sanic/tests/test_response.py
L. Kärkkäinen 7028eae083
Streaming Server (#1876)
* Streaming request by async for.

* Make all requests streaming and preload body for non-streaming handlers.

* Cleanup of code and avoid mixing streaming responses.

* Async http protocol loop.

* Change of test: don't require early bad request error but only after CRLF-CRLF.

* Add back streaming requests.

* Rewritten request body parser.

* Misc. cleanup, down to 4 failing tests.

* All tests OK.

* Entirely remove request body queue.

* Let black f*ckup the layout

* Better testing error messages on protocol errors.

* Remove StreamBuffer tests because the type is about to be removed.

* Remove tests using the deprecated get_headers function that can no longer be supported. Chunked mode is now autodetected, so do not put content-length header if chunked mode is preferred.

* Major refactoring of HTTP protocol handling (new module http.py added), all requests made streaming. A few compatibility issues and a lot of cleanup to be done remain, 16 tests failing.

* Terminate check_timeouts once connection_task finishes.

* Code cleanup, 14 tests failing.

* Much cleanup, 12 failing...

* Even more cleanup and error checking, 8 failing tests.

* Remove keep-alive header from responses. First of all, it should say timeout=<value> which wasn't the case with existing implementation, and secondly none of the other web servers I tried include this header.

* Everything but CustomServer OK.

* Linter

* Disable custom protocol test

* Remove unnecessary variables, optimise performance.

* A test was missing that body_init/body_push/body_finish are never called. Rewritten using receive_body and case switching to make it fail if bypassed.

* Minor fixes.

* Remove unused code.

* Py 3.8 check for deprecated loop argument.

* Fix a middleware cancellation handling test with py38.

* Linter 'n fixes

* Typing

* Stricter handling of request header size

* More specific error messages on Payload Too Large.

* Init http.response = None

* Messages further tuned.

* Always try to consume request body, plus minor cleanup.

* Add a missing check in case of close_if_idle on a dead connection.

* Avoid error messages on PayloadTooLarge.

* Add test for new API.

* json takes str, not bytes

* Default to no maximum request size for streaming handlers.

* Fix chunked mode crash.

* Header values should be strictly ASCII but both UTF-8 and Latin-1 exist. Use UTF-8B to
cope with all.

* Refactoring and cleanup.

* Unify response header processing of ASGI and asyncio modes.

* Avoid special handling of StreamingHTTPResponse.

* 35 % speedup in HTTP/1.1 response formatting (not so much overall effect).

* Duplicate set-cookie headers were being produced.

* Cleanup processed_headers some more.

* Linting

* Import ordering

* Response middleware ran by async request.respond().

* Need to check if transport is closing to avoid getting stuck in sending loops after peer has disconnected.

* Middleware and error handling refactoring.

* Linter

* Fix tracking of HTTP stage when writing to transport fails.

* Add clarifying comment

* Add a check for request body functions and a test for NotImplementedError.

* Linter and typing

* These must be tuples + hack mypy warnings away.

* New streaming test and minor fixes.

* Constant receive buffer size.

* 256 KiB send and receive buffers.

* Revert "256 KiB send and receive buffers."

This reverts commit abc1e3edb2.

* app.handle_exception already sends the response.

* Improved handling of errors during request.

* An odd hack to avoid an httpx limitation that causes test failures.

* Limit request header size to 8 KiB at most.

* Remove unnecessary use of format string.

* Cleanup tests

* Remove artifact

* Fix type checking

* Mark test for skipping

* Cleanup some edge cases

* Add ignore_body flag to safe methods

* Add unit tests for timeout logic

* Add unit tests for timeout logic

* Fix Mock usage in timeout test

* Change logging test to only logger in handler

* Windows py3.8 logging issue with current testing client

* Add test_header_size_exceeded

* Resolve merge conflicts

* Add request middleware to hard exception handling

* Add request middleware to hard exception handling

* Request middleware on exception handlers

* Linting

* Cleanup deprecations

Co-authored-by: L. Kärkkäinen <tronic@users.noreply.github.com>
Co-authored-by: Adam Hopkins <admhpkns@gmail.com>
2021-01-11 00:45:36 +02:00

