625 lines
24 KiB
Python
625 lines
24 KiB
Python
from __future__ import annotations
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import contextlib
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import inspect
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import json
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import math
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import warnings
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from collections.abc import Awaitable, Callable, Generator, Iterable, Mapping, Sequence
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from concurrent.futures import Future, wait as wait_futures
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from contextlib import AbstractContextManager
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from types import GeneratorType
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from typing import TYPE_CHECKING, Any, Literal, Self, TypedDict, TypeGuard, cast
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from urllib.parse import unquote, urljoin
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import anyio
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import anyio.abc
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import anyio.from_thread
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from anyio.streams.stapled import StapledObjectStream
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from starlette._utils import is_async_callable
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from starlette.exceptions import StarletteDeprecationWarning
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from starlette.types import ASGIApp, Message, Receive, Scope, Send
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from starlette.websockets import WebSocketDisconnect
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if TYPE_CHECKING:
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import httpx2 as httpx
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else:
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try:
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import httpx2 as httpx
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except ModuleNotFoundError: # pragma: no cover
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try:
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import httpx
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except ModuleNotFoundError:
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raise RuntimeError(
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"The starlette.testclient module requires the httpx2 package to be installed.\n"
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"You can install this with:\n"
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" $ pip install httpx2\n"
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) from None
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else:
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warnings.warn(
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"Using `httpx` with `starlette.testclient` is deprecated; install `httpx2` instead.",
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StarletteDeprecationWarning,
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stacklevel=2,
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)
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_PortalFactoryType = Callable[[], AbstractContextManager[anyio.from_thread.BlockingPortal]]
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ASGIInstance = Callable[[Receive, Send], Awaitable[None]]
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ASGI2App = Callable[[Scope], ASGIInstance]
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ASGI3App = Callable[[Scope, Receive, Send], Awaitable[None]]
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_RequestData = Mapping[str, str | Iterable[str] | bytes]
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def _is_asgi3(app: ASGI2App | ASGI3App) -> TypeGuard[ASGI3App]:
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if inspect.isclass(app):
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return hasattr(app, "__await__")
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return is_async_callable(app)
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class _WrapASGI2:
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"""
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Provide an ASGI3 interface onto an ASGI2 app.
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"""
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def __init__(self, app: ASGI2App) -> None:
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self.app = app
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async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
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instance = self.app(scope)
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await instance(receive, send)
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class _AsyncBackend(TypedDict):
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backend: str
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backend_options: dict[str, Any]
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class _Upgrade(Exception):
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def __init__(self, session: WebSocketTestSession) -> None:
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self.session = session
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class WebSocketDenialResponse( # type: ignore[misc]
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httpx.Response,
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WebSocketDisconnect,
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):
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"""
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A special case of `WebSocketDisconnect`, raised in the `TestClient` if the
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`WebSocket` is closed before being accepted with a `send_denial_response()`.
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"""
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class WebSocketTestSession:
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def __init__(
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self,
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app: ASGI3App,
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scope: Scope,
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portal_factory: _PortalFactoryType,
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) -> None:
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self.app = app
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self.scope = scope
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self.accepted_subprotocol = None
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self.portal_factory = portal_factory
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self.extra_headers = None
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def __enter__(self) -> Self:
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with contextlib.ExitStack() as stack:
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self.portal = portal = stack.enter_context(self.portal_factory())
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fut, cs = portal.start_task(self._run)
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stack.callback(fut.result)
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stack.callback(portal.call, cs.cancel)
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self.send({"type": "websocket.connect"})
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message = self.receive()
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self._raise_on_close(message)
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self.accepted_subprotocol = message.get("subprotocol", None)
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self.extra_headers = message.get("headers", None)
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stack.callback(self.close, 1000)
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self.exit_stack = stack.pop_all()
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return self
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def __exit__(self, *args: Any) -> bool | None:
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return self.exit_stack.__exit__(*args)
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async def _run(self, *, task_status: anyio.abc.TaskStatus[anyio.CancelScope]) -> None:
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"""
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The sub-thread in which the websocket session runs.
