TST: save test output files to tmp directory (#71)

README.md

@@ -55,7 +55,7 @@ a feeling of how the output STL will look like:
 ```
 dem2stl --demo
 ```
-If you have your tiff file ready, you may run something like
+If you have your tiff file at hand, you may run something like
 ```
 dem2stl --input your_file.tiff --output output.stl --model-size 200 --z-offset 3.0 --z-scale 1.5
 ```

tests/test_mapa.py

@@ -195,9 +195,10 @@ def test_mapa__index_error(output_file) -> None:
 @pytest.mark.parametrize("compress", (False, True))
 def test_mapa__split_area_into_tiles__success(hawaii_bbox, tmp_path, compress) -> None:
     size = 100
+    output_path = Path(tmp_path, "foo")
     output = convert_bbox_to_stl(
         bbox_geometry=hawaii_bbox,
-        output_file="foo",
+        output_file=output_path,
         split_area_in_tiles="2x2",
         model_size=size,
         cut_to_format_ratio=1.0,