522 lines
16 KiB
Python

import asyncio
import inspect
import os
import warnings
from collections import namedtuple
from mimetypes import guess_type
from random import choice
from unittest.mock import MagicMock
from urllib.parse import unquote
import pytest
from aiofiles import os as async_os
from sanic.response import (
HTTPResponse,
StreamingHTTPResponse,
empty,
file,
file_stream,
json,
raw,
stream,
text,
)
from sanic.server import HttpProtocol
from sanic.testing import HOST, PORT
JSON_DATA = {"ok": True}
@pytest.mark.filterwarnings("ignore:Types other than str will be")
def test_response_body_not_a_string(app):
"""Test when a response body sent from the application is not a string"""
random_num = choice(range(1000))
@app.route("/hello")
async def hello_route(request):
return text(random_num)
request, response = app.test_client.get("/hello")
assert response.status == 500
assert b"Internal Server Error" in response.body
async def sample_streaming_fn(response):
await response.write("foo,")
await asyncio.sleep(0.001)
await response.write("bar")
def test_method_not_allowed(app):
@app.get("/")
async def test_get(request):
return response.json({"hello": "world"})
request, response = app.test_client.head("/")
assert response.headers["Allow"] == "GET"
request, response = app.test_client.post("/")
assert response.headers["Allow"] == "GET"
@app.post("/")
async def test_post(request):
return response.json({"hello": "world"})
request, response = app.test_client.head("/")
assert response.status == 405
assert set(response.headers["Allow"].split(", ")) == {"GET", "POST"}
assert response.headers["Content-Length"] == "0"
request, response = app.test_client.patch("/")
assert response.status == 405
assert set(response.headers["Allow"].split(", ")) == {"GET", "POST"}
assert response.headers["Content-Length"] == "0"
def test_response_header(app):
@app.get("/")
async def test(request):
return json({"ok": True}, headers={"CONTENT-TYPE": "application/json"})
request, response = app.test_client.get("/")
assert dict(response.headers) == {
"connection": "keep-alive",
"content-length": "11",
"content-type": "application/json",
}
def test_response_content_length(app):
@app.get("/response_with_space")
async def response_with_space(request):
return json(
{"message": "Data", "details": "Some Details"},
headers={"CONTENT-TYPE": "application/json"},
)
@app.get("/response_without_space")
async def response_without_space(request):
return json(
{"message": "Data", "details": "Some Details"},
headers={"CONTENT-TYPE": "application/json"},
)
_, response = app.test_client.get("/response_with_space")
content_length_for_response_with_space = response.headers.get(
"Content-Length"
)
_, response = app.test_client.get("/response_without_space")
content_length_for_response_without_space = response.headers.get(
"Content-Length"
)
assert (
content_length_for_response_with_space
== content_length_for_response_without_space
)
assert content_length_for_response_with_space == "43"
def test_response_content_length_with_different_data_types(app):
@app.get("/")
async def get_data_with_different_types(request):
# Indentation issues in the Response is intentional. Please do not fix
return json(
{"bool": True, "none": None, "string": "string", "number": -1},
headers={"CONTENT-TYPE": "application/json"},
)
_, response = app.test_client.get("/")
assert response.headers.get("Content-Length") == "55"
@pytest.fixture
def json_app(app):
@app.route("/")
async def test(request):
return json(JSON_DATA)
@app.get("/no-content")
async def no_content_handler(request):
return json(JSON_DATA, status=204)
@app.get("/no-content/unmodified")
async def no_content_unmodified_handler(request):
return json(None, status=304)
@app.get("/unmodified")
async def unmodified_handler(request):
return json(JSON_DATA, status=304)
@app.delete("/")
async def delete_handler(request):
return json(None, status=204)
return app
def test_json_response(json_app):
from sanic.response import json_dumps
request, response = json_app.test_client.get("/")
assert response.status == 200
assert response.text == json_dumps(JSON_DATA)
assert response.json == JSON_DATA
def test_no_content(json_app):
request, response = json_app.test_client.get("/no-content")
assert response.status == 204
assert response.text == ""
assert "Content-Length" not in response.headers
request, response = json_app.test_client.get("/no-content/unmodified")
assert response.status == 304
assert response.text == ""
assert "Content-Length" not in response.headers
assert "Content-Type" not in response.headers
request, response = json_app.test_client.get("/unmodified")
assert response.status == 304
assert response.text == ""
