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import pytest
from pydantic import AnyHttpUrl
from fastmcp import FastMCP
from fastmcp.server.auth import AccessToken, RemoteAuthProvider, TokenVerifier
class SimpleTokenVerifier(TokenVerifier):
"""Simple token verifier for testing."""
def __init__(self, valid_tokens: dict[str, AccessToken] | None = None):
super().__init__()
self.valid_tokens = valid_tokens or {}
async def verify_token(self, token: str) -> AccessToken | None:
return self.valid_tokens.get(token)
class TestRemoteAuthProvider:
"""Test suite for RemoteAuthProvider."""
def test_init(self):
"""Test RemoteAuthProvider initialization."""
token_verifier = SimpleTokenVerifier()
auth_servers = [AnyHttpUrl("https://auth.example.com")]
provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=auth_servers,
resource_server_url="https://api.example.com",
)
assert provider.token_verifier is token_verifier
assert provider.authorization_servers == auth_servers
assert provider.resource_server_url == AnyHttpUrl("https://api.example.com")
async def test_verify_token_delegates_to_verifier(self):
"""Test that verify_token delegates to the token verifier."""
access_token = AccessToken(
token="valid_token", client_id="test-client", scopes=[]
)
token_verifier = SimpleTokenVerifier({"valid_token": access_token})
provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com",
)
# Valid token
result = await provider.verify_token("valid_token")
assert result is access_token
# Invalid token
result = await provider.verify_token("invalid_token")
assert result is None
def test_get_routes_creates_protected_resource_routes(self):
"""Test that get_routes creates protected resource routes."""
token_verifier = SimpleTokenVerifier()
auth_servers = [AnyHttpUrl("https://auth.example.com")]
provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=auth_servers,
resource_server_url="https://api.example.com",
)
routes = provider.get_routes()
assert len(routes) == 1
# Check that the route is the OAuth protected resource metadata endpoint
route = routes[0]
assert route.path == "/.well-known/oauth-protected-resource"
assert route.methods is not None
assert "GET" in route.methods
def test_get_resource_metadata_url(self):
"""Test get_resource_metadata_url returns correct URL."""
provider = RemoteAuthProvider(
token_verifier=SimpleTokenVerifier(),
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com",
)
metadata_url = provider.get_resource_metadata_url()
assert metadata_url == AnyHttpUrl(
"https://api.example.com/.well-known/oauth-protected-resource"
)
def test_get_resource_metadata_url_handles_trailing_slash(self):
"""Test get_resource_metadata_url handles trailing slash correctly."""
provider = RemoteAuthProvider(
token_verifier=SimpleTokenVerifier(),
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com/",
)
metadata_url = provider.get_resource_metadata_url()
assert metadata_url == AnyHttpUrl(
"https://api.example.com/.well-known/oauth-protected-resource"
)
class TestRemoteAuthProviderIntegration:
"""Integration tests for RemoteAuthProvider with FastMCP server."""
async def test_protected_resource_metadata_endpoint_status_code(self):
"""Test that the protected resource metadata endpoint returns 200."""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com/mcp",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://api.example.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
assert response.status_code == 200
async def test_protected_resource_metadata_endpoint_resource_field(self):
"""Test that the protected resource metadata endpoint returns correct resource field."""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com/mcp",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://api.example.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
data = response.json()
# This is the key test - ensure resource field contains the full MCP URL
assert data["resource"] == "https://api.example.com/mcp"
async def test_protected_resource_metadata_endpoint_authorization_servers_field(
self,
):
"""Test that the protected resource metadata endpoint returns correct authorization_servers field."""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com/mcp",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://api.example.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
data = response.json()
assert data["authorization_servers"] == ["https://auth.example.com/"]
@pytest.mark.parametrize(
"resource_server_url,expected_resource",
[
("https://api.example.com", "https://api.example.com/"),
("https://api.example.com/", "https://api.example.com/"),
("https://api.example.com/mcp", "https://api.example.com/mcp"),
("https://api.example.com/mcp/", "https://api.example.com/mcp/"),
],
)
async def test_resource_server_url_configurations(
self, resource_server_url: str, expected_resource: str
):
"""Test different resource_server_url configurations."""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url=resource_server_url,
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://test.example.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
assert response.status_code == 200
data = response.json()
assert data["resource"] == expected_resource
async def test_multiple_authorization_servers_resource_field(self):
"""Test resource field with multiple authorization servers."""
token_verifier = SimpleTokenVerifier()
auth_servers = [
AnyHttpUrl("https://auth1.example.com"),
AnyHttpUrl("https://auth2.example.com"),
]
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=auth_servers,
resource_server_url="https://api.example.com/mcp",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://api.example.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
data = response.json()
assert data["resource"] == "https://api.example.com/mcp"
async def test_multiple_authorization_servers_list(self):
"""Test authorization_servers field with multiple authorization servers."""
token_verifier = SimpleTokenVerifier()
auth_servers = [
AnyHttpUrl("https://auth1.example.com"),
AnyHttpUrl("https://auth2.example.com"),
]
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=auth_servers,
resource_server_url="https://api.example.com/mcp",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://api.example.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
data = response.json()
assert set(data["authorization_servers"]) == {
"https://auth1.example.com/",
"https://auth2.example.com/",
}
async def test_token_verification_with_valid_auth_succeeds(self):
"""Test that requests with valid auth token succeed."""
# Note: This test focuses on HTTP-level authentication behavior
# For the RemoteAuthProvider, the key test is that the OAuth discovery
# endpoint correctly reports the resource server URL, which is tested above
# This is primarily testing that the token verifier integration works
access_token = AccessToken(
token="valid_token", client_id="test-client", scopes=[]
)
token_verifier = SimpleTokenVerifier({"valid_token": access_token})
provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com/mcp",
)
# Test that the provider correctly delegates to the token verifier
result = await provider.verify_token("valid_token")
assert result is access_token
result = await provider.verify_token("invalid_token")
assert result is None
async def test_token_verification_with_invalid_auth_fails(self):
"""Test that the provider correctly rejects invalid tokens."""
access_token = AccessToken(
token="valid_token", client_id="test-client", scopes=[]
)
token_verifier = SimpleTokenVerifier({"valid_token": access_token})
provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://auth.example.com")],
resource_server_url="https://api.example.com/mcp",
)
# Test that invalid tokens are rejected
result = await provider.verify_token("invalid_token")
assert result is None
async def test_issue_1348_oauth_discovery_returns_correct_url(self):
"""Test that RemoteAuthProvider correctly returns the full MCP endpoint URL.
This test confirms that RemoteAuthProvider works correctly and returns
the exact resource_server_url specified, including full paths like /mcp/.
"""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://accounts.google.com")],
resource_server_url="https://my-server.com/mcp/",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://my-server.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
assert response.status_code == 200
data = response.json()
# The RemoteAuthProvider correctly returns the full MCP endpoint URL
assert data["resource"] == "https://my-server.com/mcp/"
assert data["authorization_servers"] == ["https://accounts.google.com/"]
async def test_resource_name_field(self):
"""Test that RemoteAuthProvider correctly returns the resource_name.
This test confirms that RemoteAuthProvider works correctly and returns
the exact resource_name specified.
"""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://accounts.google.com")],
resource_server_url="https://my-server.com/mcp/",
resource_name="My Test Resource",
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://my-server.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
assert response.status_code == 200
data = response.json()
# The RemoteAuthProvider correctly returns the resource_name
assert data["resource_name"] == "My Test Resource"
async def test_resource_documentation_field(self):
"""Test that RemoteAuthProvider correctly returns the resource_documentation.
This test confirms that RemoteAuthProvider works correctly and returns
the exact resource_documentation specified.
"""
token_verifier = SimpleTokenVerifier()
auth_provider = RemoteAuthProvider(
token_verifier=token_verifier,
authorization_servers=[AnyHttpUrl("https://accounts.google.com")],
resource_server_url="https://my-server.com/mcp/",
resource_documentation=AnyHttpUrl(
"https://doc.my-server.com/resource-docs"
),
)
mcp = FastMCP("test-server", auth=auth_provider)
mcp_http_app = mcp.http_app()
async with httpx.AsyncClient(
transport=httpx.ASGITransport(app=mcp_http_app),
base_url="https://my-server.com",
) as client:
response = await client.get("/.well-known/oauth-protected-resource")
assert response.status_code == 200
data = response.json()
# The RemoteAuthProvider correctly returns the resource_documentation
assert (
data["resource_documentation"]
== "https://doc.my-server.com/resource-docs"
)
|