diff --git a/src/test/java/ChatGUITest.java b/src/test/java/ChatGUITest.java
index 3afb790..8b06bf4 100644
--- a/src/test/java/ChatGUITest.java
+++ b/src/test/java/ChatGUITest.java
@@ -1,6 +1,7 @@
 import static org.junit.Assert.assertEquals;
 
 import java.awt.Color;
+import java.awt.Font;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -34,6 +35,12 @@ public class ChatGUITest {
         chatGUI.actionPerformed(new TestActionEvent(chatGUI.green));
         assertEquals(Color.GREEN, chatGUI.outputTextArea.getForeground());
     }
+    @Test
+    public void testSetOutputTextFontSizeSmall() {
+        chatGUI.actionPerformed(new TestActionEvent(chatGUI.small));
+        Font expectedFont = chatGUI.outputTextArea.getFont().deriveFont(Font.PLAIN, 12);
+        assertEquals(expectedFont, chatGUI.outputTextArea.getFont());
+    }
 
 }