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"""
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send_tx, send_rx = anyio.create_memory_object_stream[Message](math.inf)
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receive_tx, receive_rx = anyio.create_memory_object_stream[Message](math.inf)
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with send_tx, send_rx, receive_tx, receive_rx, anyio.CancelScope() as cs:
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self._receive_tx = receive_tx
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self._send_rx = send_rx
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task_status.started(cs)
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await self.app(self.scope, receive_rx.receive, send_tx.send)
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# wait for cs.cancel to be called before closing streams
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await anyio.sleep_forever()
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def _raise_on_close(self, message: Message) -> None:
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if message["type"] == "websocket.close":
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raise WebSocketDisconnect(code=message.get("code", 1000), reason=message.get("reason", ""))
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elif message["type"] == "websocket.http.response.start":
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status_code: int = message["status"]
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headers: list[tuple[bytes, bytes]] = message["headers"]
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body: list[bytes] = []
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while True:
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message = self.receive()
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assert message["type"] == "websocket.http.response.body"
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body.append(message["body"])
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if not message.get("more_body", False):
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break
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raise WebSocketDenialResponse(status_code=status_code, headers=headers, content=b"".join(body))
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def send(self, message: Message) -> None:
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self.portal.call(self._receive_tx.send, message)
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def send_text(self, data: str) -> None:
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self.send({"type": "websocket.receive", "text": data})
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def send_bytes(self, data: bytes) -> None:
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self.send({"type": "websocket.receive", "bytes": data})
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def send_json(self, data: Any, mode: Literal["text", "binary"] = "text") -> None:
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text = json.dumps(data, separators=(",", ":"), ensure_ascii=False)
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if mode == "text":
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self.send({"type": "websocket.receive", "text": text})
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else:
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self.send({"type": "websocket.receive", "bytes": text.encode("utf-8")})
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def close(self, code: int = 1000, reason: str | None = None) -> None:
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self.send({"type": "websocket.disconnect", "code": code, "reason": reason})
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def receive(self) -> Message:
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return self.portal.call(self._send_rx.receive)
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def receive_text(self) -> str:
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message = self.receive()
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self._raise_on_close(message)
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return cast(str, message["text"])
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def receive_bytes(self) -> bytes:
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message = self.receive()
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self._raise_on_close(message)
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return cast(bytes, message["bytes"])
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def receive_json(self, mode: Literal["text", "binary"] = "text") -> Any:
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message = self.receive()
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self._raise_on_close(message)
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if mode == "text":
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text = message["text"]
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else:
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text = message["bytes"].decode("utf-8")
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return json.loads(text)
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class _TestClientResponseStream(httpx.SyncByteStream):
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def __init__(self, body: Generator[bytes, None, None], exit_stack: contextlib.ExitStack) -> None:
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self._body = body
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self._exit_stack = exit_stack
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def __iter__(self) -> Generator[bytes, None, None]:
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return self._body
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def close(self) -> None:
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self._exit_stack.close()
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class _TestClientTransport(httpx.BaseTransport):
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def __init__(
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self,
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app: ASGI3App,
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portal_factory: _PortalFactoryType,
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raise_server_exceptions: bool = True,
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root_path: str = "",
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*,
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client: tuple[str, int],
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app_state: dict[str, Any],
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) -> None:
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self.app = app
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self.raise_server_exceptions = raise_server_exceptions
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self.root_path = root_path
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self.portal_factory = portal_factory
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self.app_state = app_state
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self.client = client
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self._open_requests: set[Callable[[], None]] = set()
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def close(self) -> None:
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with contextlib.ExitStack() as stack:
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while self._open_requests:
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stack.callback(self._open_requests.pop())
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def handle_request(self, request: httpx.Request) -> httpx.Response:
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scheme = request.url.scheme
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host = request.url.raw_host.decode(encoding="ascii")
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path = request.url.path
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raw_path = request.url.raw_path
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query = request.url.query.decode(encoding="ascii")
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default_port = {"http": 80, "ws": 80, "https": 443, "wss": 443}[scheme]
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port = request.url.port
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if port is None:
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port = default_port
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# Include the 'host' header.
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if "host" in request.headers:
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headers: list[tuple[bytes, bytes]] = []
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else: # pragma: no cover
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headers = [(b"host", request.url.netloc)]
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# Include other request headers.
