/usr/lib/python3/dist-packages/_pytest/doctest.py is in python3-pytest 3.3.2-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 | """ discover and run doctests in modules and test files."""
from __future__ import absolute_import, division, print_function
import traceback
import pytest
from _pytest._code.code import ExceptionInfo, ReprFileLocation, TerminalRepr
from _pytest.fixtures import FixtureRequest
DOCTEST_REPORT_CHOICE_NONE = 'none'
DOCTEST_REPORT_CHOICE_CDIFF = 'cdiff'
DOCTEST_REPORT_CHOICE_NDIFF = 'ndiff'
DOCTEST_REPORT_CHOICE_UDIFF = 'udiff'
DOCTEST_REPORT_CHOICE_ONLY_FIRST_FAILURE = 'only_first_failure'
DOCTEST_REPORT_CHOICES = (
DOCTEST_REPORT_CHOICE_NONE,
DOCTEST_REPORT_CHOICE_CDIFF,
DOCTEST_REPORT_CHOICE_NDIFF,
DOCTEST_REPORT_CHOICE_UDIFF,
DOCTEST_REPORT_CHOICE_ONLY_FIRST_FAILURE,
)
def pytest_addoption(parser):
parser.addini('doctest_optionflags', 'option flags for doctests',
type="args", default=["ELLIPSIS"])
parser.addini("doctest_encoding", 'encoding used for doctest files', default="utf-8")
group = parser.getgroup("collect")
group.addoption("--doctest-modules",
action="store_true", default=False,
help="run doctests in all .py modules",
dest="doctestmodules")
group.addoption("--doctest-report",
type=str.lower, default="udiff",
help="choose another output format for diffs on doctest failure",
choices=DOCTEST_REPORT_CHOICES,
dest="doctestreport")
group.addoption("--doctest-glob",
action="append", default=[], metavar="pat",
help="doctests file matching pattern, default: test*.txt",
dest="doctestglob")
group.addoption("--doctest-ignore-import-errors",
action="store_true", default=False,
help="ignore doctest ImportErrors",
dest="doctest_ignore_import_errors")
def pytest_collect_file(path, parent):
config = parent.config
if path.ext == ".py":
if config.option.doctestmodules and not _is_setup_py(config, path, parent):
return DoctestModule(path, parent)
elif _is_doctest(config, path, parent):
return DoctestTextfile(path, parent)
def _is_setup_py(config, path, parent):
if path.basename != "setup.py":
return False
contents = path.read()
return 'setuptools' in contents or 'distutils' in contents
def _is_doctest(config, path, parent):
if path.ext in ('.txt', '.rst') and parent.session.isinitpath(path):
return True
globs = config.getoption("doctestglob") or ['test*.txt']
for glob in globs:
if path.check(fnmatch=glob):
return True
return False
class ReprFailDoctest(TerminalRepr):
def __init__(self, reprlocation, lines):
self.reprlocation = reprlocation
self.lines = lines
def toterminal(self, tw):
for line in self.lines:
tw.line(line)
self.reprlocation.toterminal(tw)
class DoctestItem(pytest.Item):
def __init__(self, name, parent, runner=None, dtest=None):
super(DoctestItem, self).__init__(name, parent)
self.runner = runner
self.dtest = dtest
self.obj = None
self.fixture_request = None
def setup(self):
if self.dtest is not None:
self.fixture_request = _setup_fixtures(self)
globs = dict(getfixture=self.fixture_request.getfixturevalue)
for name, value in self.fixture_request.getfixturevalue('doctest_namespace').items():
globs[name] = value
self.dtest.globs.update(globs)
def runtest(self):
_check_all_skipped(self.dtest)
self.runner.run(self.dtest)
def repr_failure(self, excinfo):
import doctest
if excinfo.errisinstance((doctest.DocTestFailure,
doctest.UnexpectedException)):
doctestfailure = excinfo.value
example = doctestfailure.example
test = doctestfailure.test
filename = test.filename
if test.lineno is None:
lineno = None
else:
lineno = test.lineno + example.lineno + 1
message = excinfo.type.__name__
reprlocation = ReprFileLocation(filename, lineno, message)
checker = _get_checker()
report_choice = _get_report_choice(self.config.getoption("doctestreport"))
if lineno is not None:
lines = doctestfailure.test.docstring.splitlines(False)
# add line numbers to the left of the error message
lines = ["%03d %s" % (i + test.lineno + 1, x)
for (i, x) in enumerate(lines)]
# trim docstring error lines to 10
lines = lines[max(example.lineno - 9, 0):example.lineno + 1]
else:
lines = ['EXAMPLE LOCATION UNKNOWN, not showing all tests of that example']
indent = '>>>'
for line in example.source.splitlines():
lines.append('??? %s %s' % (indent, line))
indent = '...'
