new sprite testing functions including regex based schema tests and sprite loading

triple-dungeon/tests.py

@@ -26,14 +26,56 @@ class TestGame:
         game = Game()
         game.setup()
         # test for 100 frames
-        game.test(100)
+        game.test(50)
 
 
 class TestSprites:
     """
     Tests the Sprite classes as well as the available sprites.
     """
-    pass
+
+    @pytest.fixture
+    def sprites(self) -> list:
+        """
+        Returns a list of absolute paths to sprites found in the images folder.
+
+        :return: List of absolute paths to sprites
+        """
+
+        import os
+        BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+        IMAGE_DIR = os.path.join(BASE_DIR, 'resources', 'images')
+
+        return [[
+            os.path.join(IMAGE_DIR, file) for file in os.listdir(os.path.join(IMAGE_DIR, folder))
+        ] for folder in os.listdir(IMAGE_DIR)]
+
+    @pytest.fixture
+    def patterns(self) -> list:
+        import re
+        return list(map(re.compile,
+                            [r'\w+_(?:\w+_)?\d+\.(?:jp(?:eg|e|g)|png)'
+                             r'\w+\d+\.(?:jp(?:eg|e|g)|png)',
+                             r'\w+_tile\.(?:jp(?:eg|e|g)|png)']
+                            ))
+
+    def test_sprite_schema(self, sprites, patterns) -> None:
+        """
+        Tests that all sprites follow the naming conventions.
+        """
+        import os
+
+        for sprite in map(os.path.basename, sprites):
+            assert any(pattern.match(pattern, sprite) for pattern in patterns)
+
+    def test_sprite_loads(self, sprites) -> None:
+        """
+        Tests that all sprites can be loaded by the arcade framework.
+        """
+        import arcade
+
+        for sprite in sprites:
+            _sprite = arcade.Sprite(sprite)
 
 
 class TestLevels: