import pytest
import random
from tests.support.sync import AsyncPoll
from .. import assert_response_event, PAGE_EMPTY_TEXT, RESPONSE_STARTED_EVENT
@pytest.mark.asyncio
async def test_cached(
wait_for_event,
wait_for_future_safe,
url,
fetch,
setup_network_test,
):
network_events = await setup_network_test(
events=[
RESPONSE_STARTED_EVENT,
]
)
events = network_events[RESPONSE_STARTED_EVENT]
# `nocache` is not used in cached.py, it is here to avoid the browser cache.
cached_url = url(
f"/webdriver/tests/support/http_handlers/cached.py?status=200&nocache={random.random()}"
)
on_response_started = wait_for_event(RESPONSE_STARTED_EVENT)
await fetch(cached_url)
await wait_for_future_safe(on_response_started)
assert len(events) == 1
expected_request = {"method": "GET", "url": cached_url}
# The first request/response is used to fill the browser cache, so we expect
# fromCache to be False here.
expected_response = {
"url": cached_url,
"fromCache": False,
"status": 200,
}
assert_response_event(
events[0],
expected_request=expected_request,
expected_response=expected_response,
)
on_response_started = wait_for_event(RESPONSE_STARTED_EVENT)
await fetch(cached_url)
await wait_for_future_safe(on_response_started)
assert len(events) == 2
# The second request for the same URL has to be read from the local cache.
expected_response = {
"url": cached_url,
"fromCache": True,
"status": 200,
}
assert_response_event(
events[1],
expected_request=expected_request,
expected_response=expected_response,
)
@pytest.mark.asyncio
async def test_cached_redirect(
bidi_session,
url,
fetch,
setup_network_test,
):
network_events = await setup_network_test(
events=[
RESPONSE_STARTED_EVENT,
]
)
events = network_events[RESPONSE_STARTED_EVENT]
text_url = url(PAGE_EMPTY_TEXT)
# `nocache` is not used in cached.py, it is here to avoid the browser cache.
cached_url = url(
f"/webdriver/tests/support/http_handlers/cached.py?status=301&location={text_url}&nocache={random.random()}"
)
await fetch(cached_url)
# Expect two events, one for the initial request and one for the redirect.
wait = AsyncPoll(bidi_session, timeout=2)
await wait.until(lambda _: len(events) >= 2)
assert len(events) == 2
# The first request/response is used to fill the cache, so we expect
# fromCache to be False here.
expected_request = {"method": "GET", "url": cached_url}
expected_response = {
"url": cached_url,
"fromCache": False,
"status": 301,
}
assert_response_event(
events[0],
expected_request=expected_request,
expected_response=expected_response,
)
# The second request is the redirect
redirected_request = {"method": "GET", "url": text_url}
redirected_response = {"url": text_url, "status": 200}
assert_response_event(
events[1],
expected_request=redirected_request,
expected_response=redirected_response,
)
await fetch(cached_url)
wait = AsyncPoll(bidi_session, timeout=2)
await wait.until(lambda _: len(events) >= 4)
assert len(events) == 4
# The third request hits cached_url again and has to be read from the local cache.
expected_response = {
"url": cached_url,
"fromCache": True,
"status": 301,
}
assert_response_event(
events[2],
expected_request=expected_request,
expected_response=expected_response,
)
# The fourth request is the redirect
assert_response_event(
events[3],
expected_request=redirected_request,
expected_response=redirected_response,
)
@pytest.mark.parametrize(
"method",
[
"GET",
"HEAD",
"OPTIONS",
],
)
@pytest.mark.asyncio
async def test_cached_revalidate(
wait_for_event, wait_for_future_safe, url, fetch, setup_network_test, method
):
network_events = await setup_network_test(
events=[
RESPONSE_STARTED_EVENT,
]
)
events = network_events[RESPONSE_STARTED_EVENT]
# `nocache` is not used in cached.py, it is here to avoid the browser cache.
revalidate_url = url(
f"/webdriver/tests/support/http_handlers/must-revalidate.py?nocache={random.random()}"
)
on_response_started = wait_for_event(RESPONSE_STARTED_EVENT)
await fetch(revalidate_url, method=method)
await wait_for_future_safe(on_response_started)
assert len(events) == 1
expected_request = {"method": method, "url": revalidate_url}
expected_response = {
"url": revalidate_url,
"fromCache": False,
"status": 200,
}
assert_response_event(
events[0],
expected_request=expected_request,
expected_response=expected_response,
)
on_response_started = wait_for_event(RESPONSE_STARTED_EVENT)
# Note that we pass a specific header so that the must-revalidate.py handler
# can decide to return a 304 without having to use another URL.
await fetch(revalidate_url, method=method, headers={"return-304": "true"})
await wait_for_future_safe(on_response_started)
assert len(events) == 2
# Here fromCache should still be false, because for a 304 response the response
# cache state is "validated" and fromCache is only true if cache state is "local"
expected_response = {
"url": revalidate_url,
"fromCache": False,
"status": 304,
}
assert_response_event(
events[1],
expected_request=expected_request,
expected_response=expected_response,
)
@pytest.mark.asyncio
async def test_page_with_cached_resource(
bidi_session,
url,
inline,
setup_network_test,
top_context,
):
network_events = await setup_network_test(
events=[
RESPONSE_STARTED_EVENT,
]
)
events = network_events[RESPONSE_STARTED_EVENT]
# Build a page with a stylesheet resource which will be read from http cache
# on the next reload.
# `nocache` is not used in cached.py, it is here to avoid the browser cache.
cached_css_url = url(
f"/webdriver/tests/support/http_handlers/cached.py?status=200&contenttype=text/css&nocache={random.random()}"
)
page_with_cached_css = inline(
f"""
<head><link rel="stylesheet" type="text/css" href="{cached_css_url}"></head>
<body>test page with cached stylesheet</body>
""",
)
await bidi_session.browsing_context.navigate(
context=top_context["context"],
url=page_with_cached_css,
wait="complete",
)
# Expect two events, one for the page, one for the stylesheet.
wait = AsyncPoll(bidi_session, timeout=2)
await wait.until(lambda _: len(events) >= 2)
assert len(events) == 2
assert_response_event(
events[0],
expected_request={"method": "GET", "url": page_with_cached_css},
expected_response={"url": page_with_cached_css, "fromCache": False},
)
assert_response_event(
events[1],
expected_request={"method": "GET", "url": cached_css_url},
expected_response={"url": cached_css_url, "fromCache": False},
)
# Reload the page.
await bidi_session.browsing_context.reload(context=top_context["context"])
# Expect two additional events after reload, for the page and the stylesheet.
wait = AsyncPoll(bidi_session, timeout=2)
await wait.until(lambda _: len(events) >= 4)
assert len(events) == 4
assert_response_event(
events[2],
expected_request={"method": "GET", "url": page_with_cached_css},
expected_response={"url": page_with_cached_css, "fromCache": False},
)
assert_response_event(
events[3],
expected_request={"method": "GET", "url": cached_css_url},
expected_response={"url": cached_css_url, "fromCache": True},
)
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