if excinfo.errisinstance(doctest.DocTestFailure):
lines += checker.output_difference(example,
doctestfailure.got, report_choice).split("\n")
else:
inner_excinfo = ExceptionInfo(excinfo.value.exc_info)
lines += ["UNEXPECTED EXCEPTION: %s" %
repr(inner_excinfo.value)]
lines += traceback.format_exception(*excinfo.value.exc_info)
return ReprFailDoctest(reprlocation, lines)
else:
return super(DoctestItem, self).repr_failure(excinfo)
def reportinfo(self):
return self.fspath, self.dtest.lineno, "[doctest] %s" % self.name
def _get_flag_lookup():
import doctest
return dict(DONT_ACCEPT_TRUE_FOR_1=doctest.DONT_ACCEPT_TRUE_FOR_1,
DONT_ACCEPT_BLANKLINE=doctest.DONT_ACCEPT_BLANKLINE,
NORMALIZE_WHITESPACE=doctest.NORMALIZE_WHITESPACE,
ELLIPSIS=doctest.ELLIPSIS,
IGNORE_EXCEPTION_DETAIL=doctest.IGNORE_EXCEPTION_DETAIL,
COMPARISON_FLAGS=doctest.COMPARISON_FLAGS,
ALLOW_UNICODE=_get_allow_unicode_flag(),
ALLOW_BYTES=_get_allow_bytes_flag(),
)
def get_optionflags(parent):
optionflags_str = parent.config.getini("doctest_optionflags")
flag_lookup_table = _get_flag_lookup()
flag_acc = 0
for flag in optionflags_str:
flag_acc |= flag_lookup_table[flag]
return flag_acc
class DoctestTextfile(pytest.Module):
obj = None
def collect(self):
import doctest
# inspired by doctest.testfile; ideally we would use it directly,
# but it doesn't support passing a custom checker
encoding = self.config.getini("doctest_encoding")
text = self.fspath.read_text(encoding)
filename = str(self.fspath)
name = self.fspath.basename
globs = {'__name__': '__main__'}
optionflags = get_optionflags(self)
runner = doctest.DebugRunner(verbose=0, optionflags=optionflags,
checker=_get_checker())
_fix_spoof_python2(runner, encoding)
parser = doctest.DocTestParser()
test = parser.get_doctest(text, globs, name, filename, 0)
if test.examples:
yield DoctestItem(test.name, self, runner, test)
def _check_all_skipped(test):
"""raises pytest.skip() if all examples in the given DocTest have the SKIP
option set.
"""
import doctest
all_skipped = all(x.options.get(doctest.SKIP, False) for x in test.examples)
if all_skipped:
pytest.skip('all tests skipped by +SKIP option')
class DoctestModule(pytest.Module):
def collect(self):
import doctest
if self.fspath.basename == "conftest.py":
module = self.config.pluginmanager._importconftest(self.fspath)
else:
try:
module = self.fspath.pyimport()
except ImportError:
if self.config.getvalue('doctest_ignore_import_errors'):
pytest.skip('unable to import module %r' % self.fspath)
else:
raise
# uses internal doctest module parsing mechanism
finder = doctest.DocTestFinder()
optionflags = get_optionflags(self)
runner = doctest.DebugRunner(verbose=0, optionflags=optionflags,
checker=_get_checker())
for test in finder.find(module, module.__name__):
if test.examples: # skip empty doctests
yield DoctestItem(test.name, self, runner, test)
def _setup_fixtures(doctest_item):
"""
Used by DoctestTextfile and DoctestItem to setup fixture information.
