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import asyncio
import pytest
from asgiref.testing import ApplicationCommunicator
from asgiref.wsgi import WsgiToAsgi
@pytest.mark.asyncio
async def test_receive_nothing():
"""
Tests ApplicationCommunicator.receive_nothing to return the correct value.
"""
# Get an ApplicationCommunicator instance
def wsgi_application(environ, start_response):
start_response("200 OK", [])
yield b"content"
application = WsgiToAsgi(wsgi_application)
instance = ApplicationCommunicator(
application,
{
"type": "http",
"http_version": "1.0",
"method": "GET",
"path": "/foo/",
"query_string": b"bar=baz",
"headers": [],
},
)
# No event
assert await instance.receive_nothing() is True
# Produce 3 events to receive
await instance.send_input({"type": "http.request"})
# Start event of the response
assert await instance.receive_nothing() is False
await instance.receive_output()
# First body event of the response announcing further body event
assert await instance.receive_nothing() is False
await instance.receive_output()
# Last body event of the response
assert await instance.receive_nothing() is False
await instance.receive_output()
# Response received completely
assert await instance.receive_nothing(0.01) is True
def test_receive_nothing_lazy_loop():
"""
Tests ApplicationCommunicator.receive_nothing to return the correct value.
"""
# Get an ApplicationCommunicator instance
def wsgi_application(environ, start_response):
start_response("200 OK", [])
yield b"content"
application = WsgiToAsgi(wsgi_application)
instance = ApplicationCommunicator(
application,
{
"type": "http",
"http_version": "1.0",
"method": "GET",
"path": "/foo/",
"query_string": b"bar=baz",
"headers": [],
},
)
async def test():
# No event
assert await instance.receive_nothing() is True
# Produce 3 events to receive
await instance.send_input({"type": "http.request"})
# Start event of the response
assert await instance.receive_nothing() is False
await instance.receive_output()
# First body event of the response announcing further body event
assert await instance.receive_nothing() is False
await instance.receive_output()
# Last body event of the response
assert await instance.receive_nothing() is False
await instance.receive_output()
# Response received completely
assert await instance.receive_nothing(0.01) is True
asyncio.run(test())
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