Repository: MyreMylar/pygame_gui (python)

Issue:
Sandbox-sensitive test
**Describe the bug**
A clear and concise description of what the bug is.

This part of the pytest test `TestUIUIFileDialog.test_process_event`:

https://github.com/MyreMylar/pygame_gui/blob/cc1c41da88f0556012ace7256c897f07aa8b39e9/tests/test_windows/test_ui_file_dialog.py#L399-L404

fails with 

```
>       assert Path(file_dialog.current_directory_path).name == ''
E       AssertionError: assert 'images' == ''
E         
E         + images
```

when ran in a nix sandbox on macos. I think it assumes `/` has the `x` permission?

uncovered in https://github.com/NixOS/nixpkgs/pull/352150#issuecomment-2445832850

**To Reproduce**
Steps to reproduce the behaviour:

`nix build --system aarch64-darwin github:nixos/nixpkgs/refs/pull/352150/head#python311Packages.pygame-gui --check`

**Expected behaviour**
build success

**Platform and software (please complete the following information):**
 - OS: nixos 24.05
 - Pygame GUI version: 0.6.2
 - Pygame version: 2.5.2 CE edition (also reproduced on 2.5.1)


Pull request description:
Disable file path handling nuance test on non-windows
fixes #644

Patch:
diff --git a/pygame_gui/core/ui_appearance_theme.py b/pygame_gui/core/ui_appearance_theme.py
index 2fe3d84..700e0bb 100644
--- a/pygame_gui/core/ui_appearance_theme.py
+++ b/pygame_gui/core/ui_appearance_theme.py
@@ -103,7 +103,7 @@ class UIAppearanceTheme(IUIAppearanceThemeInterface):
             self.need_to_rebuild_data_manually_changed = False
             return True
         return False
-
+    
     @staticmethod
     def _json_to_dict(json_data):
         if isinstance(json_data, dict):
@@ -574,19 +574,16 @@ class UIAppearanceTheme(IUIAppearanceThemeInterface):
 
         :return IGUIFontInterface: An interface to a pygame font object wrapper.
         """
-        font = None
-        
+        # set the default font as the final fall back
+        font = self.font_dict.get_default_font()
+
         for combined_element_id in combined_element_ids:
             if combined_element_id in self.ele_font_res:
                 if self._locale in self.ele_font_res[combined_element_id]:
-                    font = self.ele_font_res[combined_element_id][self._locale].loaded_font
+                    return self.ele_font_res[combined_element_id][self._locale].loaded_font
                 else:
-                    font = self.ele_font_res[combined_element_id]['en'].loaded_font
-                break
+                    return self.ele_font_res[combined_element_id]['en'].loaded_font
 
-        # set the default font as the final fall back
-        if font is None:
-            font = self.font_dict.get_default_font()
         return font
 
     def get_misc_data(self, misc_data_id: str, combined_element_ids: List[str]) -> Union[str, Dict]:
@@ -770,7 +767,7 @@ class UIAppearanceTheme(IUIAppearanceThemeInterface):
                     self._load_element_font_data_from_theme(file_dict,
                                                             element_name)
 
-            if data_type == 'colours' or data_type == 'colors':
+            if data_type == 'colours':
                 self._load_element_colour_data_from_theme(data_type,
                                                           element_name,
                                                           element_theming)
@@ -1048,7 +1045,7 @@ class UIAppearanceTheme(IUIAppearanceThemeInterface):
         :param theme_dict: The data dictionary from the theming file to load data from.
         """
         for data_type in theme_dict['defaults']:
-            if data_type == 'colours' or data_type == 'colors':
+            if data_type == 'colours':
                 colours_dict = theme_dict['defaults'][data_type]
                 for colour_key in colours_dict:
                     colour = self._load_colour_or_gradient_from_theme(colours_dict,
diff --git a/pygame_gui/elements/ui_image.py b/pygame_gui/elements/ui_image.py
index 22abbf4..232893e 100644
--- a/pygame_gui/elements/ui_image.py
+++ b/pygame_gui/elements/ui_image.py
@@ -37,8 +37,7 @@ class UIImage(UIElement):
                  anchors: Optional[Dict[str, Union[str, UIElement]]] = None,
                  visible: int = 1,
                  *,
-                 starting_height: int = 1,
-                 scale_func=pygame.transform.smoothscale):
+                 starting_height: int = 1,):
 
