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fastkml/geometry.py

@@ -911,7 +911,7 @@ class InnerBoundaryIs(_XMLObject):
     """Represents the inner boundary of a polygon in KML."""
 
     _default_nsid = config.KML
-    kml_geometry: LinearRing
+    kml_geometry: Optional[LinearRing]
 
     def __init__(
         self,
@@ -932,7 +932,7 @@ def __init__(
         name_spaces : Optional[Dict[str, str]], optional
             The namespace dictionary for the KML element, by default None.
         geometry : Optional[geo.LinearRing], optional
-            The geometrY to be converted to a KML geometry, by default None.
+            The geometry to be converted to a KML geometry, by default None.
         kml_geometry : Optional[LinearRing], optional
             The KML geometry, by default None.
         **kwargs : Any

tests/geometries/boundaries_test.py

@@ -63,7 +63,15 @@ def test_inner_boundary(self) -> None:
             kml_geometry=LinearRing(kml_coordinates=Coordinates(coords=coords)),
         )
 
-        assert inner_boundary.geometry == geo.LinearRing(coords)
+def test_inner_boundary(self) -> None:
+    """Test the init method and __bool__."""
+    coords = ((1, 2), (2, 0), (0, 0), (1, 2))
+    inner_boundary = InnerBoundaryIs(
+        kml_geometry=LinearRing(kml_coordinates=Coordinates(coords=coords)),
+    )
+
+    assert inner_boundary.geometry == geo.LinearRing(coords)
+    assert bool(inner_boundary) is True
         assert inner_boundary.to_string(prettyprint=False).strip() == (
             '<kml:innerBoundaryIs xmlns:kml="http://www.opengis.net/kml/2.2">'
             "<kml:LinearRing><kml:coordinates>"

tests/geometries/polygon_test.py

@@ -180,6 +180,8 @@ def test_empty_polygon(self) -> None:
 
         assert not polygon.geometry
         assert polygon.outer_boundary is not None
+        assert isinstance(polygon.outer_boundary, LinearRing)
+        assert len(polygon.inner_boundaries) == 0
         assert "tessellate>1</" in polygon.to_string()