Current File : //usr/lib/python3/dist-packages/cssutils/tests/basetest.py
"""Base class for all tests"""
import logging
import os
import re
import sys
import io
import unittest
import urllib.request, urllib.error, urllib.parse
from email import message_from_string, message_from_file
# add src to PYTHONPATH
sys.path.append(os.path.join(os.path.abspath('.'), '..'))
import cssutils
PY2x = sys.version_info < (3,0)
def msg3x(msg):
"""msg might contain unicode repr `u'...'` which in py3 is `u'...`
needed by tests using ``assertRaisesMsg``"""
if not PY2x and msg.find("u'"):
msg = msg.replace("u'", "'")
return msg
def get_resource_filename(resource_name):
"""Get the resource filename.
If the module is zipped, the file will be extracted and the temporary name
is returned instead.
"""
try:
from pkg_resources import resource_filename
except ImportError:
this_dir = os.path.dirname(__file__)
parts = resource_name.split('/')
return os.path.normpath(os.path.join(this_dir, '..', *parts))
else:
return resource_filename('cssutils', resource_name)
def get_sheet_filename(sheet_name):
"""Get the filename for the given sheet."""
# Extract all sheets since they might use @import
sheet_dir = get_resource_filename('tests/sheets')
return os.path.join(sheet_dir, sheet_name)
class BaseTestCase(unittest.TestCase):
def _tempSer(self):
"Replace default ser with temp ser."
self._ser = cssutils.ser
cssutils.ser = cssutils.serialize.CSSSerializer()
def _restoreSer(self):
"Restore the default ser."
cssutils.ser = self._ser
def setUp(self):
# a raising parser!!!
cssutils.log.raiseExceptions = True
cssutils.log.setLevel(logging.FATAL)
self.p = cssutils.CSSParser(raiseExceptions=True)
def tearDown(self):
if hasattr(self, '_ser'):
self._restoreSer()
def assertRaisesEx(self, exception, callable, *args, **kwargs):
"""
from
http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/307970
"""
if "exc_args" in kwargs:
exc_args = kwargs["exc_args"]
del kwargs["exc_args"]
else:
exc_args = None
if "exc_pattern" in kwargs:
exc_pattern = kwargs["exc_pattern"]
del kwargs["exc_pattern"]
else:
exc_pattern = None
argv = [repr(a) for a in args]\
+ ["%s=%r" % (k,v) for k,v in list(kwargs.items())]
callsig = "%s(%s)" % (callable.__name__, ", ".join(argv))
try:
callable(*args, **kwargs)
except exception as exc:
if exc_args is not None:
self.assertFalse(exc.args != exc_args,
"%s raised %s with unexpected args: "\
"expected=%r, actual=%r"\
% (callsig, exc.__class__, exc_args, exc.args))
if exc_pattern is not None:
self.assertTrue(exc_pattern.search(str(exc)),
"%s raised %s, but the exception "\
"does not match '%s': %r"\
% (callsig, exc.__class__, exc_pattern.pattern,
str(exc)))
except:
exc_info = sys.exc_info()
print(exc_info)
self.fail("%s raised an unexpected exception type: "\
"expected=%s, actual=%s"\
% (callsig, exception, exc_info[0]))
else:
self.fail("%s did not raise %s" % (callsig, exception))
def assertRaisesMsg(self, excClass, msg, callableObj, *args, **kwargs):
"""
Just like unittest.TestCase.assertRaises,
but checks that the message is right too.
Usage::
self.assertRaisesMsg(
MyException, "Exception message",
my_function, (arg1, arg2)
)
from
http://www.nedbatchelder.com/blog/200609.html#e20060905T064418
"""
try:
callableObj(*args, **kwargs)
except excClass as exc:
excMsg = str(exc)
if not msg:
# No message provided: any message is fine.
return
elif excMsg == msg:
# Message provided, and we got the right message: passes.
return
else:
# Message provided, and it didn't match: fail!
raise self.failureException(
"Right exception, wrong message: got '%s' instead of '%s'" %
(excMsg, msg))
else:
if hasattr(excClass, '__name__'):
excName = excClass.__name__
else:
excName = str(excClass)
raise self.failureException(
"Expected to raise %s, didn't get an exception at all" %
excName
)
def do_equal_p(self, tests, att='cssText', debug=False, raising=True):
"""
if raising self.p is used for parsing, else self.pf
"""
p = cssutils.CSSParser(raiseExceptions=raising)
# parses with self.p and checks att of result
for test, expected in list(tests.items()):
if debug:
print('"%s"' % test)
s = p.parseString(test)
if expected is None:
expected = test
self.assertEqual(expected, str(s.__getattribute__(att), 'utf-8'))
def do_raise_p(self, tests, debug=False, raising=True):
# parses with self.p and expects raise
p = cssutils.CSSParser(raiseExceptions=raising)
for test, expected in list(tests.items()):
if debug:
print('"%s"' % test)
self.assertRaises(expected, p.parseString, test)
def do_equal_r(self, tests, att='cssText', debug=False):
# sets attribute att of self.r and asserts Equal
for test, expected in list(tests.items()):
if debug:
print('"%s"' % test)
self.r.__setattr__(att, test)
if expected is None:
expected = test
self.assertEqual(expected, self.r.__getattribute__(att))
def do_raise_r(self, tests, att='_setCssText', debug=False):
# sets self.r and asserts raise
for test, expected in list(tests.items()):
if debug:
print('"%s"' % test)
self.assertRaises(expected, self.r.__getattribute__(att), test)
def do_raise_r_list(self, tests, err, att='_setCssText', debug=False):
# sets self.r and asserts raise
for test in tests:
if debug:
print('"%s"' % test)
self.assertRaises(err, self.r.__getattribute__(att), test)
class GenerateTests(type):
"""Metaclass to handle a parametrized test.
This works by generating many test methods from a single method.
To generate the methods, you need the base method with the prefix
"gen_test_", which takes the parameters. Then you define the attribute
"cases" on this method with a list of cases. Each case is a tuple, which is
unpacked when the test is called.
Example::
def gen_test_length(self, string, expected):
self.assertEquals(len(string), expected)
gen_test_length.cases = [
("a", 1),
("aa", 2),
]
"""
def __new__(cls, name, bases, attrs):
new_attrs = {}
for aname, aobj in list(attrs.items()):
if not aname.startswith("gen_test_"):
new_attrs[aname] = aobj
continue
# Strip off the gen_
test_name = aname[4:]
cases = aobj.cases
for case_num, case in enumerate(cases):
stringed_case = cls.make_case_repr(case)
case_name = "%s_%s_%s" % (test_name, case_num, stringed_case)
# Force the closure binding
def make_wrapper(case=case, aobj=aobj):
def wrapper(self):
aobj(self, *case)
return wrapper
wrapper = make_wrapper()
wrapper.__name__ = case_name
wrapper.__doc__ = "%s(%s)" % (test_name,
", ".join(map(repr, case)))
if aobj.__doc__ is not None:
wrapper.__doc__ += "\n\n" + aobj.__doc__
new_attrs[case_name] = wrapper
return type(name, bases, new_attrs)
@classmethod
def make_case_repr(cls, case):
if isinstance(case, str):
value = case
else:
try:
iter(case)
except TypeError:
value = repr(case)
else:
value = '_'.join(cls.make_case_repr(x) for x in case)
value = re.sub('[^A-Za-z_]', '_', value)
value = re.sub('_{2,}', '_', value)
return value
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