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headers += [(key.lower().encode(), value.encode()) for key, value in request.headers.multi_items()]
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scope: dict[str, Any]
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if scheme in {"ws", "wss"}:
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subprotocol = request.headers.get("sec-websocket-protocol", None)
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if subprotocol is None:
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subprotocols: Sequence[str] = []
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else:
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subprotocols = [value.strip() for value in subprotocol.split(",")]
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scope = {
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"type": "websocket",
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"path": unquote(path),
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"raw_path": raw_path.split(b"?", 1)[0],
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"root_path": self.root_path,
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"scheme": scheme,
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"query_string": query.encode(),
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"headers": headers,
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"client": self.client,
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"server": [host, port],
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"subprotocols": subprotocols,
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"state": self.app_state.copy(),
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"extensions": {"websocket.http.response": {}},
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}
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session = WebSocketTestSession(self.app, scope, self.portal_factory)
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raise _Upgrade(session)
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scope = {
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"type": "http",
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"http_version": "1.1",
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"method": request.method,
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"path": unquote(path),
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"raw_path": raw_path.split(b"?", 1)[0],
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"root_path": self.root_path,
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"scheme": scheme,
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"query_string": query.encode(),
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"headers": headers,
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"client": self.client,
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"server": [host, port],
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"extensions": {"http.response.debug": {}, "http.response.trailers": {}},
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"state": self.app_state.copy(),
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}
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request_complete = False
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response_started = False
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body_complete = False
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trailers_expected = False
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trailers: list[tuple[bytes, bytes]] = []
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response_complete: anyio.Event
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raw_kwargs: dict[str, Any] = {}
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debug_info: dict[str, Any] | None = None
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async def receive() -> Message:
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nonlocal request_complete
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if request_complete:
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if not response_complete.is_set():
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await response_complete.wait()
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return {"type": "http.disconnect"}
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body = request.read()
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if isinstance(body, str):
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body_bytes: bytes = body.encode("utf-8") # pragma: no cover
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elif body is None:
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body_bytes = b"" # pragma: no cover
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elif isinstance(body, GeneratorType):
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try: # pragma: no cover
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chunk = body.send(None)
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if isinstance(chunk, str):
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chunk = chunk.encode("utf-8")
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return {"type": "http.request", "body": chunk, "more_body": True}
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except StopIteration: # pragma: no cover
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request_complete = True
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return {"type": "http.request", "body": b""}
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else:
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body_bytes = body
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request_complete = True
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return {"type": "http.request", "body": body_bytes}
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async def send(message: Message) -> None:
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nonlocal raw_kwargs, response_started, debug_info, body_complete, trailers_expected
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if message["type"] == "http.response.start":
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assert not response_started, 'Received multiple "http.response.start" messages.'
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raw_kwargs["status_code"] = message["status"]
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raw_kwargs["headers"] = [(key.decode(), value.decode()) for key, value in message.get("headers", [])]
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response_started = True
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trailers_expected = message.get("trailers", False)
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response_available.set()
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elif message["type"] == "http.response.body":
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assert response_started, 'Received "http.response.body" without "http.response.start".'
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assert not response_complete.is_set(), 'Received "http.response.body" after response completed.'
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assert not body_complete, 'Received "http.response.body" after body completed.'
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body = message.get("body", b"")
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more_body = message.get("more_body", False)
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await body_tx.send((bytes(body), not more_body and not trailers_expected))
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if not more_body:
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body_complete = True
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elif message["type"] == "http.response.trailers":
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assert trailers_expected, 'Received "http.response.trailers" without declaring trailers.'
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assert body_complete, 'Received "http.response.trailers" before body completed.'
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assert not response_complete.is_set(), 'Received "http.response.trailers" after response completed.'
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trailers.extend(message.get("headers", []))
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if not message.get("more_trailers", False):
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response_complete.set()
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elif message["type"] == "http.response.debug":
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debug_info = message["info"]
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async def run_app() -> None:
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try:
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with cancel_scope:
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async with body_tx:
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await self.app(scope, receive, send)
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finally:
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response_available.set()
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async def receive_body() -> bytes:
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body, complete = await body_rx.receive()
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if complete:
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response_complete.set()
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return body
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def iter_body() -> Generator[bytes, None, None]:
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while True:
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try:
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body = portal.call(receive_body)
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except anyio.EndOfStream:
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break
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if request.method != "HEAD" and body:
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yield body
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exit_stack.close()
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def cancel_if_incomplete() -> None:
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if not response_complete.is_set():
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cancel_scope.cancel()
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def close_app(exc_type: type[BaseException] | None, *_: Any) -> None:
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if app_task is None: # pragma: no cover - only if a signal interrupts start_task_soon()
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portal.call(cancel_scope.cancel)
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return
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if not app_task.done():
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portal.call(cancel_if_incomplete)
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wait_futures([app_task])
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self._open_requests.discard(abort)
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if exc_type is None and self.raise_server_exceptions and (exception := app_task.exception()):
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raise exception
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def abort() -> None:
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portal.call(cancel_scope.cancel)
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exit_stack.close()
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with contextlib.ExitStack() as stack:
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portal = stack.enter_context(self.portal_factory())
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response_available = portal.call(anyio.Event)
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response_complete = portal.call(anyio.Event)
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body_tx, body_rx = portal.call(anyio.create_memory_object_stream[tuple[bytes, bool]], 0)
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stack.callback(body_tx.close)
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stack.callback(body_rx.close)
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cancel_scope = portal.call(anyio.CancelScope)
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app_task: Future[None] | None = None
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stack.push(close_app)
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app_task = portal.start_task_soon(run_app)
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portal.call(response_available.wait)
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if not response_started:
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stack.close()
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if self.raise_server_exceptions:
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raise AssertionError("TestClient did not receive any response.")
