tests: Added tileset_grid test

tests/test_data/tilesets/image_grid/expected.py

@@ -0,0 +1,19 @@
+from pathlib import Path
+
+from pytiled_parser import tileset
+
+EXPECTED = tileset.TileSet(
+    columns=8,
+    image=Path("../../images/tmw_desert_spacing.png"),
+    image_height=199,
+    image_width=265,
+    margin=1,
+    spacing=1,
+    name="tile_set_image",
+    tile_count=48,
+    tiled_version="1.3.5",
+    tile_height=32,
+    tile_width=32,
+    version=1.2,
+    grid=tileset.Grid(orientation="isometric", width=32, height=32),
+)

tests/test_data/tilesets/image_grid/tileset.json

@@ -0,0 +1,26 @@
+{
+  "columns": 8,
+  "editorsettings": {
+    "export": {
+      "format": "",
+      "target": "../image"
+    }
+  },
+  "grid": {
+    "height": 32,
+    "orientation": "isometric",
+    "width": 32
+  },
+  "image": "../../images/tmw_desert_spacing.png",
+  "imageheight": 199,
+  "imagewidth": 265,
+  "margin": 1,
+  "name": "tile_set_image",
+  "spacing": 1,
+  "tilecount": 48,
+  "tiledversion": "1.3.5",
+  "tileheight": 32,
+  "tilewidth": 32,
+  "type": "tileset",
+  "version": 1.2
+}

tests/test_tileset.py

@@ -16,6 +16,7 @@ TILE_SETS = TEST_DATA / "tilesets"
 ALL_TILESET_DIRS = [
     TILE_SETS / "image",
     TILE_SETS / "image_background_color",
+    TILE_SETS / "image_grid",
     TILE_SETS / "image_properties",
     TILE_SETS / "image_transparent_color",
     TILE_SETS / "image_tile_offset",