mirror of
https://github.com/django/daphne.git
synced 2024-11-15 04:26:35 +03:00
139 lines
3.6 KiB
Python
139 lines
3.6 KiB
Python
import string
|
|
|
|
from hypothesis import strategies
|
|
|
|
from six.moves.urllib import parse
|
|
|
|
HTTP_METHODS = ["OPTIONS", "GET", "HEAD", "POST", "PUT", "DELETE", "TRACE", "CONNECT"]
|
|
|
|
# Unicode characters of the "Letter" category
|
|
letters = strategies.characters(whitelist_categories=("Lu", "Ll", "Lt", "Lm", "Lo", "Nl"))
|
|
|
|
|
|
def http_method():
|
|
return strategies.sampled_from(HTTP_METHODS)
|
|
|
|
|
|
def _http_path_portion():
|
|
alphabet = string.ascii_letters + string.digits + "-._~"
|
|
return strategies.text(min_size=1, average_size=10, max_size=128, alphabet=alphabet)
|
|
|
|
|
|
def http_path():
|
|
"""
|
|
Returns a URL path (not encoded).
|
|
"""
|
|
return strategies.lists(
|
|
_http_path_portion(),
|
|
min_size=0,
|
|
max_size=10,
|
|
).map(lambda s: "/" + "/".join(s))
|
|
|
|
|
|
def http_body():
|
|
"""
|
|
Returns random binary body data.
|
|
"""
|
|
return strategies.binary(min_size=0, average_size=600, max_size=1500)
|
|
|
|
|
|
def valid_bidi(value):
|
|
"""
|
|
Rejects strings which nonsensical Unicode text direction flags.
|
|
|
|
Relying on random Unicode characters means that some combinations don't make sense, from a
|
|
direction of text point of view. This little helper just rejects those.
|
|
"""
|
|
try:
|
|
value.encode("idna")
|
|
except UnicodeError:
|
|
return False
|
|
else:
|
|
return True
|
|
|
|
|
|
def _domain_label():
|
|
return strategies.text(
|
|
alphabet=letters,
|
|
min_size=1,
|
|
average_size=6,
|
|
max_size=63,
|
|
).filter(valid_bidi)
|
|
|
|
|
|
def international_domain_name():
|
|
"""
|
|
Returns a byte string of a domain name, IDNA-encoded.
|
|
"""
|
|
return strategies.lists(
|
|
_domain_label(),
|
|
min_size=2,
|
|
average_size=2,
|
|
).map(lambda s: (".".join(s)).encode("idna"))
|
|
|
|
|
|
def _query_param():
|
|
return strategies.text(
|
|
alphabet=letters,
|
|
min_size=1,
|
|
average_size=10,
|
|
max_size=255,
|
|
).map(lambda s: s.encode("utf8"))
|
|
|
|
|
|
def query_params():
|
|
"""
|
|
Returns a list of two-tuples byte strings, ready for encoding with urlencode.
|
|
We're aiming for a total length of a URL below 2083 characters, so this strategy
|
|
ensures that the total urlencoded query string is not longer than 1500 characters.
|
|
"""
|
|
return strategies.lists(
|
|
strategies.tuples(_query_param(), _query_param()),
|
|
min_size=0,
|
|
average_size=5,
|
|
).filter(lambda x: len(parse.urlencode(x)) < 1500)
|
|
|
|
|
|
def header_name():
|
|
"""
|
|
Strategy returning something that looks like a HTTP header field
|
|
|
|
https://en.wikipedia.org/wiki/List_of_HTTP_header_fields suggests they are between 4
|
|
and 20 characters long
|
|
"""
|
|
return strategies.text(
|
|
alphabet=string.ascii_letters + string.digits + "-",
|
|
min_size=1,
|
|
max_size=30,
|
|
)
|
|
|
|
|
|
def header_value():
|
|
"""
|
|
Strategy returning something that looks like a HTTP header value
|
|
|
|
"For example, the Apache 2.3 server by default limits the size of each field to 8190 bytes"
|
|
https://en.wikipedia.org/wiki/List_of_HTTP_header_fields
|
|
"""
|
|
return strategies.text(
|
|
alphabet=string.ascii_letters + string.digits + string.punctuation + " /t",
|
|
min_size=1,
|
|
average_size=40,
|
|
max_size=8190,
|
|
).filter(lambda s: len(s.encode("utf8")) < 8190)
|
|
|
|
|
|
def headers():
|
|
"""
|
|
Strategy returning a list of tuples, containing HTTP header fields and their values.
|
|
|
|
"[Apache 2.3] there can be at most 100 header fields in a single request."
|
|
https://en.wikipedia.org/wiki/List_of_HTTP_header_fields
|
|
"""
|
|
return strategies.lists(
|
|
strategies.tuples(header_name(), header_value()),
|
|
min_size=0,
|
|
average_size=10,
|
|
max_size=100,
|
|
)
|