import os
import sys
import difflib
import __builtin__
import re
import pydoc
import contextlib
import inspect
import keyword
import pkgutil
import unittest
import xml.etree
import types
import test.test_support
from collections import namedtuple
from test.script_helper import assert_python_ok
from test.test_support import (
TESTFN, rmtree, reap_children, captured_stdout, captured_stderr)
from test import pydoc_mod
if test.test_support.HAVE_DOCSTRINGS:
expected_data_docstrings = (
'dictionary for instance variables (if defined)',
'list of weak references to the object (if defined)',
)
else:
expected_data_docstrings = ('', '')
expected_text_pattern = \
"""
NAME
test.pydoc_mod - This is a test module for test_pydoc
FILE
%s
%s
CLASSES
__builtin__.object
B
A
\x20\x20\x20\x20
class A
| Hello and goodbye
|\x20\x20
| Methods defined here:
|\x20\x20
| __init__()
| Wow, I have no function!
\x20\x20\x20\x20
class B(__builtin__.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
__author__ = 'Benjamin Peterson'
__credits__ = 'Nobody'
__version__ = '1.2.3.4'
VERSION
1.2.3.4
AUTHOR
Benjamin Peterson
CREDITS
Nobody
""".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
| | |
- __builtin__.object
-
- B
- A
class A |
\x20\x20\x20\x20
| |
Hello and goodbye
|
| |
Methods defined here:
- __init__()
- Wow, I have no function!
|
class B(__builtin__.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
| | |
__author__ = 'Benjamin Peterson'
__credits__ = 'Nobody'
__version__ = '1.2.3.4' |
Author |
\x20\x20\x20\x20
| | |
Benjamin Peterson |
Credits |
\x20\x20\x20\x20
| | |
Nobody |
""".strip()
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 - : No module named %s"
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)
# cleanup the extra text formatting that pydoc preforms
patt = re.compile('\b.')
output = patt.sub('', output)
return output.strip(), loc
def print_diffs(text1, text2):
"Prints unified diffs for two texts"
lines1 = text1.splitlines(True)
lines2 = text2.splitlines(True)
diffs = difflib.unified_diff(lines1, lines2, n=0, fromfile='expected',
tofile='got')
print '\n' + ''.join(diffs)
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")
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")
def test_text_doc(self):
result, doc_loc = get_pydoc_text(pydoc_mod)
expected_text = expected_text_pattern % (
(inspect.getabsfile(pydoc_mod), doc_loc) +
expected_text_data_docstrings)
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 = run_pydoc(missing_module)
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 = run_pydoc(missing_module)
expected = missing_pattern % missing_module.strip()
self.assertEqual(expected, result,
"white space was not stripped from module name "
"or other error output mismatch")
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(""),
"")
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', 'i_am_not_here_either'),
('test.i_am_not_here.neither_am_i', 'i_am_not_here.neither_am_i'),
('i_am_not_here.{}'.format(modname),
'i_am_not_here.{}'.format(modname)),
('test.{}'.format(modname), 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)
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_classic_class(self):
class C: "Classic class"
c = C()
self.assertEqual(pydoc.describe(C), 'class C')
self.assertEqual(pydoc.describe(c), 'instance of C')
expected = 'instance of C in module %s' % __name__
self.assertIn(expected, pydoc.render_doc(c))
def test_class(self):
class C(object): "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_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)
@unittest.skipUnless(test.test_support.have_unicode,
"test requires unicode support")
class TestUnicode(unittest.TestCase):
def setUp(self):
# Better not to use unicode escapes in literals, lest the
# parser choke on it if Python has been built without
# unicode support.
self.Q = types.ModuleType(
'Q', 'Rational numbers: \xe2\x84\x9a'.decode('utf8'))
self.Q.__version__ = '\xe2\x84\x9a'.decode('utf8')
self.Q.__date__ = '\xe2\x84\x9a'.decode('utf8')
self.Q.__author__ = '\xe2\x84\x9a'.decode('utf8')
self.Q.__credits__ = '\xe2\x84\x9a'.decode('utf8')
self.assertIsInstance(self.Q.__doc__, unicode)
def test_render_doc(self):
# render_doc is robust against unicode in docstrings
doc = pydoc.render_doc(self.Q)
self.assertIsInstance(doc, str)
def test_encode(self):
# _encode is robust against characters out the specified encoding
self.assertEqual(pydoc._encode(self.Q.__doc__, 'ascii'), 'Rational numbers: ℚ')
def test_pipepager(self):
# pipepager does not choke on unicode
doc = pydoc.render_doc(self.Q)
saved, os.popen = os.popen, open
try:
with test.test_support.temp_cwd():
pydoc.pipepager(doc, 'pipe')
self.assertEqual(open('pipe').read(), pydoc._encode(doc))
finally:
os.popen = saved
def test_tempfilepager(self):
# tempfilepager does not choke on unicode
doc = pydoc.render_doc(self.Q)
output = {}
def mock_system(cmd):
filename = cmd.strip()[1:-1]
self.assertEqual('"' + filename + '"', cmd.strip())
output['content'] = open(filename).read()
saved, os.system = os.system, mock_system
try:
pydoc.tempfilepager(doc, '')
self.assertEqual(output['content'], pydoc._encode(doc))
finally:
os.system = saved
def test_plainpager(self):
# plainpager does not choke on unicode
doc = pydoc.render_doc(self.Q)
# Note: captured_stdout is too permissive when it comes to
# unicode, and using it here would make the test always
# pass.
with test.test_support.temp_cwd():
with open('output', 'w') as f:
saved, sys.stdout = sys.stdout, f
try:
pydoc.plainpager(doc)
finally:
sys.stdout = saved
self.assertIn('Rational numbers:', open('output').read())
def test_ttypager(self):
# ttypager does not choke on unicode
doc = pydoc.render_doc(self.Q)
# Test ttypager
with test.test_support.temp_cwd(), test.test_support.captured_stdin():
with open('output', 'w') as f:
saved, sys.stdout = sys.stdout, f
try:
pydoc.ttypager(doc)
finally:
sys.stdout = saved
self.assertIn('Rational numbers:', open('output').read())
def test_htmlpage(self):
# html.page does not choke on unicode
with test.test_support.temp_cwd():
with captured_stdout() as output:
pydoc.writedoc(self.Q)
self.assertEqual(output.getvalue(), 'wrote Q.html\n')
class TestHelper(unittest.TestCase):
def test_keywords(self):
self.assertEqual(sorted(pydoc.Helper.keywords),
sorted(keyword.kwlist))
def test_builtin(self):
for name in ('str', 'str.translate', '__builtin__.str',
'__builtin__.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 ('not__builtin__', 'strrr', 'strr.translate',
'str.trrrranslate', '__builtin__.strrr',
'__builtin__.str.trrranslate'):
self.assertIsNone(pydoc.locate(name))
self.assertRaises(ImportError, pydoc.render_doc, name)
def test_main():
try:
test.test_support.run_unittest(PydocDocTest,
PydocImportTest,
TestDescriptions,
TestUnicode,
TestHelper)
finally:
reap_children()
if __name__ == "__main__":
test_main()