 Pixel (asymmetrisch) -->
-    <padding>
-        <Insets top="30" right="30" bottom="30" left="10"/>
-    </padding>
-
-    <children>
-        <VBox VBox.vgrow="ALWAYS"
-              styleClass="chat-box"
-              spacing="10"
-              maxWidth="Infinity">
-
-            <children>
-                <Label text="== CHAT ==" styleClass="chat-header" alignment="CENTER" maxWidth="Infinity"/>
-                <Region minHeight="4" styleClass="chat-separator"/>
-
-                <!-- Chatnachrichten werden hier hinzugefügt -->
-                <ScrollPane fx:id="chatScrollPane" fitToWidth="true" vbarPolicy="AS_NEEDED" hbarPolicy="NEVER" VBox.vgrow="ALWAYS" styleClass="chat-scroll-pane">
-                    <content>
-                        <VBox fx:id="chatVBox" spacing="10" styleClass="chat-VBox"/>
-                    </content>
-                </ScrollPane>
-
-                <!-- Eingabebereich -->
-                <HBox spacing="10">
-                    <!-- TODO: Größe des TextFields dynamisch anpassen -->
-                    <TextField fx:id="inputField" HBox.hgrow="ALWAYS" promptText="Nachricht eingeben..." styleClass="gray-input-field" onAction="#sendMessage"/>
-                    <Button fx:id="sendButton" text="SENDEN" onAction="#sendMessage" styleClass="yellow-button"/>
-                    <Button fx:id="refreshButton" text="NEU" onAction="#showMessage" styleClass="yellow-button"/>
-                </HBox>
-            </children>
-        </VBox>
-    </children>
-</VBox>
\ No newline at end of file
diff --git a/src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css b/src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css
deleted file mode 100644
index 826aa7b..0000000
--- a/src/main/resources/ui-structure/gameuicomponents/chatui/chatui.css
+++ /dev/null
@@ -1,155 +0,0 @@
-.chat-box {
-    -fx-background-color: #0d9e3b;
-    -fx-background-radius: 58;
-    -fx-border-radius: 50;
-    -fx-border-color: #5c3d10 #3d260a #3d260a #5c3d10;
-    -fx-border-width: 12;
-    -fx-padding: 20;
-    -fx-effect: dropshadow(one-pass-box, rgba(0,0,0,1), 0, 0, 15, 15);
-}
-
-.chat-header {
-    -fx-text-fill: #ffffff;
-    -fx-font-size: 22px;
-    -fx-font-weight: bold;
-    -fx-padding: 0 0 10 0;
-    -fx-effect: dropshadow(one-pass-box, #000000, 0, 0, 3, 3);
-}
-
-.chat-separator {
-    -fx-background-color: #ffffff;
-    -fx-min-height: 4px;
-    -fx-effect: dropshadow(one-pass-box, #000000, 0, 0, 3, 3);
-}
-
-.black-input-field {
-    -fx-background-color: #1a1a1a;
-    -fx-text-fill: #ffffff;
-    -fx-font-family: "Courier New";
-    -fx-font-weight: bold;
-    -fx-background-radius: 8;
-    -fx-border-radius: 8;
-    -fx-border-color: #444444;
-    -fx-border-width: 2;
-    -fx-padding: 5 12;
-}
-
-.black-input-field:hover {
-    -fx-translate-y: -3;
-    -fx-effect: dropshadow(one-pass-box, rgba(0, 0, 0, 0.8), 0, 0, 3, 3);
-}
-
-
-.black-input-field:focused {
-    -fx-border-color: #ffffff;
-    -fx-background-color: #000000;
-}
-
-.gray-input-field {
-    -fx-background-color: #333333;
-    -fx-text-fill: #ffffff;
-    -fx-font-family: "Courier New";
-    -fx-font-weight: bold;
-    -fx-background-radius: 8;
-    -fx-border-radius: 8;
-    -fx-border-color: #666666;
-    -fx-color-color: #cccccc;
-    -fx-border-width: 2;
-    -fx-padding: 5 12;
-}
-
-.gray-input-field:hover {
-    -fx-translate-y: -3;
-    -fx-effect: dropshadow(one-pass-box, rgba(0, 0, 0, 0.8), 0, 0, 3, 3);
-}
-
-.gray-input-field:focused {
-    -fx-border-color: #ffffff;
-    -fx-background-color: #333333;
-}
-
-.yellow-button {
-    -fx-background-color: #b8860b;
-    -fx-border-color: #ffd700;
-    -fx-text-fill: #ffffff;
-}
-
-.red-button {
-    -fx-background-color: #8b0000;
-    -fx-border-color: #ff4444;
-    -fx-text-fill: #ffffff;
-}
-
-.gray-button {
-    -fx-background-color: #333333;
-    -fx-border-color: #666666;
-    -fx-text-fill: #cccccc;
-}
-
-.gray-button, .yellow-button, .red-button {
-    -fx-background-radius: 12;
-    -fx-border-radius: 12;
-    -fx-font-family: "Courier New";
-    -fx-font-weight: bold;
-    -fx-border-width: 2;
-    -fx-padding: 6 15;
-    -fx-cursor: hand;
-}
-
-.gray-button:hover, .yellow-button:hover, .red-button:hover {
-    -fx-translate-y: -3;
-    -fx-effect: dropshadow(one-pass-box, rgba(0, 0, 0, 0.8), 0, 0, 3, 3);
-}
-
-.chat-scroll-pane {
-    -fx-background-color: transparent;
-    -fx-background: transparent;
