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test_asgi.py
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test_asgi.py
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import json
import pytest
import httpx
async def hello_world(scope, receive, send):
status = 200
output = b"Hello, World!"
headers = [(b"content-type", "text/plain"), (b"content-length", str(len(output)))]
await send({"type": "http.response.start", "status": status, "headers": headers})
await send({"type": "http.response.body", "body": output})
async def echo_path(scope, receive, send):
status = 200
output = json.dumps({"path": scope["path"]}).encode("utf-8")
headers = [(b"content-type", "text/plain"), (b"content-length", str(len(output)))]
await send({"type": "http.response.start", "status": status, "headers": headers})
await send({"type": "http.response.body", "body": output})
async def echo_raw_path(scope, receive, send):
status = 200
output = json.dumps({"raw_path": scope["raw_path"].decode("ascii")}).encode("utf-8")
headers = [(b"content-type", "text/plain"), (b"content-length", str(len(output)))]
await send({"type": "http.response.start", "status": status, "headers": headers})
await send({"type": "http.response.body", "body": output})
async def echo_body(scope, receive, send):
status = 200
headers = [(b"content-type", "text/plain")]
await send({"type": "http.response.start", "status": status, "headers": headers})
more_body = True
while more_body:
message = await receive()
body = message.get("body", b"")
more_body = message.get("more_body", False)
await send({"type": "http.response.body", "body": body, "more_body": more_body})
async def echo_headers(scope, receive, send):
status = 200
output = json.dumps(
{"headers": [[k.decode(), v.decode()] for k, v in scope["headers"]]}
).encode("utf-8")
headers = [(b"content-type", "text/plain"), (b"content-length", str(len(output)))]
await send({"type": "http.response.start", "status": status, "headers": headers})
await send({"type": "http.response.body", "body": output})
async def raise_exc(scope, receive, send):
raise RuntimeError()
async def raise_exc_after_response(scope, receive, send):
status = 200
output = b"Hello, World!"
headers = [(b"content-type", "text/plain"), (b"content-length", str(len(output)))]
await send({"type": "http.response.start", "status": status, "headers": headers})
await send({"type": "http.response.body", "body": output})
raise RuntimeError()
@pytest.mark.anyio
async def test_asgi_transport():
async with httpx.ASGITransport(app=hello_world) as transport:
request = httpx.Request("GET", "http://www.example.com/")
response = await transport.handle_async_request(request)
await response.aread()
assert response.status_code == 200
assert response.content == b"Hello, World!"
@pytest.mark.anyio
async def test_asgi_transport_no_body():
async with httpx.ASGITransport(app=echo_body) as transport:
request = httpx.Request("GET", "http://www.example.com/")
response = await transport.handle_async_request(request)
await response.aread()
assert response.status_code == 200
assert response.content == b""
@pytest.mark.anyio
async def test_asgi():
transport = httpx.ASGITransport(app=hello_world)
async with httpx.AsyncClient(transport=transport) as client:
response = await client.get("http://www.example.org/")
assert response.status_code == 200
assert response.text == "Hello, World!"
@pytest.mark.anyio
async def test_asgi_urlencoded_path():
transport = httpx.ASGITransport(app=echo_path)
async with httpx.AsyncClient(transport=transport) as client:
url = httpx.URL("http://www.example.org/").copy_with(path="/user@example.org")
response = await client.get(url)
assert response.status_code == 200
assert response.json() == {"path": "/user@example.org"}
@pytest.mark.anyio
async def test_asgi_raw_path():
transport = httpx.ASGITransport(app=echo_raw_path)
async with httpx.AsyncClient(transport=transport) as client:
url = httpx.URL("http://www.example.org/").copy_with(path="/user@example.org")
response = await client.get(url)
assert response.status_code == 200
assert response.json() == {"raw_path": "/user@example.org"}
@pytest.mark.anyio
async def test_asgi_raw_path_should_not_include_querystring_portion():
"""
See https://github.com/encode/httpx/issues/2810
"""
transport = httpx.ASGITransport(app=echo_raw_path)
async with httpx.AsyncClient(transport=transport) as client:
url = httpx.URL("http://www.example.org/path?query")
response = await client.get(url)
assert response.status_code == 200
assert response.json() == {"raw_path": "/path"}
@pytest.mark.anyio
async def test_asgi_upload():
transport = httpx.ASGITransport(app=echo_body)
async with httpx.AsyncClient(transport=transport) as client:
response = await client.post("http://www.example.org/", content=b"example")
assert response.status_code == 200
assert response.text == "example"
@pytest.mark.anyio
async def test_asgi_headers():
transport = httpx.ASGITransport(app=echo_headers)
async with httpx.AsyncClient(transport=transport) as client:
response = await client.get("http://www.example.org/")
assert response.status_code == 200
assert response.json() == {
"headers": [
["host", "www.example.org"],
["accept", "*/*"],
["accept-encoding", "gzip, deflate, br, zstd"],
["connection", "keep-alive"],
["user-agent", f"python-httpx/{httpx.__version__}"],
]
}
@pytest.mark.anyio
async def test_asgi_exc():
transport = httpx.ASGITransport(app=raise_exc)
async with httpx.AsyncClient(transport=transport) as client:
with pytest.raises(RuntimeError):
await client.get("http://www.example.org/")
@pytest.mark.anyio
async def test_asgi_exc_after_response():
transport = httpx.ASGITransport(app=raise_exc_after_response)
async with httpx.AsyncClient(transport=transport) as client:
with pytest.raises(RuntimeError):
await client.get("http://www.example.org/")
@pytest.mark.anyio
async def test_asgi_disconnect_after_response_complete():
disconnect = False
async def read_body(scope, receive, send):
nonlocal disconnect
status = 200
headers = [(b"content-type", "text/plain")]
await send(
{"type": "http.response.start", "status": status, "headers": headers}
)
more_body = True
while more_body:
message = await receive()
more_body = message.get("more_body", False)
await send({"type": "http.response.body", "body": b"", "more_body": False})
# The ASGI spec says of the Disconnect message:
# "Sent to the application when a HTTP connection is closed or if receive is
# called after a response has been sent."
# So if receive() is called again, the disconnect message should be received
message = await receive()
disconnect = message.get("type") == "http.disconnect"
transport = httpx.ASGITransport(app=read_body)
async with httpx.AsyncClient(transport=transport) as client:
response = await client.post("http://www.example.org/", content=b"example")
assert response.status_code == 200
assert disconnect
@pytest.mark.anyio
async def test_asgi_exc_no_raise():
transport = httpx.ASGITransport(app=raise_exc, raise_app_exceptions=False)
async with httpx.AsyncClient(transport=transport) as client:
response = await client.get("http://www.example.org/")
assert response.status_code == 500
@pytest.mark.anyio
async def test_deprecated_shortcut():
"""
The `app=...` shortcut is now deprecated.
Use the explicit transport style instead.
"""
with pytest.warns(DeprecationWarning):
httpx.AsyncClient(app=hello_world)