Add option to override group in create_attribute

src/fastcs_odin/util.py

@@ -274,17 +274,18 @@ def unpack_status_arrays(parameters: list[OdinParameter], uris: list[list[str]])
     return parameters
 
 
-def create_attribute(parameter: OdinParameter, api_prefix: str):
+def create_attribute(
+    parameter: OdinParameter, api_prefix: str, group: str | None = None
+):
     """Create ``Attribute`` from ``OdinParameter``."""
     if parameter.metadata.writeable:
         attr_class = AttrRW
     else:
         attr_class = AttrR
 
-    if len(parameter.path) >= 2:
-        group = snake_to_pascal(f"{parameter.path[0]}")
-    else:
-        group = None
+    if group is None:
+        if len(parameter.path) >= 2:
+            group = snake_to_pascal(f"{parameter.path[0]}")
 
     return attr_class(
         parameter.metadata.fastcs_datatype,

tests/test_util.py

@@ -1,4 +1,13 @@
-from fastcs_odin.util import create_odin_parameters
+import pytest
+from fastcs.attributes import AttrR, AttrRW
+from fastcs.datatypes import Int
+
+from fastcs_odin.util import (
+    OdinParameter,
+    OdinParameterMetadata,
+    create_attribute,
+    create_odin_parameters,
+)
 
 
 def test_create_parameters():
@@ -15,3 +24,40 @@ def test_create_parameters():
     }
     parameters = create_odin_parameters(data)
     assert len(parameters) == 0
+
+
+@pytest.mark.parametrize(
+    "metadata, uri, expected_attr, group",
+    [
+        (
+            OdinParameterMetadata(value=0, type="int", writeable=False),
+            ["name"],
+            AttrR(Int(), io_ref=None, group=None),
+            None,
+        ),
+        (
+            OdinParameterMetadata(value=0, type="int", writeable=True),
+            ["name"],
+            AttrRW(Int(), io_ref=None, group=None),
+            None,
+        ),
+        (
+            OdinParameterMetadata(value=0, type="int", writeable=False),
+            ["my_group", "name"],
+            AttrR(Int(), io_ref=None, group="MyGroup"),
+            None,
+        ),
+        (
+            OdinParameterMetadata(value=0, type="int", writeable=True),
+            ["my_group", "name"],
+            AttrRW(Int(), io_ref=None, group="MyOtherGroup"),
+            "MyOtherGroup",
+        ),
+    ],
+)
+def test_create_parameters_groups(metadata, uri, expected_attr, group):
+    param = OdinParameter(uri, metadata)
+
+    attr = create_attribute(param, "test", group=group)
+
+    assert attr.group == expected_attr.group