Add test for ProtectedResourceMetadataParsing (#1236)

Co-authored-by: Paul Carleton <paulcarletonjr@gmail.com>
Co-authored-by: Marcelo Trylesinski <marcelotryle@gmail.com>
Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com>

tests/server/auth/test_protected_resource.py

@@ -0,0 +1,52 @@
+"""
+Integration tests for MCP Oauth Protected Resource.
+"""
+
+import httpx
+import pytest
+from inline_snapshot import snapshot
+from pydantic import AnyHttpUrl
+from starlette.applications import Starlette
+
+from mcp.server.auth.routes import create_protected_resource_routes
+
+
+@pytest.fixture
+def test_app():
+    """Fixture to create protected resource routes for testing."""
+
+    # Create the protected resource routes
+    protected_resource_routes = create_protected_resource_routes(
+        resource_url=AnyHttpUrl("https://example.com/resource"),
+        authorization_servers=[AnyHttpUrl("https://auth.example.com/authorization")],
+        scopes_supported=["read", "write"],
+        resource_name="Example Resource",
+        resource_documentation=AnyHttpUrl("https://docs.example.com/resource"),
+    )
+
+    app = Starlette(routes=protected_resource_routes)
+    return app
+
+
+@pytest.fixture
+async def test_client(test_app: Starlette):
+    """Fixture to create an HTTP client for the protected resource app."""
+    async with httpx.AsyncClient(transport=httpx.ASGITransport(app=test_app), base_url="https://mcptest.com") as client:
+        yield client
+
+
+@pytest.mark.anyio
+async def test_metadata_endpoint(test_client: httpx.AsyncClient):
+    """Test the OAuth 2.0 Protected Resource metadata endpoint."""
+
+    response = await test_client.get("/.well-known/oauth-protected-resource")
+    assert response.json() == snapshot(
+        {
+            "resource": "https://example.com/resource",
+            "authorization_servers": ["https://auth.example.com/authorization"],
+            "scopes_supported": ["read", "write"],
+            "resource_name": "Example Resource",
+            "resource_documentation": "https://docs.example.com/resource",
+            "bearer_methods_supported": ["header"],
+        }
+    )