"""
def func():
pass
doctest_item.funcargs = {}
fm = doctest_item.session._fixturemanager
doctest_item._fixtureinfo = fm.getfixtureinfo(node=doctest_item, func=func,
cls=None, funcargs=False)
fixture_request = FixtureRequest(doctest_item)
fixture_request._fillfixtures()
return fixture_request
def _get_checker():
"""
Returns a doctest.OutputChecker subclass that takes in account the
ALLOW_UNICODE option to ignore u'' prefixes in strings and ALLOW_BYTES
to strip b'' prefixes.
Useful when the same doctest should run in Python 2 and Python 3.
An inner class is used to avoid importing "doctest" at the module
level.
"""
if hasattr(_get_checker, 'LiteralsOutputChecker'):
return _get_checker.LiteralsOutputChecker()
import doctest
import re
class LiteralsOutputChecker(doctest.OutputChecker):
"""
Copied from doctest_nose_plugin.py from the nltk project:
https://github.com/nltk/nltk
Further extended to also support byte literals.
"""
_unicode_literal_re = re.compile(r"(\W|^)[uU]([rR]?[\'\"])", re.UNICODE)
_bytes_literal_re = re.compile(r"(\W|^)[bB]([rR]?[\'\"])", re.UNICODE)
def check_output(self, want, got, optionflags):
res = doctest.OutputChecker.check_output(self, want, got,
optionflags)
if res:
return True
allow_unicode = optionflags & _get_allow_unicode_flag()
allow_bytes = optionflags & _get_allow_bytes_flag()
if not allow_unicode and not allow_bytes:
return False
else: # pragma: no cover
def remove_prefixes(regex, txt):
return re.sub(regex, r'\1\2', txt)
if allow_unicode:
want = remove_prefixes(self._unicode_literal_re, want)
got = remove_prefixes(self._unicode_literal_re, got)
if allow_bytes:
want = remove_prefixes(self._bytes_literal_re, want)
got = remove_prefixes(self._bytes_literal_re, got)
res = doctest.OutputChecker.check_output(self, want, got,
optionflags)
return res
_get_checker.LiteralsOutputChecker = LiteralsOutputChecker
return _get_checker.LiteralsOutputChecker()
def _get_allow_unicode_flag():
"""
Registers and returns the ALLOW_UNICODE flag.
"""
import doctest
return doctest.register_optionflag('ALLOW_UNICODE')
def _get_allow_bytes_flag():
"""
Registers and returns the ALLOW_BYTES flag.
"""
import doctest
return doctest.register_optionflag('ALLOW_BYTES')
def _get_report_choice(key):
"""
This function returns the actual `doctest` module flag value, we want to do it as late as possible to avoid
importing `doctest` and all its dependencies when parsing options, as it adds overhead and breaks tests.
"""
import doctest
return {
DOCTEST_REPORT_CHOICE_UDIFF: doctest.REPORT_UDIFF,
DOCTEST_REPORT_CHOICE_CDIFF: doctest.REPORT_CDIFF,
DOCTEST_REPORT_CHOICE_NDIFF: doctest.REPORT_NDIFF,
DOCTEST_REPORT_CHOICE_ONLY_FIRST_FAILURE: doctest.REPORT_ONLY_FIRST_FAILURE,
DOCTEST_REPORT_CHOICE_NONE: 0,
}[key]
def _fix_spoof_python2(runner, encoding):
"""
Installs a "SpoofOut" into the given DebugRunner so it properly deals with unicode output. This
should patch only doctests for text files because they don't have a way to declare their
encoding. Doctests in docstrings from Python modules don't have the same problem given that
Python already decoded the strings.
This fixes the problem related in issue #2434.
"""
from _pytest.compat import _PY2
if not _PY2:
return
from doctest import _SpoofOut
class UnicodeSpoof(_SpoofOut):
def getvalue(self):
result = _SpoofOut.getvalue(self)
if encoding:
result = result.decode(encoding)
return result
runner._fakeout = UnicodeSpoof()
@pytest.fixture(scope='session')
def doctest_namespace():
"""
Inject names into the doctest namespace.
"""
return dict()
|