mitmproxy/netlib/tutils.py

132 lines
3.5 KiB
Python

from io import BytesIO
import tempfile
import os
import time
import shutil
from contextlib import contextmanager
import six
import sys
from netlib import utils, tcp, http
def treader(bytes):
"""
Construct a tcp.Read object from bytes.
"""
fp = BytesIO(bytes)
return tcp.Reader(fp)
@contextmanager
def tmpdir(*args, **kwargs):
orig_workdir = os.getcwd()
temp_workdir = tempfile.mkdtemp(*args, **kwargs)
os.chdir(temp_workdir)
yield temp_workdir
os.chdir(orig_workdir)
shutil.rmtree(temp_workdir)
def _check_exception(expected, actual, exc_tb):
if isinstance(expected, six.string_types):
if expected.lower() not in str(actual).lower():
six.reraise(AssertionError, AssertionError(
"Expected %s, but caught %s" % (
repr(expected), repr(actual)
)
), exc_tb)
else:
if not isinstance(actual, expected):
six.reraise(AssertionError, AssertionError(
"Expected %s, but caught %s %s" % (
expected.__name__, actual.__class__.__name__, repr(actual)
)
), exc_tb)
def raises(expected_exception, obj=None, *args, **kwargs):
"""
Assert that a callable raises a specified exception.
:exc An exception class or a string. If a class, assert that an
exception of this type is raised. If a string, assert that the string
occurs in the string representation of the exception, based on a
case-insenstivie match.
:obj A callable object.
:args Arguments to be passsed to the callable.
:kwargs Arguments to be passed to the callable.
"""
if obj is None:
return RaisesContext(expected_exception)
else:
try:
ret = obj(*args, **kwargs)
except Exception as actual:
_check_exception(expected_exception, actual, sys.exc_info()[2])
else:
raise AssertionError("No exception raised. Return value: {}".format(ret))
class RaisesContext(object):
def __init__(self, expected_exception):
self.expected_exception = expected_exception
def __enter__(self):
return
def __exit__(self, exc_type, exc_val, exc_tb):
if not exc_type:
raise AssertionError("No exception raised.")
else:
_check_exception(self.expected_exception, exc_val, exc_tb)
return True
test_data = utils.Data(__name__)
# FIXME: Temporary workaround during repo merge.
test_data.dirname = os.path.join(test_data.dirname, "..", "test", "netlib")
def treq(**kwargs):
"""
Returns:
netlib.http.Request
"""
default = dict(
first_line_format="relative",
method=b"GET",
scheme=b"http",
host=b"address",
port=22,
path=b"/path",
http_version=b"HTTP/1.1",
headers=http.Headers(((b"header", b"qvalue"), (b"content-length", b"7"))),
content=b"content"
)
default.update(kwargs)
return http.Request(**default)
def tresp(**kwargs):
"""
Returns:
netlib.http.Response
"""
default = dict(
http_version=b"HTTP/1.1",
status_code=200,
reason=b"OK",
headers=http.Headers(((b"header-response", b"svalue"), (b"content-length", b"7"))),
content=b"message",
timestamp_start=time.time(),
timestamp_end=time.time(),
)
default.update(kwargs)
return http.Response(**default)