mitmproxy/netlib/tutils.py
2016-05-28 22:17:02 +02:00

133 lines
3.4 KiB
Python

from io import BytesIO
import tempfile
import os
import time
import shutil
from contextlib import contextmanager
import six
import sys
from . import utils, tcp
from .http import Request, Response, Headers
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=Headers(header="qvalue", content_length="7"),
content=b"content"
)
default.update(kwargs)
return Request(**default)
def tresp(**kwargs):
"""
Returns:
netlib.http.Response
"""
default = dict(
http_version=b"HTTP/1.1",
status_code=200,
reason=b"OK",
headers=Headers(header_response="svalue", content_length="7"),
content=b"message",
timestamp_start=time.time(),
timestamp_end=time.time(),
)
default.update(kwargs)
return Response(**default)