Implement trimming whitespace for named args in cucumber expression

Author: jsa34

python/cucumber_expressions/expression.py

@@ -105,7 +105,7 @@ def parse_parameter_name(
     ) -> Tuple[Optional[str], Optional[ParameterType]]:
         """Helper function to parse the parameter name and return group_name and parameter_type."""
         if ":" in name:
-            group_name, parameter_type_name = name.split(":")
+            group_name, parameter_type_name = [part.strip() for part in name.split(":")]
             parameter_type = self.parameter_type_registry.lookup_by_type_name(
                 parameter_type_name
             )

python/tests/test_expression.py

@@ -55,6 +55,14 @@ def test_documents_match_arguments_with_names(self):
         values = match("I have {cuke_count:int} cuke(s)", "I have 7 cukes")
         assert values[0] == (7, "cuke_count")
 
+    def test_documents_match_arguments_with_names_and_spaces(self):
+        values = match(
+            "I have {  cuke_count : int  } cuke(s) and {gherkin_count: int} gherkin(s)",
+            "I have 7 cukes and 4 gherkins",
+        )
+        assert values[0] == (7, "cuke_count")
+        assert values[1] == (4, "gherkin_count")
+
     def test_matches_float(self):
         assert match("{float}", "") is None
         assert match("{float}", ".") is None