         super().__init__(relative_rect, manager, container,
                          starting_height=starting_height,
@@ -51,7 +50,7 @@ class UIImage(UIElement):
 
         self.original_image = None
 
-        self.set_image(image_surface, image_is_alpha_premultiplied, scale_func)
+        self.set_image(image_surface, image_is_alpha_premultiplied)
         self.rebuild_from_changed_theme_data()
 
     def rebuild_from_changed_theme_data(self):
@@ -80,8 +79,7 @@ class UIImage(UIElement):
 
     def set_image(self,
                   new_image: Union[pygame.surface.Surface, None],
-                  image_is_alpha_premultiplied: bool = False,
-                  scale_func = pygame.transform.smoothscale) -> None:
+                  image_is_alpha_premultiplied: bool = False) -> None:
         """
         Allows users to change the image displayed on a UIImage element during run time, without recreating
         the element.
@@ -99,6 +97,6 @@ class UIImage(UIElement):
         if (image_surface.get_width() != self.rect.width or
                 image_surface.get_height() != self.rect.height):
             self.original_image = image_surface
-            self._set_image(scale_func(self.original_image, self.rect.size))
+            self._set_image(pygame.transform.smoothscale(self.original_image, self.rect.size))
         else:
             self._set_image(image_surface)


Test patch:
diff --git a/tests/test_core/test_ui_appearance_theme.py b/tests/test_core/test_ui_appearance_theme.py
index 3920cbe..2d2c206 100644
--- a/tests/test_core/test_ui_appearance_theme.py
+++ b/tests/test_core/test_ui_appearance_theme.py
@@ -192,11 +192,8 @@ class TestUIAppearanceTheme:
         assert shadow_width == '0'
 
     def test_get_font(self, _init_pygame, _display_surface_return_none: None):
-        resource_loader = BlockingThreadedResourceLoader()
-        theme = UIAppearanceTheme(resource_loader, locale='nonsense_locale')
+        theme = UIAppearanceTheme(BlockingThreadedResourceLoader(), locale='nonsense_locale')
         theme.load_theme(os.path.join("tests", "data", "themes", "ui_button_non_default.json"))
-        resource_loader.start()
-        resource_loader.update()
         assert theme.get_font_info(['button']) == theme.ui_element_fonts_info['button']['en']
         assert theme.get_font(['button']) == theme.ele_font_res['button']['en'].loaded_font
 
diff --git a/tests/test_windows/test_ui_file_dialog.py b/tests/test_windows/test_ui_file_dialog.py
index abdbe9c..8f87048 100644
--- a/tests/test_windows/test_ui_file_dialog.py
+++ b/tests/test_windows/test_ui_file_dialog.py
@@ -1,3 +1,4 @@
+import platform
 from pathlib import Path
 
 import pygame
@@ -396,12 +397,13 @@ class TestUIUIFileDialog:
 
         assert Path(file_dialog.current_directory_path).name == 'images'
 
-        file_dialog.file_path_text_line.set_text('/')
+        if platform.system().upper() == 'WINDOWS':
+            file_dialog.file_path_text_line.set_text('/')
 
-        file_dialog.process_event(pygame.event.Event(UI_TEXT_ENTRY_FINISHED,
-                                                     {'ui_element': file_dialog.file_path_text_line}))
+            file_dialog.process_event(pygame.event.Event(UI_TEXT_ENTRY_FINISHED,
+                                                         {'ui_element': file_dialog.file_path_text_line}))
 
-        assert Path(file_dialog.current_directory_path).name == ''
+            assert Path(file_dialog.current_directory_path).name == ''
 
     def test_show(self, _init_pygame, default_ui_manager, _display_surface_return_none):
         file_dialog = UIFileDialog(rect=pygame.Rect(100, 100, 440, 500),