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from __future__ import annotations
import asyncio
from functools import partial
from typing import Any, Callable, List
import pytest
import trio
from hypercorn.app_wrappers import _build_environ, InvalidPathError, WSGIWrapper
from hypercorn.typing import ASGISendEvent, ConnectionState, HTTPScope
def echo_body(environ: dict, start_response: Callable) -> List[bytes]:
status = "200 OK"
output = environ["wsgi.input"].read()
headers = [
("Content-Type", "text/plain; charset=utf-8"),
("Content-Length", str(len(output))),
]
start_response(status, headers)
return [output]
@pytest.mark.trio
async def test_wsgi_trio() -> None:
app = WSGIWrapper(echo_body, 2**16)
scope: HTTPScope = {
"http_version": "1.1",
"asgi": {},
"method": "GET",
"headers": [],
"path": "/",
"root_path": "/",
"query_string": b"a=b",
"raw_path": b"/",
"scheme": "http",
"type": "http",
"client": ("localhost", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
send_channel, receive_channel = trio.open_memory_channel(1)
await send_channel.send({"type": "http.request"})
messages = []
async def _send(message: ASGISendEvent) -> None:
nonlocal messages
messages.append(message)
await app(scope, receive_channel.receive, _send, trio.to_thread.run_sync, trio.from_thread.run)
assert messages == [
{
"headers": [(b"content-type", b"text/plain; charset=utf-8"), (b"content-length", b"0")],
"status": 200,
"type": "http.response.start",
},
{"body": bytearray(b""), "type": "http.response.body", "more_body": True},
{"body": bytearray(b""), "type": "http.response.body", "more_body": False},
]
async def _run_app(app: WSGIWrapper, scope: HTTPScope, body: bytes = b"") -> List[ASGISendEvent]:
queue: asyncio.Queue = asyncio.Queue()
await queue.put({"type": "http.request", "body": body})
messages = []
async def _send(message: ASGISendEvent) -> None:
nonlocal messages
messages.append(message)
event_loop = asyncio.get_running_loop()
def _call_soon(func: Callable, *args: Any) -> Any:
future = asyncio.run_coroutine_threadsafe(func(*args), event_loop)
return future.result()
await app(scope, queue.get, _send, partial(event_loop.run_in_executor, None), _call_soon)
return messages
@pytest.mark.asyncio
async def test_wsgi_asyncio() -> None:
app = WSGIWrapper(echo_body, 2**16)
scope: HTTPScope = {
"http_version": "1.1",
"asgi": {},
"method": "GET",
"headers": [],
"path": "/",
"root_path": "/",
"query_string": b"a=b",
"raw_path": b"/",
"scheme": "http",
"type": "http",
"client": ("localhost", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
messages = await _run_app(app, scope)
assert messages == [
{
"headers": [(b"content-type", b"text/plain; charset=utf-8"), (b"content-length", b"0")],
"status": 200,
"type": "http.response.start",
},
{"body": bytearray(b""), "type": "http.response.body", "more_body": True},
{"body": bytearray(b""), "type": "http.response.body", "more_body": False},
]
@pytest.mark.asyncio
async def test_max_body_size() -> None:
app = WSGIWrapper(echo_body, 4)
scope: HTTPScope = {
"http_version": "1.1",
"asgi": {},
"method": "GET",
"headers": [],
"path": "/",
"root_path": "/",
"query_string": b"a=b",
"raw_path": b"/",
"scheme": "http",
"type": "http",
"client": ("localhost", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
messages = await _run_app(app, scope, b"abcde")
assert messages == [
{"headers": [], "status": 400, "type": "http.response.start"},
{"body": bytearray(b""), "type": "http.response.body", "more_body": False},
]
def no_start_response(environ: dict, start_response: Callable) -> List[bytes]:
return [b"result"]
@pytest.mark.asyncio
async def test_no_start_response() -> None:
app = WSGIWrapper(no_start_response, 2**16)
scope: HTTPScope = {
"http_version": "1.1",
"asgi": {},
"method": "GET",
"headers": [],
"path": "/",
"root_path": "/",
"query_string": b"a=b",
"raw_path": b"/",
"scheme": "http",
"type": "http",
"client": ("localhost", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
with pytest.raises(RuntimeError):
await _run_app(app, scope)
def test_build_environ_encoding() -> None:
scope: HTTPScope = {
"http_version": "1.0",
"asgi": {},
"method": "GET",
"headers": [],
"path": "/中/文",
"root_path": "/中",
"query_string": b"bar=baz",
"raw_path": "/中/文".encode(),
"scheme": "http",
"type": "http",
"client": ("localhost", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
environ = _build_environ(scope, b"")
assert environ["SCRIPT_NAME"] == "/中".encode("utf8").decode("latin-1")
assert environ["PATH_INFO"] == "/文".encode("utf8").decode("latin-1")
def test_build_environ_root_path() -> None:
scope: HTTPScope = {
"http_version": "1.0",
"asgi": {},
"method": "GET",
"headers": [],
"path": "/中文",
"root_path": "/中国",
"query_string": b"bar=baz",
"raw_path": "/中文".encode(),
"scheme": "http",
"type": "http",
"client": ("localhost", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
with pytest.raises(InvalidPathError):
_build_environ(scope, b"")
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