remove duplicate test cases

docs/working_with_kml.rst

@@ -16,7 +16,9 @@ Open a KML file:
 
     >>> k = KML.parse("docs/Document-clean.kml")
 
-Extract all placemarks and print their geometries:
+Extract all placemarks and print their geometries.
+The function ``find_all`` recursively searches a KML document for elements of a specific
+type and returns an iterator of all matching elements found in the document tree.
 
 .. code-block:: pycon
 
@@ -39,7 +41,8 @@ Extract all placemarks and print their geometries:
 
 
 
-You can also define what you are looking for by specifying additional parameters:
+``find_all`` can also search for arbitrary elements by their attributes, by passing the
+attribute name and value as keyword arguments:
 
 
 .. code-block:: pycon

fastkml/utils.py

@@ -50,7 +50,7 @@ def find_all(
     ):
         yield obj
     try:
-        attrs = [attr for attr in obj.__dict__ if not attr.startswith("_")]
+        attrs = (attr for attr in obj.__dict__ if not attr.startswith("_"))
     except AttributeError:
         return
     for attr_name in attrs:

tests/utils_test.py

@@ -72,27 +72,6 @@ def __init__(self, a: A, b: B, c: C) -> None:
         result = list(find_all(d1, of_type=A, x=2))
         assert not result
 
-        result = list(find_all(d1, of_type=A, x=1))
-        assert result == [a1]
-
-        result = list(find_all(d1, of_type=A, x=2))
-        assert not result
-
-        result = list(find_all(d1, of_type=A, x=1))
-        assert result == [a1]
-
-        result = list(find_all(d1, of_type=A, x=2))
-        assert not result
-
-        result = list(find_all(d1, of_type=A, x=1))
-        assert result == [a1]
-
-        result = list(find_all(d1, of_type=A, x=2))
-        assert not result
-
-        result = list(find_all(d1, of_type=A, x=1))
-        assert result == [a1]
-
         result = list(find_all(d2, of_type=A, x=2))
         assert result == [a2]