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raw_kwargs = {"status_code": 500, "headers": [], "stream": httpx.ByteStream(b"")}
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else:
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exit_stack = stack.pop_all()
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self._open_requests.add(abort)
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raw_kwargs["stream"] = _TestClientResponseStream(iter_body(), exit_stack)
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response = httpx.Response(**raw_kwargs, request=request)
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if trailers_expected:
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response.extensions["http.response.trailers"] = trailers
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if debug_info is not None:
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response.extensions["http.response.debug"] = debug_info
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if "template" in debug_info:
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response.template = debug_info["template"] # type: ignore[attr-defined]
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if "context" in debug_info:
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response.context = debug_info["context"] # type: ignore[attr-defined]
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return response
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class TestClient(httpx.Client):
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__test__ = False
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task: Future[None]
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portal: anyio.from_thread.BlockingPortal | None = None
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def __init__(
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self,
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app: ASGIApp,
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base_url: str = "http://testserver",
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raise_server_exceptions: bool = True,
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root_path: str = "",
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backend: Literal["asyncio", "trio"] = "asyncio",
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backend_options: dict[str, Any] | None = None,
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cookies: httpx._types.CookieTypes | None = None,
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headers: dict[str, str] | None = None,
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follow_redirects: bool = True,
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client: tuple[str, int] = ("testclient", 50000),
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) -> None:
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self.async_backend = _AsyncBackend(backend=backend, backend_options=backend_options or {})
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if _is_asgi3(app):
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asgi_app = app
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else:
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app = cast(ASGI2App, app) # type: ignore[assignment]
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asgi_app = _WrapASGI2(app) # type: ignore[arg-type]
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self.app = asgi_app
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self.app_state: dict[str, Any] = {}
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transport = _TestClientTransport(
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self.app,
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portal_factory=self._portal_factory,
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raise_server_exceptions=raise_server_exceptions,
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root_path=root_path,
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app_state=self.app_state,
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client=client,
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)
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if headers is None:
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headers = {}
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headers.setdefault("user-agent", "testclient")
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super().__init__(
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base_url=base_url,
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headers=headers,
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transport=transport,
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follow_redirects=follow_redirects,
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cookies=cookies,
