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|
import re
from typing import Tuple
import pytest
from .._receivebuffer import ReceiveBuffer
def test_receivebuffer() -> None:
b = ReceiveBuffer()
assert not b
assert len(b) == 0
assert bytes(b) == b""
b += b"123"
assert b
assert len(b) == 3
assert bytes(b) == b"123"
assert bytes(b) == b"123"
assert b.maybe_extract_at_most(2) == b"12"
assert b
assert len(b) == 1
assert bytes(b) == b"3"
assert bytes(b) == b"3"
assert b.maybe_extract_at_most(10) == b"3"
assert bytes(b) == b""
assert b.maybe_extract_at_most(10) is None
assert not b
################################################################
# maybe_extract_until_next
################################################################
b += b"123\n456\r\n789\r\n"
assert b.maybe_extract_next_line() == b"123\n456\r\n"
assert bytes(b) == b"789\r\n"
assert b.maybe_extract_next_line() == b"789\r\n"
assert bytes(b) == b""
b += b"12\r"
assert b.maybe_extract_next_line() is None
assert bytes(b) == b"12\r"
b += b"345\n\r"
assert b.maybe_extract_next_line() is None
assert bytes(b) == b"12\r345\n\r"
# here we stopped at the middle of b"\r\n" delimiter
b += b"\n6789aaa123\r\n"
assert b.maybe_extract_next_line() == b"12\r345\n\r\n"
assert b.maybe_extract_next_line() == b"6789aaa123\r\n"
assert b.maybe_extract_next_line() is None
assert bytes(b) == b""
################################################################
# maybe_extract_lines
################################################################
b += b"123\r\na: b\r\nfoo:bar\r\n\r\ntrailing"
lines = b.maybe_extract_lines()
assert lines == [b"123", b"a: b", b"foo:bar"]
assert bytes(b) == b"trailing"
assert b.maybe_extract_lines() is None
b += b"\r\n\r"
assert b.maybe_extract_lines() is None
assert b.maybe_extract_at_most(100) == b"trailing\r\n\r"
assert not b
# Empty body case (as happens at the end of chunked encoding if there are
# no trailing headers, e.g.)
b += b"\r\ntrailing"
assert b.maybe_extract_lines() == []
assert bytes(b) == b"trailing"
@pytest.mark.parametrize(
"data",
[
pytest.param(
(
b"HTTP/1.1 200 OK\r\n",
b"Content-type: text/plain\r\n",
b"Connection: close\r\n",
b"\r\n",
b"Some body",
),
id="with_crlf_delimiter",
),
pytest.param(
(
b"HTTP/1.1 200 OK\n",
b"Content-type: text/plain\n",
b"Connection: close\n",
b"\n",
b"Some body",
),
id="with_lf_only_delimiter",
),
pytest.param(
(
b"HTTP/1.1 200 OK\n",
b"Content-type: text/plain\r\n",
b"Connection: close\n",
b"\n",
b"Some body",
),
id="with_mixed_crlf_and_lf",
),
],
)
def test_receivebuffer_for_invalid_delimiter(data: Tuple[bytes]) -> None:
b = ReceiveBuffer()
for line in data:
b += line
lines = b.maybe_extract_lines()
assert lines == [
b"HTTP/1.1 200 OK",
b"Content-type: text/plain",
b"Connection: close",
]
assert bytes(b) == b"Some body"
|
