Some clean up and added interactable images.

tests/concrete/test_concrete_functional.py

@@ -442,28 +442,37 @@ class TestInteractionCallbacks(unittest.TestCase):
         self.font = Font(font_size=12, colour=(0, 0, 0))
         self.mock_draw = Mock()
         self.callback_result = "callback_executed"
-        self.callback = Mock(return_value=self.callback_result)
-    
+
+        # Link callback: receives (location, point, **params)
+        def link_callback(location, point, **params):
+            return "callback_executed"
+        self.link_callback = link_callback
+
+        # Button callback: receives (point, **params)
+        def button_callback(point, **params):
+            return "callback_executed"
+        self.button_callback = button_callback
+
     def test_link_text_interaction(self):
         """Test that LinkText properly handles interaction"""
         # Use a FUNCTION link type which calls the callback, not INTERNAL which returns location
-        link = Link("test_function", LinkType.FUNCTION, self.callback)
+        link = Link("test_function", LinkType.FUNCTION, self.link_callback)
         renderable = LinkText(link, "Test Link", self.font, self.mock_draw)
-        
+
         # Simulate interaction
         result = renderable.interact(np.array([10, 10]))
-        
+
         # Should execute the link's callback
         self.assertEqual(result, self.callback_result)
-    
+
     def test_button_text_interaction(self):
         """Test that ButtonText properly handles interaction"""
-        button = Button("Test Button", self.callback)
+        button = Button("Test Button", self.button_callback)
         renderable = ButtonText(button, self.font, self.mock_draw)
-        
+
         # Simulate interaction
         result = renderable.interact(np.array([10, 10]))
-        
+
         # Should execute the button's callback
         self.assertEqual(result, self.callback_result)