Consolidate prefix logic

tests/server/test_server.py

@@ -9,7 +9,6 @@ from fastmcp.exceptions import NotFoundError
 from fastmcp.prompts.prompt import FunctionPrompt, Prompt
 from fastmcp.resources import Resource, ResourceTemplate
 from fastmcp.server.server import (
-    MountedServer,
     add_resource_prefix,
     has_resource_prefix,
     remove_resource_prefix,
@@ -1183,16 +1182,23 @@ class TestResourcePrefixMounting:
     async def test_mounted_server_matching_and_stripping(
         self, uri, prefix, expected_match, expected_strip
     ):
-        """Test that MountedServer correctly matches and strips resource prefixes."""
-        # Create a basic server to mount
+        """Test that resource prefix utility functions correctly match and strip resource prefixes."""
+        from fastmcp.server.server import has_resource_prefix, remove_resource_prefix
+
+        # Create a basic server to get the default resource prefix format
         server = FastMCP()
-        mounted = MountedServer(prefix=prefix, server=server)
 
         # Test matching
-        assert mounted.match_resource(uri) == expected_match
+        assert (
+            has_resource_prefix(uri, prefix, server.resource_prefix_format)
+            == expected_match
+        )
 
         # Test stripping
-        assert mounted.strip_resource_prefix(uri) == expected_strip
+        assert (
+            remove_resource_prefix(uri, prefix, server.resource_prefix_format)
+            == expected_strip
+        )
 
     async def test_import_server_with_new_prefix_format(self):
         """Test that import_server correctly uses the new prefix format."""