assert "Content-Length" not in response.headers
assert "Content-Type" not in response.headers
request, response = json_app.test_client.delete("/")
assert response.status == 204
assert response.text == ""
assert "Content-Length" not in response.headers
@pytest.fixture
def streaming_app(app):
@app.route("/")
async def test(request):
return stream(
sample_streaming_fn,
content_type="text/csv",
)
return app
@pytest.fixture
def non_chunked_streaming_app(app):
@app.route("/")
async def test(request):
return stream(
sample_streaming_fn,
headers={"Content-Length": "7"},
content_type="text/csv",
chunked=False,
)
return app
def test_chunked_streaming_adds_correct_headers(streaming_app):
request, response = streaming_app.test_client.get("/")
assert response.headers["Transfer-Encoding"] == "chunked"
assert response.headers["Content-Type"] == "text/csv"
# Content-Length is not allowed by HTTP/1.1 specification
# when "Transfer-Encoding: chunked" is used
assert "Content-Length" not in response.headers
def test_chunked_streaming_returns_correct_content(streaming_app):
request, response = streaming_app.test_client.get("/")
assert response.text == "foo,bar"
@pytest.mark.asyncio
async def test_chunked_streaming_returns_correct_content_asgi(streaming_app):
request, response = await streaming_app.asgi_client.get("/")
assert response.text == "foo,bar"
def test_non_chunked_streaming_adds_correct_headers(non_chunked_streaming_app):
with pytest.warns(UserWarning) as record:
request, response = non_chunked_streaming_app.test_client.get("/")
assert len(record) == 1
assert "removed in v21.6" in record[0].message.args[0]
assert "Transfer-Encoding" not in response.headers
assert response.headers["Content-Type"] == "text/csv"
assert response.headers["Content-Length"] == "7"
@pytest.mark.asyncio
async def test_non_chunked_streaming_adds_correct_headers_asgi(
non_chunked_streaming_app,
):
request, response = await non_chunked_streaming_app.asgi_client.get("/")
assert "Transfer-Encoding" not in response.headers
assert response.headers["Content-Type"] == "text/csv"
assert response.headers["Content-Length"] == "7"
def test_non_chunked_streaming_returns_correct_content(
non_chunked_streaming_app,
):
request, response = non_chunked_streaming_app.test_client.get("/")
assert response.text == "foo,bar"
def test_stream_response_with_cookies(app):
@app.route("/")
async def test(request):
response = stream(sample_streaming_fn, content_type="text/csv")
response.cookies["test"] = "modified"
response.cookies["test"] = "pass"
return response
request, response = app.test_client.get("/")
assert response.cookies["test"] == "pass"
def test_stream_response_without_cookies(app):
@app.route("/")
async def test(request):
return stream(sample_streaming_fn, content_type="text/csv")
request, response = app.test_client.get("/")
assert response.cookies == {}
@pytest.fixture
def static_file_directory():
"""The static directory to serve"""
current_file = inspect.getfile(inspect.currentframe())
current_directory = os.path.dirname(os.path.abspath(current_file))
static_directory = os.path.join(current_directory, "static")
return static_directory
def get_file_content(static_file_directory, file_name):
"""The content of the static file to check"""
with open(os.path.join(static_file_directory, file_name), "rb") as file:
return file.read()
@pytest.mark.parametrize(
"file_name", ["test.file", "decode me.txt", "python.png"]
)
@pytest.mark.parametrize("status", [200, 401])
def test_file_response(app, file_name, static_file_directory, status):
@app.route("/files/<filename>", methods=["GET"])
def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
return file(
file_path,
status=status,
mime_type=guess_type(file_path)[0] or "text/plain",
)
request, response = app.test_client.get(f"/files/{file_name}")
assert response.status == status
assert response.body == get_file_content(static_file_directory, file_name)
assert "Content-Disposition" not in response.headers
@pytest.mark.parametrize(
"source,dest",
[
("test.file", "my_file.txt"),
("decode me.txt", "readme.md"),
("python.png", "logo.png"),
],
)
def test_file_response_custom_filename(
app, source, dest, static_file_directory
):
@app.route("/files/<filename>", methods=["GET"])
def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
return file(file_path, filename=dest)
request, response = app.test_client.get(f"/files/{source}")
assert response.status == 200
assert response.body == get_file_content(static_file_directory, source)
assert (
response.headers["Content-Disposition"]
== f'attachment; filename="{dest}"'
)
@pytest.mark.parametrize("file_name", ["test.file", "decode me.txt"])
def test_file_head_response(app, file_name, static_file_directory):