-    -fx-border-color: transparent;
-}
-
-.chat-VBox {
-    -fx-background-color: transparent;
-    -fx-background: transparent;
-}
-.scroll-pane {
-    -fx-background-color: transparent;
-    -fx-border-color: transparent;
-}
-
-.scroll-pane .scroll-bar:vertical {
-    -fx-background-color: transparent;
-}
-
-.scroll-pane .scroll-bar .track {
-    -fx-background-color: #5c3d10;
-    -fx-background-insets: 0;
-    -fx-background-radius: 5;
-}
-
-.scroll-pane .scroll-bar .thumb {
-    -fx-background-color: #3d260a;
-    -fx-background-insets: 0;
-    -fx-background-radius: 5;
-    -fx-pref-width: 6;
-    -fx-pref-height: 6;
-    -fx-padding: 0;
-}
-
-.scroll-pane .scroll-bar:horizontal {
-    -fx-background-color: transparent;
-}
-
-.scroll-pane .scroll-bar:horizontal .track {
-    -fx-background-color: #5c3d10;
-    -fx-background-radius: 5;
-}
-
-.scroll-pane .scroll-bar:horizontal .thumb {
-    -fx-background-color: #3d260a;
-    -fx-background-radius: 5;
-    -fx-pref-height: 6;
-}
-
-.scroll-pane .scroll-bar:horizontal .thumb:hover {
-    -fx-pref-height: 10;
-}
diff --git a/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatClientTest.java b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatClientTest.java
new file mode 100644
index 0000000..f55e904
--- /dev/null
+++ b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatClientTest.java
@@ -0,0 +1,41 @@
+package ch.unibas.dmi.dbis.cs108.casono.client.chat;
+
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Queue;
+
+public class ChatClientTest implements ChatClientInterface {
+
+    private ChatClientTest otherChatClient;
+
+    public final Queue<Message> messageQueue;
+
+    public ChatClientTest() {
+        this.messageQueue = new LinkedList<>();
+    }
+
+    public ChatClientTest(ChatClientTest otherChatClient) {
+        this.otherChatClient = otherChatClient;
+        this.messageQueue = new LinkedList<>();
+    }
+
+    @Override
+    public void sendMessage(Message message) {
+        otherChatClient.messageQueue.add(message);
+    }
+
+    @Override
+    public List<Message> getMessages() {
+        List<Message> messages = new LinkedList<>();
+        while (!messageQueue.isEmpty()) {
+            Message message = messageQueue.poll();
+            messages.add(message);
+        }
+        return messages;
+    }
+
+    @Override
+    public List<String> getUsers() {
+        return List.of();
+    }
+}
diff --git a/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java
index 18990b1..c77d0ca 100644
--- a/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java
+++ b/src/test/java/ch/unibas/dmi/dbis/cs108/casono/client/chat/ChatControllerTest.java
@@ -1,21 +1,151 @@
 package ch.unibas.dmi.dbis.cs108.casono.client.chat;
 
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import java.util.ArrayList;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
 public class ChatControllerTest {
 
+    ChatController chatController1;
+    ChatController chatController2;
+
+    String name1 = "testperson1";
+    String name2 = "testperson1";
+
     @BeforeEach
-    public void setup() {}
+    public void setup() {
+        ChatClientTest receivingChatClient = new ChatClientTest();
+        ChatClientTest sendingChatClient = new ChatClientTest(receivingChatClient);
+        this.chatController1 = new ChatController(name1, sendingChatClient);
+        this.chatController2 = new ChatController(name2, receivingChatClient);
+    }
 
     @AfterEach
     public void teardown() {}
 
-    /*
-     * @Test
-     * public void testChatController() {
-     * Client client = new Client("user1");
-     * client.startApplication();
-     * }
-     */
+    @Test
+    public void sendGlobalMessage() {
+        ChatModel global = new ChatModel(ChatType.GLOBAL, name2, -1, null);
+        chatController2.getChatModelMap().put(new ChatController.ChatKey(ChatType.GLOBAL), global);
+
+        Message msg1 = new Message(ChatType.GLOBAL, -1, name1, null, "Hallo Welt");
+        Message msg2 = new Message(ChatType.GLOBAL, -1, name1, null, "$$Hallo$$Welt$$");
+        Message msg3 = new Message(ChatType.GLOBAL, -1, name1, null, "_*'=(&%$/§&%");
+        Message msg4 = new Message(ChatType.LOBBY, -1, name1, null, "Guten Tag");
+        Message msg5 = new Message(ChatType.LOBBY, -1, name1, null, "$/&)$)(&=)$=");
+        Message msg6 = new Message(ChatType.GLOBAL, -1, name1, null, "NAME=ANDERER_NUTZER");
