add comments to tests

Author: d-v-b

tests/test_data_api/test_multiscales.py

@@ -12,6 +12,9 @@
     "json_example", MULTISCALES_EXAMPLES.items(), ids=lambda v: v[0]
 )
 def test_multiscales_rt(json_example: tuple[str, dict[str, object]]) -> None:
+    """
+    Test that the multiscales metadata round-trips input JSON
+    """
     _, value = json_example
     value_tup = tuplify_json(value)
     multi_json = value_tup["attributes"]["multiscales"]
@@ -22,6 +25,10 @@ def test_multiscales_rt(json_example: tuple[str, dict[str, object]]) -> None:
 
 
 def test_scale_level_from_group() -> None:
+    """
+    Test that the ScaleLevel metadata rejects a dict with
+    from_group but no "scale" attribute
+    """
     meta = {"group": "1", "from_group": "0"}
     with pytest.raises(ValidationError):
         ScaleLevel(**meta)