import os
import sys
import builtins
import contextlib
import difflib
import inspect
import pydoc
import keyword
import pkgutil
import re
import string
import test.support
import time
import unittest
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
)
from test import pydoc_mod
try:
import threading
except ImportError:
threading = None
# Just in case sys.modules["test"] has the optional attribute __loader__.
if hasattr(pydoc_mod, "__loader__"):
del pydoc_mod.__loader__
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
\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'
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
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 '%s'"
# output pattern for module with bad imports
badimport_pattern = "problem in %s - ImportError: No module named %r"
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 print_diffs(text1, text2):
"Prints unified diffs for two texts"
# XXX now obsolete, use unittest built-in support
lines1 = text1.splitlines(keepends=True)
lines2 = text2.splitlines(keepends=True)
diffs = difflib.unified_diff(lines1, lines2, n=0, fromfile='expected',
tofile='got')
print('\n' + ''.join(diffs))
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')
def test_html_doc(self):
result, doc_loc = get_pydoc_html(pydoc_mod)
mod_file = inspect.getabsfile(pydoc_mod)
if sys.platform == 'win32':
import nturl2path
mod_url = nturl2path.pathname2url(mod_file)
else:
mod_url = mod_file
expected_html = expected_html_pattern % (
(mod_url, mod_file, doc_loc) +
expected_html_data_docstrings)
if result != expected_html:
print_diffs(expected_html, result)
self.fail("outputs are not equal, see diff above")
@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_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),))
if result != expected_text:
print_diffs(expected_text, result)
self.fail("outputs are not equal, see diff above")
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_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")
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')
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:
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')
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)
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(), '')
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(o))
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)
@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)
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))
@reap_threads
def test_main():
try:
test.support.run_unittest(PydocDocTest,
PydocImportTest,
TestDescriptions,
PydocServerTest,
PydocUrlHandlerTest,
TestHelper,
)
finally:
reap_children()
if __name__ == "__main__":
test_main()