Refactor 11 more tests to mcrfpy.step() pattern

Converted from Timer-based async to step()-based sync:
- test_simple_callback.py
- test_empty_animation_manager.py
- test_frame_clipping.py
- test_frame_clipping_advanced.py
- test_grid_children.py
- test_color_helpers.py
- test_no_arg_constructors.py
- test_properties_quick.py
- test_simple_drawable.py
- test_python_object_cache.py
- WORKING_automation_test_example.py

Only 4 tests remain with Timer-based patterns (2 are headless detection
tests that may require special handling).

🤖 Generated with Claude Code (https://claude.com/claude-code)

Co-Authored-By: Frack <frack@goblincorps.dev>
Co-Authored-By: Claude <noreply@anthropic.com>

tests/unit/test_no_arg_constructors.py

@@ -2,90 +2,94 @@
 """
 Test that all UI classes can be instantiated without arguments.
 This verifies the fix for requiring arguments even with safe default constructors.
+Refactored to use mcrfpy.step() for synchronous execution.
 """
 
 import mcrfpy
 import sys
+import traceback
 
-def test_ui_constructors(timer, runtime):
-    """Test that UI classes can be instantiated without arguments"""
-    
-    print("Testing UI class instantiation without arguments...")
-    
-    # Test UICaption with no arguments
-    try:
-        caption = mcrfpy.Caption()
-        print("PASS: Caption() - Success")
-        print(f"      Position: ({caption.x}, {caption.y})")
-        print(f"      Text: '{caption.text}'")
-        assert caption.x == 0.0
-        assert caption.y == 0.0
-        assert caption.text == ""
-    except Exception as e:
-        print(f"FAIL: Caption() - {e}")
-        import traceback
-        traceback.print_exc()
-    
-    # Test UIFrame with no arguments
-    try:
-        frame = mcrfpy.Frame()
-        print("PASS: Frame() - Success")
-        print(f"      Position: ({frame.x}, {frame.y})")
-        print(f"      Size: ({frame.w}, {frame.h})")
-        assert frame.x == 0.0
-        assert frame.y == 0.0
-        assert frame.w == 0.0
-        assert frame.h == 0.0
-    except Exception as e:
-        print(f"FAIL: Frame() - {e}")
-        import traceback
-        traceback.print_exc()
-    
-    # Test UIGrid with no arguments
-    try:
-        grid = mcrfpy.Grid()
-        print("PASS: Grid() - Success")
-        print(f"      Grid size: {grid.grid_x} x {grid.grid_y}")
-        print(f"      Position: ({grid.x}, {grid.y})")
-        assert grid.grid_x == 1
-        assert grid.grid_y == 1
-        assert grid.x == 0.0
-        assert grid.y == 0.0
-    except Exception as e:
-        print(f"FAIL: Grid() - {e}")
-        import traceback
-        traceback.print_exc()
-    
-    # Test UIEntity with no arguments
-    try:
-        entity = mcrfpy.Entity()
-        print("PASS: Entity() - Success")
-        print(f"      Position: ({entity.x}, {entity.y})")
-        assert entity.x == 0.0
-        assert entity.y == 0.0
-    except Exception as e:
-        print(f"FAIL: Entity() - {e}")
-        import traceback
-        traceback.print_exc()
-    
-    # Test UISprite with no arguments (if it has a default constructor)
-    try:
-        sprite = mcrfpy.Sprite()
-        print("PASS: Sprite() - Success")
-        print(f"      Position: ({sprite.x}, {sprite.y})")
-        assert sprite.x == 0.0
-        assert sprite.y == 0.0
-    except Exception as e:
-        print(f"FAIL: Sprite() - {e}")
-        # Sprite might still require arguments, which is okay
-    
-    print("\nAll tests complete!")
-    
-    # Exit cleanly
-    sys.exit(0)
-
-# Create a basic scene so the game can start
+# Initialize scene
 test = mcrfpy.Scene("test")
+test.activate()
+mcrfpy.step(0.01)
 
-# Schedule the test to run after game initialization
-test_timer = mcrfpy.Timer("test", test_ui_constructors, 100, once=True)
+print("Testing UI class instantiation without arguments...")
+
+all_pass = True
+
+# Test UICaption with no arguments
+try:
+    caption = mcrfpy.Caption()
+    print("PASS: Caption() - Success")
+    print(f"      Position: ({caption.x}, {caption.y})")
+    print(f"      Text: '{caption.text}'")
+    assert caption.x == 0.0
+    assert caption.y == 0.0
+    assert caption.text == ""
+except Exception as e:
+    print(f"FAIL: Caption() - {e}")
+    traceback.print_exc()
+    all_pass = False
+
+# Test UIFrame with no arguments
+try:
+    frame = mcrfpy.Frame()
+    print("PASS: Frame() - Success")
+    print(f"      Position: ({frame.x}, {frame.y})")
+    print(f"      Size: ({frame.w}, {frame.h})")
+    assert frame.x == 0.0
+    assert frame.y == 0.0
+    assert frame.w == 0.0
+    assert frame.h == 0.0
+except Exception as e:
+    print(f"FAIL: Frame() - {e}")
+    traceback.print_exc()
+    all_pass = False
+
+# Test UIGrid with no arguments
+try:
+    grid = mcrfpy.Grid()
+    print("PASS: Grid() - Success")
+    print(f"      Grid size: {grid.grid_x} x {grid.grid_y}")
+    print(f"      Position: ({grid.x}, {grid.y})")
+    assert grid.grid_x == 1
+    assert grid.grid_y == 1
+    assert grid.x == 0.0
+    assert grid.y == 0.0
+except Exception as e:
+    print(f"FAIL: Grid() - {e}")
+    traceback.print_exc()
+    all_pass = False
+
+# Test UIEntity with no arguments
+try:
+    entity = mcrfpy.Entity()
+    print("PASS: Entity() - Success")
+    print(f"      Position: ({entity.x}, {entity.y})")
+    assert entity.x == 0.0
+    assert entity.y == 0.0
+except Exception as e:
+    print(f"FAIL: Entity() - {e}")
+    traceback.print_exc()
+    all_pass = False
+
+# Test UISprite with no arguments (if it has a default constructor)
+try:
+    sprite = mcrfpy.Sprite()
+    print("PASS: Sprite() - Success")
+    print(f"      Position: ({sprite.x}, {sprite.y})")
+    assert sprite.x == 0.0
+    assert sprite.y == 0.0
+except Exception as e:
+    print(f"FAIL: Sprite() - {e}")
+    # Sprite might still require arguments, which is okay
+
+print("\nAll tests complete!")
+
+if all_pass:
+    print("PASS")
+    sys.exit(0)
+else:
+    print("FAIL")
+    sys.exit(1)