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)
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@contextlib.contextmanager
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def _portal_factory(self) -> Generator[anyio.from_thread.BlockingPortal, None, None]:
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if self.portal is not None:
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yield self.portal
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else:
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|
with anyio.from_thread.start_blocking_portal(**self.async_backend) as portal:
|
|
yield portal
|
|
|
|
def request( # type: ignore[override]
|
|
self,
|
|
method: str,
|
|
url: httpx._types.URLTypes,
|
|
*,
|
|
content: httpx._types.RequestContent | None = None,
|
|
data: _RequestData | None = None,
|
|
files: httpx._types.RequestFiles | None = None,
|
|
json: Any = None,
|
|
params: httpx._types.QueryParamTypes | None = None,
|
|
headers: httpx._types.HeaderTypes | None = None,
|
|
cookies: httpx._types.CookieTypes | None = None,
|
|
auth: httpx._types.AuthTypes | httpx._client.UseClientDefault = httpx._client.USE_CLIENT_DEFAULT,
|
|
follow_redirects: bool | httpx._client.UseClientDefault = httpx._client.USE_CLIENT_DEFAULT,
|
|
timeout: httpx._types.TimeoutTypes | httpx._client.UseClientDefault = httpx._client.USE_CLIENT_DEFAULT,
|
|
extensions: dict[str, Any] | None = None,
|
|
) -> httpx.Response:
|
|
if timeout is not httpx.USE_CLIENT_DEFAULT:
|
|
warnings.warn(
|
|
"You should not use the 'timeout' argument with the TestClient. "
|
|
"See https://github.com/Kludex/starlette/issues/1108 for more information.",
|
|
StarletteDeprecationWarning,
|
|
stacklevel=2,
|
|
)
|
|
url = self._merge_url(url)
|
|
return super().request(
|
|
method,
|
|
url,
|
|
content=content,
|
|
data=data,
|
|
files=files,
|
|
json=json,
|
|
params=params,
|
|
headers=headers,
|
|
cookies=cookies,
|
|
auth=auth,
|
|
follow_redirects=follow_redirects,
|
|
timeout=timeout,
|
|
extensions=extensions,
|
|
)
|
|
|
|
def websocket_connect(
|
|
self,
|
|
url: str,
|
|
subprotocols: Sequence[str] | None = None,
|
|
**kwargs: Any,
|
|
) -> WebSocketTestSession:
|
|
url = urljoin("ws://testserver", url)
|
|
headers = kwargs.get("headers", {})
|
|
headers.setdefault("connection", "upgrade")
|
|
headers.setdefault("sec-websocket-key", "testserver==")
|
|
headers.setdefault("sec-websocket-version", "13")
|
|
if subprotocols is not None:
|
|
headers.setdefault("sec-websocket-protocol", ", ".join(subprotocols))
|
|
kwargs["headers"] = headers
|
|
try:
|
|
super().request("GET", url, **kwargs)
|
|
except _Upgrade as exc:
|
|
session = exc.session
|
|
else:
|
|
raise RuntimeError("Expected WebSocket upgrade") # pragma: no cover
|
|
|
|
return session
|
|
|
|
def __enter__(self) -> Self:
|
|
with contextlib.ExitStack() as stack:
|
|
self.portal = portal = stack.enter_context(anyio.from_thread.start_blocking_portal(**self.async_backend))
|
|
|
|
@stack.callback
|
|
def reset_portal() -> None:
|
|
self.portal = None
|
|
|
|
send = anyio.create_memory_object_stream[Message | None](math.inf)
|
|
receive = anyio.create_memory_object_stream[Message](math.inf)
|
|
for channel in (*send, *receive):
|
|
stack.callback(channel.close)
|
|
self.stream_send = StapledObjectStream(*send)
|
|
self.stream_receive = StapledObjectStream(*receive)
|
|
self.task = portal.start_task_soon(self.lifespan)
|
|
portal.call(self.wait_startup)
|
|
|
|
@stack.callback
|
|
def wait_shutdown() -> None:
|
|
portal.call(self.wait_shutdown)
|
|
|
|
stack.callback(self._transport.close)
|
|
self.exit_stack = stack.pop_all()
|
|
|
|
return self
|
|
|
|
def __exit__(self, *args: Any) -> None:
|
|
self.exit_stack.close()
|
|
|
|
async def lifespan(self) -> None:
|
|
scope = {"type": "lifespan", "state": self.app_state}
|
|
try:
|
|
await self.app(scope, self.stream_receive.receive, self.stream_send.send)
|
|
finally:
|
|
await self.stream_send.send(None)
|
|
|
|
async def wait_startup(self) -> None:
|
|
await self.stream_receive.send({"type": "lifespan.startup"})
|
|
|
|
async def receive() -> Any:
|
|
message = await self.stream_send.receive()
|
|
if message is None:
|
|
self.task.result()
|
|
return message
|
|
|
|
message = await receive()
|
|
assert message["type"] in (
|
|
"lifespan.startup.complete",
|
|
"lifespan.startup.failed",
|
|
)
|
|
if message["type"] == "lifespan.startup.failed":
|
|
await receive()
|
|
|
|
async def wait_shutdown(self) -> None:
|
|
async def receive() -> Any:
|
|
message = await self.stream_send.receive()
|
|
if message is None:
|
|
self.task.result()
|
|
return message
|
|
|
|
await self.stream_receive.send({"type": "lifespan.shutdown"})
|
|
message = await receive()
|
|
assert message["type"] in (
|
|
"lifespan.shutdown.complete",
|
|
"lifespan.shutdown.failed",
|
|
)
|
|
if message["type"] == "lifespan.shutdown.failed":
|
|
await receive()
|