Path finder returns default server

Author: p1c2u

openapi_core/templating/paths/finders.py

@@ -101,8 +101,10 @@ def _get_servers_iter(
             servers = (
                 path.get("servers", None)
                 or operation.get("servers", None)
-                or self.spec.get("servers", [{"url": "/"}])
+                or self.spec.get("servers", None)
             )
+            if not servers:
+                servers = [SchemaPath.from_dict({"url": "/"})]
             for server in servers:
                 server_url_pattern = name.rsplit(path_result.resolved, 1)[0]
                 server_url = server["url"]

tests/unit/templating/test_paths_finders.py

@@ -172,15 +172,24 @@ class BaseTestServerNotFound:
     def servers(self):
         return []
 
-    @pytest.mark.xfail(
-        reason="returns default server",
-    )
-    def test_raises(self, finder):
+    def test_returns_default_server(self, finder, spec):
         method = "get"
         full_url = "http://petstore.swagger.io/resource"
 
-        with pytest.raises(ServerNotFound):
-            finder.find(method, full_url)
+        result = finder.find(method, full_url)
+
+        path = spec / "paths" / self.path_name
+        operation = spec / "paths" / self.path_name / method
+        server = SchemaPath.from_dict({"url": "/"})
+        path_result = TemplateResult(self.path_name, {})
+        server_result = TemplateResult("/", {})
+        assert result == (
+            path,
+            operation,
+            server,
+            path_result,
+            server_result,
+        )
 
 
 class BaseTestOperationNotFound: