import os
import sys
import builtins
import contextlib
import importlib.util
import inspect
import pydoc
import py_compile
import keyword
import _pickle
import pkgutil
import re
import stat
import string
import test.support
import time
import types
import unittest
import urllib.parse
import xml.etree
import textwrap
from io import StringIO
from collections import namedtuple
from test.script_helper import assert_python_ok
from test.support import (
TESTFN, rmtree,
reap_children, reap_threads, captured_output, captured_stdout,
captured_stderr, unlink, requires_docstrings
)
from test import pydoc_mod
try:
import threading
except ImportError:
threading = None
class nonascii:
'Це не латиниця'
pass
if test.support.HAVE_DOCSTRINGS:
expected_data_docstrings = (
'dictionary for instance variables (if defined)',
'list of weak references to the object (if defined)',
) * 2
else:
expected_data_docstrings = ('', '', '', '')
expected_text_pattern = """
NAME
test.pydoc_mod - This is a test module for test_pydoc
%s
CLASSES
builtins.object
A
B
C
\x20\x20\x20\x20
class A(builtins.object)
| Hello and goodbye
|\x20\x20
| Methods defined here:
|\x20\x20
| __init__()
| Wow, I have no function!
|\x20\x20
| ----------------------------------------------------------------------
| Data descriptors defined here:
|\x20\x20
| __dict__%s
|\x20\x20
| __weakref__%s
\x20\x20\x20\x20
class B(builtins.object)
| Data descriptors defined here:
|\x20\x20
| __dict__%s
|\x20\x20
| __weakref__%s
|\x20\x20
| ----------------------------------------------------------------------
| Data and other attributes defined here:
|\x20\x20
| NO_MEANING = 'eggs'
\x20\x20\x20\x20
class C(builtins.object)
| Methods defined here:
|\x20\x20
| get_answer(self)
| Return say_no()
|\x20\x20
| is_it_true(self)
| Return self.get_answer()
|\x20\x20
| say_no(self)
|\x20\x20
| ----------------------------------------------------------------------
| Data descriptors defined here:
|\x20\x20
| __dict__
| dictionary for instance variables (if defined)
|\x20\x20
| __weakref__
| list of weak references to the object (if defined)
FUNCTIONS
doc_func()
This function solves all of the world's problems:
hunger
lack of Python
war
\x20\x20\x20\x20
nodoc_func()
DATA
__xyz__ = 'X, Y and Z'
VERSION
1.2.3.4
AUTHOR
Benjamin Peterson
CREDITS
Nobody
FILE
%s
""".strip()
expected_text_data_docstrings = tuple('\n | ' + s if s else ''
for s in expected_data_docstrings)
expected_html_pattern = """
This is a test module for test_pydoc
Classes |
\x20\x20\x20\x20
| | |
- builtins.object
-
- A
- B
- C
class A(builtins.object) |
\x20\x20\x20\x20
| |
Hello and goodbye
|
| |
Methods defined here:
- __init__()
- Wow, I have no function!
Data descriptors defined here:
- __dict__
- %s
- __weakref__
- %s
|
class B(builtins.object) |
\x20\x20\x20\x20
| | |
Data descriptors defined here:
- __dict__
- %s
- __weakref__
- %s
Data and other attributes defined here:
- NO_MEANING = 'eggs'
|
|
Functions |
\x20\x20\x20\x20
| | |
- doc_func()
- This function solves all of the world's problems:
hunger
lack of Python
war
- nodoc_func()
|
Data |
\x20\x20\x20\x20
| | |
__xyz__ = 'X, Y and Z' |
Author |
\x20\x20\x20\x20
| | |
Benjamin Peterson |
Credits |
\x20\x20\x20\x20
| | |
Nobody |
""".strip() # ' <- emacs turd
expected_html_data_docstrings = tuple(s.replace(' ', ' ')
for s in expected_data_docstrings)
# output pattern for missing module
missing_pattern = '''\
No Python documentation found for %r.
Use help() to get the interactive help utility.
Use help(str) for help on the str class.'''.replace('\n', os.linesep)
# output pattern for module with bad imports
badimport_pattern = "problem in %s - ImportError: No module named %r"
expected_dynamicattribute_pattern = """
Help on class DA in module %s:
class DA(builtins.object)
| Data descriptors defined here:
|\x20\x20
| __dict__%s
|\x20\x20
| __weakref__%s
|\x20\x20
| ham
|\x20\x20
| ----------------------------------------------------------------------
| Data and other attributes inherited from Meta:
|\x20\x20
| ham = 'spam'
""".strip()
expected_virtualattribute_pattern1 = """
Help on class Class in module %s:
class Class(builtins.object)
| Data and other attributes inherited from Meta:
|\x20\x20
| LIFE = 42
""".strip()
expected_virtualattribute_pattern2 = """
Help on class Class1 in module %s:
class Class1(builtins.object)
| Data and other attributes inherited from Meta1:
|\x20\x20
| one = 1
""".strip()
expected_virtualattribute_pattern3 = """
Help on class Class2 in module %s:
class Class2(Class1)
| Method resolution order:
| Class2
| Class1
| builtins.object
|\x20\x20
| Data and other attributes inherited from Meta1:
|\x20\x20
| one = 1
|\x20\x20
| ----------------------------------------------------------------------
| Data and other attributes inherited from Meta3:
|\x20\x20
| three = 3
|\x20\x20
| ----------------------------------------------------------------------
| Data and other attributes inherited from Meta2:
|\x20\x20
| two = 2
""".strip()
expected_missingattribute_pattern = """
Help on class C in module %s:
class C(builtins.object)
| Data and other attributes defined here:
|\x20\x20
| here = 'present!'
""".strip()
def run_pydoc(module_name, *args, **env):
"""
Runs pydoc on the specified module. Returns the stripped
output of pydoc.
"""
args = args + (module_name,)
# do not write bytecode files to avoid caching errors
rc, out, err = assert_python_ok('-B', pydoc.__file__, *args, **env)
return out.strip()
def get_pydoc_html(module):
"Returns pydoc generated output as html"
doc = pydoc.HTMLDoc()
output = doc.docmodule(module)
loc = doc.getdocloc(pydoc_mod) or ""
if loc:
loc = "
Module Docs"
return output.strip(), loc
def get_pydoc_text(module):
"Returns pydoc generated output as text"
doc = pydoc.TextDoc()
loc = doc.getdocloc(pydoc_mod) or ""
if loc:
loc = "\nMODULE DOCS\n " + loc + "\n"
output = doc.docmodule(module)
# clean up the extra text formatting that pydoc performs
patt = re.compile('\b.')
output = patt.sub('', output)
return output.strip(), loc
def get_html_title(text):
# Bit of hack, but good enough for test purposes
header, _, _ = text.partition("")
_, _, title = header.partition("")
title, _, _ = title.partition("")
return title
class PydocBaseTest(unittest.TestCase):
def _restricted_walk_packages(self, walk_packages, path=None):
"""
A version of pkgutil.walk_packages() that will restrict itself to
a given path.
"""
default_path = path or [os.path.dirname(__file__)]
def wrapper(path=None, prefix='', onerror=None):
return walk_packages(path or default_path, prefix, onerror)
return wrapper
@contextlib.contextmanager
def restrict_walk_packages(self, path=None):
walk_packages = pkgutil.walk_packages
pkgutil.walk_packages = self._restricted_walk_packages(walk_packages,
path)
try:
yield
finally:
pkgutil.walk_packages = walk_packages
class PydocDocTest(unittest.TestCase):
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
@requires_docstrings
def test_html_doc(self):
result, doc_loc = get_pydoc_html(pydoc_mod)
mod_file = inspect.getabsfile(pydoc_mod)
mod_url = urllib.parse.quote(mod_file)
expected_html = expected_html_pattern % (
(mod_url, mod_file, doc_loc) +
expected_html_data_docstrings)
self.assertEqual(result, expected_html)
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
@requires_docstrings
def test_text_doc(self):
result, doc_loc = get_pydoc_text(pydoc_mod)
expected_text = expected_text_pattern % (
(doc_loc,) +
expected_text_data_docstrings +
(inspect.getabsfile(pydoc_mod),))
self.assertEqual(expected_text, result)
def test_text_enum_member_with_value_zero(self):
# Test issue #20654 to ensure enum member with value 0 can be
# displayed. It used to throw KeyError: 'zero'.
import enum
class BinaryInteger(enum.IntEnum):
zero = 0
one = 1
doc = pydoc.render_doc(BinaryInteger)
self.assertIn('', doc)
def test_issue8225(self):
# Test issue8225 to ensure no doc link appears for xml.etree
result, doc_loc = get_pydoc_text(xml.etree)
self.assertEqual(doc_loc, "", "MODULE DOCS incorrectly includes a link")
def test_getpager_with_stdin_none(self):
previous_stdin = sys.stdin
try:
sys.stdin = None
pydoc.getpager() # Shouldn't fail.
finally:
sys.stdin = previous_stdin
def test_non_str_name(self):
# issue14638
# Treat illegal (non-str) name like no name
class A:
__name__ = 42
class B:
pass
adoc = pydoc.render_doc(A())
bdoc = pydoc.render_doc(B())
self.assertEqual(adoc.replace("A", "B"), bdoc)
def test_not_here(self):
missing_module = "test.i_am_not_here"
result = str(run_pydoc(missing_module), 'ascii')
expected = missing_pattern % missing_module
self.assertEqual(expected, result,
"documentation for missing module found")
@unittest.skipIf(sys.flags.optimize >= 2,
'Docstrings are omitted with -OO and above')
def test_not_ascii(self):
result = run_pydoc('test.test_pydoc.nonascii', PYTHONIOENCODING='ascii')
encoded = nonascii.__doc__.encode('ascii', 'backslashreplace')
self.assertIn(encoded, result)
def test_input_strip(self):
missing_module = " test.i_am_not_here "
result = str(run_pydoc(missing_module), 'ascii')
expected = missing_pattern % missing_module.strip()
self.assertEqual(expected, result)
def test_stripid(self):
# test with strings, other implementations might have different repr()
stripid = pydoc.stripid
# strip the id
self.assertEqual(stripid(''),
'')
self.assertEqual(stripid(''),
'')
# nothing to strip, return the same text
self.assertEqual(stripid('42'), '42')
self.assertEqual(stripid(""),
"")
@unittest.skipIf(sys.flags.optimize >= 2,
'Docstrings are omitted with -O2 and above')
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
@requires_docstrings
def test_help_output_redirect(self):
# issue 940286, if output is set in Helper, then all output from
# Helper.help should be redirected
old_pattern = expected_text_pattern
getpager_old = pydoc.getpager
getpager_new = lambda: (lambda x: x)
self.maxDiff = None
buf = StringIO()
helper = pydoc.Helper(output=buf)
unused, doc_loc = get_pydoc_text(pydoc_mod)
module = "test.pydoc_mod"
help_header = """
Help on module test.pydoc_mod in test:
""".lstrip()
help_header = textwrap.dedent(help_header)
expected_help_pattern = help_header + expected_text_pattern
pydoc.getpager = getpager_new
try:
with captured_output('stdout') as output, \
captured_output('stderr') as err:
helper.help(module)
result = buf.getvalue().strip()
expected_text = expected_help_pattern % (
(doc_loc,) +
expected_text_data_docstrings +
(inspect.getabsfile(pydoc_mod),))
self.assertEqual('', output.getvalue())
self.assertEqual('', err.getvalue())
self.assertEqual(expected_text, result)
finally:
pydoc.getpager = getpager_old
def test_namedtuple_public_underscore(self):
NT = namedtuple('NT', ['abc', 'def'], rename=True)
with captured_stdout() as help_io:
pydoc.help(NT)
helptext = help_io.getvalue()
self.assertIn('_1', helptext)
self.assertIn('_replace', helptext)
self.assertIn('_asdict', helptext)
def test_synopsis(self):
self.addCleanup(unlink, TESTFN)
for encoding in ('ISO-8859-1', 'UTF-8'):
with open(TESTFN, 'w', encoding=encoding) as script:
if encoding != 'UTF-8':
print('#coding: {}'.format(encoding), file=script)
print('"""line 1: h\xe9', file=script)
print('line 2: hi"""', file=script)
synopsis = pydoc.synopsis(TESTFN, {})
self.assertEqual(synopsis, 'line 1: h\xe9')
@unittest.skipIf(sys.flags.optimize >= 2,
'Docstrings are omitted with -OO and above')
def test_synopsis_sourceless(self):
expected = os.__doc__.splitlines()[0]
filename = os.__cached__
synopsis = pydoc.synopsis(filename)
self.assertEqual(synopsis, expected)
def test_synopsis_sourceless_empty_doc(self):
with test.support.temp_cwd() as test_dir:
init_path = os.path.join(test_dir, 'foomod42.py')
cached_path = importlib.util.cache_from_source(init_path)
with open(init_path, 'w') as fobj:
fobj.write("foo = 1")
py_compile.compile(init_path)
synopsis = pydoc.synopsis(init_path, {})
self.assertIsNone(synopsis)
synopsis_cached = pydoc.synopsis(cached_path, {})
self.assertIsNone(synopsis_cached)
def test_splitdoc_with_description(self):
example_string = "I Am A Doc\n\n\nHere is my description"
self.assertEqual(pydoc.splitdoc(example_string),
('I Am A Doc', '\nHere is my description'))
def test_is_object_or_method(self):
doc = pydoc.Doc()
# Bound Method
self.assertTrue(pydoc._is_some_method(doc.fail))
# Method Descriptor
self.assertTrue(pydoc._is_some_method(int.__add__))
# String
self.assertFalse(pydoc._is_some_method("I am not a method"))
def test_is_package_when_not_package(self):
with test.support.temp_cwd() as test_dir:
self.assertFalse(pydoc.ispackage(test_dir))
def test_is_package_when_is_package(self):
with test.support.temp_cwd() as test_dir:
init_path = os.path.join(test_dir, '__init__.py')
open(init_path, 'w').close()
self.assertTrue(pydoc.ispackage(test_dir))
os.remove(init_path)
def test_allmethods(self):
# issue 17476: allmethods was no longer returning unbound methods.
# This test is a bit fragile in the face of changes to object and type,
# but I can't think of a better way to do it without duplicating the
# logic of the function under test.
class TestClass(object):
def method_returning_true(self):
return True
# What we expect to get back: everything on object...
expected = dict(vars(object))
# ...plus our unbound method...
expected['method_returning_true'] = TestClass.method_returning_true
# ...but not the non-methods on object.
del expected['__doc__']
del expected['__class__']
# inspect resolves descriptors on type into methods, but vars doesn't,
# so we need to update __subclasshook__.
expected['__subclasshook__'] = TestClass.__subclasshook__
methods = pydoc.allmethods(TestClass)
self.assertDictEqual(methods, expected)
class PydocImportTest(PydocBaseTest):
def setUp(self):
self.test_dir = os.mkdir(TESTFN)
self.addCleanup(rmtree, TESTFN)
importlib.invalidate_caches()
def test_badimport(self):
# This tests the fix for issue 5230, where if pydoc found the module
# but the module had an internal import error pydoc would report no doc
# found.
modname = 'testmod_xyzzy'
testpairs = (
('i_am_not_here', 'i_am_not_here'),
('test.i_am_not_here_either', 'test.i_am_not_here_either'),
('test.i_am_not_here.neither_am_i', 'test.i_am_not_here'),
('i_am_not_here.{}'.format(modname), 'i_am_not_here'),
('test.{}'.format(modname), 'test.{}'.format(modname)),
)
sourcefn = os.path.join(TESTFN, modname) + os.extsep + "py"
for importstring, expectedinmsg in testpairs:
with open(sourcefn, 'w') as f:
f.write("import {}\n".format(importstring))
result = run_pydoc(modname, PYTHONPATH=TESTFN).decode("ascii")
expected = badimport_pattern % (modname, expectedinmsg)
self.assertEqual(expected, result)
def test_apropos_with_bad_package(self):
# Issue 7425 - pydoc -k failed when bad package on path
pkgdir = os.path.join(TESTFN, "syntaxerr")
os.mkdir(pkgdir)
badsyntax = os.path.join(pkgdir, "__init__") + os.extsep + "py"
with open(badsyntax, 'w') as f:
f.write("invalid python syntax = $1\n")
with self.restrict_walk_packages(path=[TESTFN]):
with captured_stdout() as out:
with captured_stderr() as err:
pydoc.apropos('xyzzy')
# No result, no error
self.assertEqual(out.getvalue(), '')
self.assertEqual(err.getvalue(), '')
# The package name is still matched
with captured_stdout() as out:
with captured_stderr() as err:
pydoc.apropos('syntaxerr')
self.assertEqual(out.getvalue().strip(), 'syntaxerr')
self.assertEqual(err.getvalue(), '')
def test_apropos_with_unreadable_dir(self):
# Issue 7367 - pydoc -k failed when unreadable dir on path
self.unreadable_dir = os.path.join(TESTFN, "unreadable")
os.mkdir(self.unreadable_dir, 0)
self.addCleanup(os.rmdir, self.unreadable_dir)
# Note, on Windows the directory appears to be still
# readable so this is not really testing the issue there
with self.restrict_walk_packages(path=[TESTFN]):
with captured_stdout() as out:
with captured_stderr() as err:
pydoc.apropos('SOMEKEY')
# No result, no error
self.assertEqual(out.getvalue(), '')
self.assertEqual(err.getvalue(), '')
def test_apropos_empty_doc(self):
pkgdir = os.path.join(TESTFN, 'walkpkg')
os.mkdir(pkgdir)
self.addCleanup(rmtree, pkgdir)
init_path = os.path.join(pkgdir, '__init__.py')
with open(init_path, 'w') as fobj:
fobj.write("foo = 1")
current_mode = stat.S_IMODE(os.stat(pkgdir).st_mode)
try:
os.chmod(pkgdir, current_mode & ~stat.S_IEXEC)
with self.restrict_walk_packages(path=[TESTFN]), captured_stdout() as stdout:
pydoc.apropos('')
self.assertIn('walkpkg', stdout.getvalue())
finally:
os.chmod(pkgdir, current_mode)
@unittest.skip('causes undesireable side-effects (#20128)')
def test_modules(self):
# See Helper.listmodules().
num_header_lines = 2
num_module_lines_min = 5 # Playing it safe.
num_footer_lines = 3
expected = num_header_lines + num_module_lines_min + num_footer_lines
output = StringIO()
helper = pydoc.Helper(output=output)
helper('modules')
result = output.getvalue().strip()
num_lines = len(result.splitlines())
self.assertGreaterEqual(num_lines, expected)
@unittest.skip('causes undesireable side-effects (#20128)')
def test_modules_search(self):
# See Helper.listmodules().
expected = 'pydoc - '
output = StringIO()
helper = pydoc.Helper(output=output)
with captured_stdout() as help_io:
helper('modules pydoc')
result = help_io.getvalue()
self.assertIn(expected, result)
@unittest.skip('some buildbots are not cooperating (#20128)')
def test_modules_search_builtin(self):
expected = 'gc - '
output = StringIO()
helper = pydoc.Helper(output=output)
with captured_stdout() as help_io:
helper('modules garbage')
result = help_io.getvalue()
self.assertTrue(result.startswith(expected))
def test_importfile(self):
loaded_pydoc = pydoc.importfile(pydoc.__file__)
self.assertIsNot(loaded_pydoc, pydoc)
self.assertEqual(loaded_pydoc.__name__, 'pydoc')
self.assertEqual(loaded_pydoc.__file__, pydoc.__file__)
self.assertEqual(loaded_pydoc.__spec__, pydoc.__spec__)
class TestDescriptions(unittest.TestCase):
def test_module(self):
# Check that pydocfodder module can be described
from test import pydocfodder
doc = pydoc.render_doc(pydocfodder)
self.assertIn("pydocfodder", doc)
def test_class(self):
class C: "New-style class"
c = C()
self.assertEqual(pydoc.describe(C), 'class C')
self.assertEqual(pydoc.describe(c), 'C')
expected = 'C in module %s object' % __name__
self.assertIn(expected, pydoc.render_doc(c))
def test_builtin(self):
for name in ('str', 'str.translate', 'builtins.str',
'builtins.str.translate'):
# test low-level function
self.assertIsNotNone(pydoc.locate(name))
# test high-level function
try:
pydoc.render_doc(name)
except ImportError:
self.fail('finding the doc of {!r} failed'.format(name))
for name in ('notbuiltins', 'strrr', 'strr.translate',
'str.trrrranslate', 'builtins.strrr',
'builtins.str.trrranslate'):
self.assertIsNone(pydoc.locate(name))
self.assertRaises(ImportError, pydoc.render_doc, name)
@staticmethod
def _get_summary_line(o):
text = pydoc.plain(pydoc.render_doc(o))
lines = text.split('\n')
assert len(lines) >= 2
return lines[2]
# these should include "self"
def test_unbound_python_method(self):
self.assertEqual(self._get_summary_line(textwrap.TextWrapper.wrap),
"wrap(self, text)")
@requires_docstrings
def test_unbound_builtin_method(self):
self.assertEqual(self._get_summary_line(_pickle.Pickler.dump),
"dump(self, obj, /)")
# these no longer include "self"
def test_bound_python_method(self):
t = textwrap.TextWrapper()
self.assertEqual(self._get_summary_line(t.wrap),
"wrap(text) method of textwrap.TextWrapper instance")
@requires_docstrings
def test_bound_builtin_method(self):
s = StringIO()
p = _pickle.Pickler(s)
self.assertEqual(self._get_summary_line(p.dump),
"dump(obj, /) method of _pickle.Pickler instance")
# this should *never* include self!
@requires_docstrings
def test_module_level_callable(self):
self.assertEqual(self._get_summary_line(os.stat),
"stat(path, *, dir_fd=None, follow_symlinks=True)")
@unittest.skipUnless(threading, 'Threading required for this test.')
class PydocServerTest(unittest.TestCase):
"""Tests for pydoc._start_server"""
def test_server(self):
# Minimal test that starts the server, then stops it.
def my_url_handler(url, content_type):
text = 'the URL sent was: (%s, %s)' % (url, content_type)
return text
serverthread = pydoc._start_server(my_url_handler, port=0)
self.assertIn('localhost', serverthread.docserver.address)
starttime = time.time()
timeout = 1 #seconds
while serverthread.serving:
time.sleep(.01)
if serverthread.serving and time.time() - starttime > timeout:
serverthread.stop()
break
self.assertEqual(serverthread.error, None)
class PydocUrlHandlerTest(PydocBaseTest):
"""Tests for pydoc._url_handler"""
def test_content_type_err(self):
f = pydoc._url_handler
self.assertRaises(TypeError, f, 'A', '')
self.assertRaises(TypeError, f, 'B', 'foobar')
def test_url_requests(self):
# Test for the correct title in the html pages returned.
# This tests the different parts of the URL handler without
# getting too picky about the exact html.
requests = [
("", "Pydoc: Index of Modules"),
("get?key=", "Pydoc: Index of Modules"),
("index", "Pydoc: Index of Modules"),
("topics", "Pydoc: Topics"),
("keywords", "Pydoc: Keywords"),
("pydoc", "Pydoc: module pydoc"),
("get?key=pydoc", "Pydoc: module pydoc"),
("search?key=pydoc", "Pydoc: Search Results"),
("topic?key=def", "Pydoc: KEYWORD def"),
("topic?key=STRINGS", "Pydoc: TOPIC STRINGS"),
("foobar", "Pydoc: Error - foobar"),
("getfile?key=foobar", "Pydoc: Error - getfile?key=foobar"),
]
with self.restrict_walk_packages():
for url, title in requests:
text = pydoc._url_handler(url, "text/html")
result = get_html_title(text)
self.assertEqual(result, title, text)
path = string.__file__
title = "Pydoc: getfile " + path
url = "getfile?key=" + path
text = pydoc._url_handler(url, "text/html")
result = get_html_title(text)
self.assertEqual(result, title)
class TestHelper(unittest.TestCase):
def test_keywords(self):
self.assertEqual(sorted(pydoc.Helper.keywords),
sorted(keyword.kwlist))
class PydocWithMetaClasses(unittest.TestCase):
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
def test_DynamicClassAttribute(self):
class Meta(type):
def __getattr__(self, name):
if name == 'ham':
return 'spam'
return super().__getattr__(name)
class DA(metaclass=Meta):
@types.DynamicClassAttribute
def ham(self):
return 'eggs'
expected_text_data_docstrings = tuple('\n | ' + s if s else ''
for s in expected_data_docstrings)
output = StringIO()
helper = pydoc.Helper(output=output)
helper(DA)
expected_text = expected_dynamicattribute_pattern % (
(__name__,) + expected_text_data_docstrings[:2])
result = output.getvalue().strip()
self.assertEqual(expected_text, result)
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
def test_virtualClassAttributeWithOneMeta(self):
class Meta(type):
def __dir__(cls):
return ['__class__', '__module__', '__name__', 'LIFE']
def __getattr__(self, name):
if name =='LIFE':
return 42
return super().__getattr(name)
class Class(metaclass=Meta):
pass
output = StringIO()
helper = pydoc.Helper(output=output)
helper(Class)
expected_text = expected_virtualattribute_pattern1 % __name__
result = output.getvalue().strip()
self.assertEqual(expected_text, result)
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
def test_virtualClassAttributeWithTwoMeta(self):
class Meta1(type):
def __dir__(cls):
return ['__class__', '__module__', '__name__', 'one']
def __getattr__(self, name):
if name =='one':
return 1
return super().__getattr__(name)
class Meta2(type):
def __dir__(cls):
return ['__class__', '__module__', '__name__', 'two']
def __getattr__(self, name):
if name =='two':
return 2
return super().__getattr__(name)
class Meta3(Meta1, Meta2):
def __dir__(cls):
return list(sorted(set(
['__class__', '__module__', '__name__', 'three'] +
Meta1.__dir__(cls) + Meta2.__dir__(cls))))
def __getattr__(self, name):
if name =='three':
return 3
return super().__getattr__(name)
class Class1(metaclass=Meta1):
pass
class Class2(Class1, metaclass=Meta3):
pass
fail1 = fail2 = False
output = StringIO()
helper = pydoc.Helper(output=output)
helper(Class1)
expected_text1 = expected_virtualattribute_pattern2 % __name__
result1 = output.getvalue().strip()
self.assertEqual(expected_text1, result1)
output = StringIO()
helper = pydoc.Helper(output=output)
helper(Class2)
expected_text2 = expected_virtualattribute_pattern3 % __name__
result2 = output.getvalue().strip()
self.assertEqual(expected_text2, result2)
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
@unittest.skipIf(hasattr(sys, 'gettrace') and sys.gettrace(),
'trace function introduces __locals__ unexpectedly')
def test_buggy_dir(self):
class M(type):
def __dir__(cls):
return ['__class__', '__name__', 'missing', 'here']
class C(metaclass=M):
here = 'present!'
output = StringIO()
helper = pydoc.Helper(output=output)
helper(C)
expected_text = expected_missingattribute_pattern % __name__
result = output.getvalue().strip()
self.assertEqual(expected_text, result)
@reap_threads
def test_main():
try:
test.support.run_unittest(PydocDocTest,
PydocImportTest,
TestDescriptions,
PydocServerTest,
PydocUrlHandlerTest,
TestHelper,
PydocWithMetaClasses,
)
finally:
reap_children()
if __name__ == "__main__":
test_main()