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test_session.py
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/
test_session.py
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import re
from starlette.applications import Starlette
from starlette.middleware.sessions import SessionMiddleware
from starlette.responses import JSONResponse
def view_session(request):
return JSONResponse({"session": request.session})
async def update_session(request):
data = await request.json()
request.session.update(data)
return JSONResponse({"session": request.session})
async def clear_session(request):
request.session.clear()
return JSONResponse({"session": request.session})
def create_app():
app = Starlette()
app.add_route("/view_session", view_session)
app.add_route("/update_session", update_session, methods=["POST"])
app.add_route("/clear_session", clear_session, methods=["POST"])
return app
def test_session(test_client_factory):
app = create_app()
app.add_middleware(SessionMiddleware, secret_key="example")
client = test_client_factory(app)
response = client.get("/view_session")
assert response.json() == {"session": {}}
response = client.post("/update_session", json={"some": "data"})
assert response.json() == {"session": {"some": "data"}}
# check cookie max-age
set_cookie = response.headers["set-cookie"]
max_age_matches = re.search(r"; Max-Age=([0-9]+);", set_cookie)
assert max_age_matches is not None
assert int(max_age_matches[1]) == 14 * 24 * 3600
response = client.get("/view_session")
assert response.json() == {"session": {"some": "data"}}
response = client.post("/clear_session")
assert response.json() == {"session": {}}
response = client.get("/view_session")
assert response.json() == {"session": {}}
def test_session_expires(test_client_factory):
app = create_app()
app.add_middleware(SessionMiddleware, secret_key="example", max_age=-1)
client = test_client_factory(app)
response = client.post("/update_session", json={"some": "data"})
assert response.json() == {"session": {"some": "data"}}
# requests removes expired cookies from response.cookies, we need to
# fetch session id from the headers and pass it explicitly
expired_cookie_header = response.headers["set-cookie"]
expired_session_match = re.search(r"session=([^;]*);", expired_cookie_header)
assert expired_session_match is not None
expired_session_value = expired_session_match[1]
response = client.get("/view_session", cookies={"session": expired_session_value})
assert response.json() == {"session": {}}
def test_secure_session(test_client_factory):
app = create_app()
app.add_middleware(SessionMiddleware, secret_key="example", https_only=True)
secure_client = test_client_factory(app, base_url="https://testserver")
unsecure_client = test_client_factory(app, base_url="http://testserver")
response = unsecure_client.get("/view_session")
assert response.json() == {"session": {}}
response = unsecure_client.post("/update_session", json={"some": "data"})
assert response.json() == {"session": {"some": "data"}}
response = unsecure_client.get("/view_session")
assert response.json() == {"session": {}}
response = secure_client.get("/view_session")
assert response.json() == {"session": {}}
response = secure_client.post("/update_session", json={"some": "data"})
assert response.json() == {"session": {"some": "data"}}
response = secure_client.get("/view_session")
assert response.json() == {"session": {"some": "data"}}
response = secure_client.post("/clear_session")
assert response.json() == {"session": {}}
response = secure_client.get("/view_session")
assert response.json() == {"session": {}}
def test_session_cookie_subpath(test_client_factory):
app = create_app()
second_app = create_app()
second_app.add_middleware(SessionMiddleware, secret_key="example")
app.mount("/second_app", second_app)
client = test_client_factory(app, base_url="http://testserver/second_app")
response = client.post("second_app/update_session", json={"some": "data"})
cookie = response.headers["set-cookie"]
cookie_path_match = re.search(r"; path=(\S+);", cookie)
assert cookie_path_match is not None
cookie_path = cookie_path_match.groups()[0]
assert cookie_path == "/second_app"
def test_invalid_session_cookie(test_client_factory):
app = create_app()
app.add_middleware(SessionMiddleware, secret_key="example")
client = test_client_factory(app)
response = client.post("/update_session", json={"some": "data"})
assert response.json() == {"session": {"some": "data"}}
# we expect it to not raise an exception if we provide a bogus session cookie
response = client.get("/view_session", cookies={"session": "invalid"})
assert response.json() == {"session": {}}
def test_session_cookie(test_client_factory):
app = create_app()
app.add_middleware(SessionMiddleware, secret_key="example", max_age=None)
client = test_client_factory(app)
response = client.post("/update_session", json={"some": "data"})
assert response.json() == {"session": {"some": "data"}}
# check cookie max-age
set_cookie = response.headers["set-cookie"]
assert "Max-Age" not in set_cookie
client.cookies.clear_session_cookies()
response = client.get("/view_session")
assert response.json() == {"session": {}}