+        Message msg7 = new Message(ChatType.GLOBAL, -1, name1, null, "________");
+
+        ArrayList<Message> messages = new ArrayList<>();
+        messages.add(msg1);
+        messages.add(msg2);
+        messages.add(msg3);
+        messages.add(msg4);
+        messages.add(msg5);
+        messages.add(msg6);
+        messages.add(msg7);
+
+        chatController1.onSendToNetwork(msg1);
+        chatController1.onSendToNetwork(msg2);
+        chatController1.onSendToNetwork(msg3);
+        chatController1.onSendToNetwork(msg4);
+        chatController1.onSendToNetwork(msg5);
+        chatController1.onSendToNetwork(msg6);
+        chatController1.onSendToNetwork(msg7);
+
+        chatController2.receiveMessage();
+
+        assertEquals(5, global.messages.size());
+
+        assertEquals(messages.get(0), global.messages.get(0));
+        assertEquals(messages.get(1), global.messages.get(1));
+        assertEquals(messages.get(2), global.messages.get(2));
+
+        assertNotEquals(messages.get(3), global.messages.get(3));
+        assertNotEquals(messages.get(4), global.messages.get(4));
+
+        assertEquals(messages.get(5), global.messages.get(3));
+        assertEquals(messages.get(6), global.messages.get(4));
+    }
+
+    @Test
+    public void sendLobbyMessage() {
+        ChatModel lobby = new ChatModel(ChatType.LOBBY, name2, 1, null);
+        chatController2.getChatModelMap().put(new ChatController.ChatKey(ChatType.LOBBY), lobby);
+
+        Message msg1 = new Message(ChatType.LOBBY, 1, name1, null, "Hallo Welt");
+        Message msg2 = new Message(ChatType.LOBBY, 1, name1, null, "$$Hallo$$Welt$$");
+        Message msg3 = new Message(ChatType.LOBBY, 1, name1, null, "_*'=(&%$/§&%");
+        Message msg4 = new Message(ChatType.LOBBY, 4, name1, null, "Guten Tag");
+        Message msg5 = new Message(ChatType.LOBBY, 5, name1, null, "$/&)$)(&=)$=");
+        Message msg6 = new Message(ChatType.LOBBY, 1, name1, null, "NAME=ANDERER_NUTZER");
+        Message msg7 = new Message(ChatType.LOBBY, 1, name1, null, "________");
+
+        ArrayList<Message> messages = new ArrayList<>();
+        messages.add(msg1);
+        messages.add(msg2);
+        messages.add(msg3);
+        messages.add(msg4);
+        messages.add(msg5);
+        messages.add(msg6);
+        messages.add(msg7);
+
+        for (Message msg : messages) {
+            chatController1.onSendToNetwork(msg);
+        }
+
+        chatController2.receiveMessage();
+
+        assertEquals(5, lobby.messages.size());
+
+        assertEquals(messages.get(0), lobby.messages.get(0));
+        assertEquals(messages.get(1), lobby.messages.get(1));
+        assertEquals(messages.get(2), lobby.messages.get(2));
+
+        assertNotEquals(messages.get(3), lobby.messages.get(3));
+        assertNotEquals(messages.get(4), lobby.messages.get(4));
+
+        assertEquals(messages.get(5), lobby.messages.get(3));
+        assertEquals(messages.get(6), lobby.messages.get(4));
+    }
+
+    @Test
+    public void sendWhisperMessage() {
+        ChatModel whisper = new ChatModel(ChatType.WHISPER, name2, -1, name1);
+        chatController2
+                .getChatModelMap()
+                .put(new ChatController.ChatKey(ChatType.WHISPER, name1), whisper);
+
+        Message msg1 = new Message(ChatType.WHISPER, -1, name1, name2, "Hallo Welt");
+        Message msg2 = new Message(ChatType.WHISPER, -1, name1, name2, "$$Hallo$$Welt$$");
+        Message msg3 = new Message(ChatType.WHISPER, -1, name1, name2, "_*'=(&%$/§&%");
+        Message msg4 = new Message(ChatType.WHISPER, -1, name1, name2, "NAME=ANDERER_NUTZER");
+        Message msg5 = new Message(ChatType.WHISPER, -1, name1, name2, "________");
+
+        ArrayList<Message> messages = new ArrayList<>();
+        messages.add(msg1);
+        messages.add(msg2);
+        messages.add(msg3);
+        messages.add(msg4);
+        messages.add(msg5);
+
+        for (Message msg : messages) {
+            chatController1.onSendToNetwork(msg);
+        }
+
+        chatController2.receiveMessage();
+
+        assertEquals(5, whisper.messages.size());
+
+        assertEquals(messages.get(0), whisper.messages.get(0));
+        assertEquals(messages.get(1), whisper.messages.get(1));
+        assertEquals(messages.get(2), whisper.messages.get(2));
+
+        assertEquals(messages.get(3), whisper.messages.get(3));
+        assertEquals(messages.get(4), whisper.messages.get(4));
+    }
 }