fixup: coverage, more ci

Author: mcous

.github/workflows/ci.yml

@@ -14,8 +14,15 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                os: [ubuntu-22.04, windows-latest, macos-latest]
-                python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
+                os: [ubuntu-latest, windows-latest, macos-latest]
+                python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+                include:
+                    - os: ubuntu-22.04
+                      python-version: "3.7"
+                    - os: windows-latest
+                      python-version: "3.7"
+                    - os: ubuntu-22.04
+                      python-version: "3.7"
         steps:
             - name: "Check out repository"
               uses: actions/checkout@v4

tests/fixtures.py

@@ -58,6 +58,11 @@ def optional_child(self) -> Optional[SomeClass]:
         """Get the child instance."""
         raise NotImplementedError()
 
+    @property
+    def union_none_child(self) -> Union[None, SomeClass]:
+        """Get the child instance."""
+        raise NotImplementedError()
+
     @property
     def union_child(self) -> Union[SomeClass, "SomeAsyncClass"]:
         """Get the child instance."""

tests/test_spy_core.py

@@ -470,6 +470,12 @@ def test_warn_if_spec_does_not_have_method() -> None:
         parent = nested_class_subject.create_child_core("optional_child", False)
         parent.create_child_core("primitive_property", False)
 
+    # property access should be allowed through None unions
+    with warnings.catch_warnings():
+        warnings.simplefilter("error")
+        parent = nested_class_subject.create_child_core("union_none_child", False)
+        parent.create_child_core("primitive_property", False)
+
     # property access should not be checked through unions
     with warnings.catch_warnings():
         warnings.simplefilter("error")
@@ -494,3 +500,10 @@ def test_warn_if_spec_does_not_have_method() -> None:
     ):
         parent = nested_class_subject.create_child_core("optional_child", False)
         parent.create_child_core("this_is_wrong", False)
+
+    # incorrect nested property usage should warn
+    with pytest.warns(
+        MissingSpecAttributeWarning, match="has no attribute 'this_is_wrong'"
+    ):
+        parent = nested_class_subject.create_child_core("union_none_child", False)
+        parent.create_child_core("this_is_wrong", False)