test_weitere Testfälle hinzugefügt

src/test/java/ChatGUITest.java

@@ -23,6 +23,17 @@ public class ChatGUITest {
         chatGUI.actionPerformed(new TestActionEvent(chatGUI.blue));
         assertEquals(Color.BLUE, chatGUI.outputTextArea.getForeground());
     }
+    @Test
+    public void testSetOutputTextColorBlack() {
+        chatGUI.actionPerformed(new TestActionEvent(chatGUI.black));
+        assertEquals(Color.BLACK, chatGUI.outputTextArea.getForeground());
+    }
+
+    @Test
+    public void testSetOutputTextColorGreen() {
+        chatGUI.actionPerformed(new TestActionEvent(chatGUI.green));
+        assertEquals(Color.GREEN, chatGUI.outputTextArea.getForeground());
+    }
 
 }