@app.route("/files/<filename>", methods=["GET", "HEAD"])
async def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
stats = await async_os.stat(file_path)
headers = dict()
headers["Accept-Ranges"] = "bytes"
headers["Content-Length"] = str(stats.st_size)
if request.method == "HEAD":
return HTTPResponse(
headers=headers,
content_type=guess_type(file_path)[0] or "text/plain",
)
else:
return file(
file_path,
headers=headers,
mime_type=guess_type(file_path)[0] or "text/plain",
)
request, response = app.test_client.head(f"/files/{file_name}")
assert response.status == 200
assert "Accept-Ranges" in response.headers
assert "Content-Length" in response.headers
assert int(response.headers["Content-Length"]) == len(
get_file_content(static_file_directory, file_name)
)
@pytest.mark.parametrize(
"file_name", ["test.file", "decode me.txt", "python.png"]
)
def test_file_stream_response(app, file_name, static_file_directory):
@app.route("/files/<filename>", methods=["GET"])
def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
return file_stream(
file_path,
chunk_size=32,
mime_type=guess_type(file_path)[0] or "text/plain",
)
request, response = app.test_client.get(f"/files/{file_name}")
assert response.status == 200
assert response.body == get_file_content(static_file_directory, file_name)
assert "Content-Disposition" not in response.headers
@pytest.mark.parametrize(
"source,dest",
[
("test.file", "my_file.txt"),
("decode me.txt", "readme.md"),
("python.png", "logo.png"),
],
)
def test_file_stream_response_custom_filename(
app, source, dest, static_file_directory
):
@app.route("/files/<filename>", methods=["GET"])
def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
return file_stream(file_path, chunk_size=32, filename=dest)
request, response = app.test_client.get(f"/files/{source}")
assert response.status == 200
assert response.body == get_file_content(static_file_directory, source)
assert (
response.headers["Content-Disposition"]
== f'attachment; filename="{dest}"'
)
@pytest.mark.parametrize("file_name", ["test.file", "decode me.txt"])
def test_file_stream_head_response(app, file_name, static_file_directory):
@app.route("/files/<filename>", methods=["GET", "HEAD"])
async def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
headers = dict()
headers["Accept-Ranges"] = "bytes"
if request.method == "HEAD":
# Return a normal HTTPResponse, not a
# StreamingHTTPResponse for a HEAD request
stats = await async_os.stat(file_path)
headers["Content-Length"] = str(stats.st_size)
return HTTPResponse(
headers=headers,
content_type=guess_type(file_path)[0] or "text/plain",
)
else:
return file_stream(
file_path,
chunk_size=32,
headers=headers,
mime_type=guess_type(file_path)[0] or "text/plain",
)
request, response = app.test_client.head(f"/files/{file_name}")
assert response.status == 200
# A HEAD request should never be streamed/chunked.
if "Transfer-Encoding" in response.headers:
assert response.headers["Transfer-Encoding"] != "chunked"
assert "Accept-Ranges" in response.headers
# A HEAD request should get the Content-Length too
assert "Content-Length" in response.headers
assert int(response.headers["Content-Length"]) == len(
get_file_content(static_file_directory, file_name)
)
@pytest.mark.parametrize(
"file_name", ["test.file", "decode me.txt", "python.png"]
)
@pytest.mark.parametrize(
"size,start,end", [(1024, 0, 1024), (4096, 1024, 8192)]
)
def test_file_stream_response_range(
app, file_name, static_file_directory, size, start, end
):
Range = namedtuple("Range", ["size", "start", "end", "total"])
total = len(get_file_content(static_file_directory, file_name))
range = Range(size=size, start=start, end=end, total=total)
@app.route("/files/<filename>", methods=["GET"])
def file_route(request, filename):
file_path = os.path.join(static_file_directory, filename)
file_path = os.path.abspath(unquote(file_path))
return file_stream(
file_path,
chunk_size=32,
mime_type=guess_type(file_path)[0] or "text/plain",
_range=range,
)
request, response = app.test_client.get(f"/files/{file_name}")
assert response.status == 206
assert "Content-Range" in response.headers
assert (
response.headers["Content-Range"]
== f"bytes {range.start}-{range.end}/{range.total}"
)
def test_raw_response(app):
@app.get("/test")
def handler(request):
return raw(b"raw_response")
request, response = app.test_client.get("/test")
assert response.content_type == "application/octet-stream"
assert response.body == b"raw_response"
def test_empty_response(app):
@app.get("/test")
def handler(request):
return empty()
request, response = app.test_client.get("/test")
assert response.content_type is None
assert response.body == b""