") title, _, _ = title.partition("

import os import sys 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 tempfile import test.support import time import types import typing import unittest import urllib.parse import xml.etree import xml.etree.ElementTree import textwrap from io import StringIO from collections import namedtuple from test.support.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 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 | __annotations__ = {'NO_MEANING': } \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 = """

test.pydoc_mod (version 1.2.3.4)

index
%s%s

This is a test module for test_pydoc

\x20\x20\x20\x20

Classes


builtins.object

A
B
C

\x20\x20\x20\x20

class A(builtins.object)
    Hello and goodbye

Methods defined here:

__init__()
Wow, I have no function!

Data descriptors defined here:

__dict__

%s

__weakref__

%s

\x20\x20\x20\x20

class B(builtins.object)
    Data descriptors defined here:

__dict__

%s

__weakref__

%s

Data and other attributes defined here:

NO_MEANING = 'eggs'

__annotations__ = {'NO_MEANING': <class 'str'>}

\x20\x20\x20\x20

class C(builtins.object)
    Methods defined here:

get_answer(self)
Return say_no()

is_it_true(self)
Return self.get_answer()

say_no(self)

Data descriptors defined here:

__dict__

dictionary for instance variables (if defined)

__weakref__

list of weak references to the object (if defined)

\x20\x20\x20\x20

Functions

doc_func()
This function solves all of the world's problems: hunger lack of Python war

nodoc_func()

\x20\x20\x20\x20

Data
__xyz__ = 'X, Y and Z'

\x20\x20\x20\x20

Author
Benjamin Peterson

\x20\x20\x20\x20

Credits
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 - ModuleNotFoundError: 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_link(module): "Returns a documentation web link of a module" abspath = os.path.abspath dirname = os.path.dirname basedir = dirname(dirname(abspath(__file__))) doc = pydoc.TextDoc() loc = doc.getdocloc(module, basedir=basedir) return 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 def call_url_handler(self, url, expected_title): text = pydoc._url_handler(url, "text/html") result = get_html_title(text) # Check the title to ensure an unexpected error page was not returned self.assertEqual(result, expected_title, text) return text class PydocDocTest(unittest.TestCase): maxDiff = None @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_mixed_case_module_names_are_lower_cased(self): # issue16484 doc_link = get_pydoc_link(xml.etree.ElementTree) self.assertIn('xml.etree.elementtree', doc_link) 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(""), "") def test_builtin_with_more_than_four_children(self): """Tests help on builtin object which have more than four child classes. When running help() on a builtin class which has child classes, it should contain a "Built-in subclasses" section and only 4 classes should be displayed with a hint on how many more subclasses are present. For example: >>> help(object) Help on class object in module builtins: class object | The most base type | | Built-in subclasses: | async_generator | BaseException | builtin_function_or_method | bytearray | ... and 82 other subclasses """ doc = pydoc.TextDoc() text = doc.docclass(object) snip = (" | Built-in subclasses:\n" " | async_generator\n" " | BaseException\n" " | builtin_function_or_method\n" " | bytearray\n" " | ... and \\d+ other subclasses") self.assertRegex(text, snip) def test_builtin_with_child(self): """Tests help on builtin object which have only child classes. When running help() on a builtin class which has child classes, it should contain a "Built-in subclasses" section. For example: >>> help(ArithmeticError) Help on class ArithmeticError in module builtins: class ArithmeticError(Exception) | Base class for arithmetic errors. | ... | | Built-in subclasses: | FloatingPointError | OverflowError | ZeroDivisionError """ doc = pydoc.TextDoc() text = doc.docclass(ArithmeticError) snip = (" | Built-in subclasses:\n" " | FloatingPointError\n" " | OverflowError\n" " | ZeroDivisionError") self.assertIn(snip, text) def test_builtin_with_grandchild(self): """Tests help on builtin classes which have grandchild classes. When running help() on a builtin class which has child classes, it should contain a "Built-in subclasses" section. However, if it also has grandchildren, these should not show up on the subclasses section. For example: >>> help(Exception) Help on class Exception in module builtins: class Exception(BaseException) | Common base class for all non-exit exceptions. | ... | | Built-in subclasses: | ArithmeticError | AssertionError | AttributeError ... """ doc = pydoc.TextDoc() text = doc.docclass(Exception) snip = (" | Built-in subclasses:\n" " | ArithmeticError\n" " | AssertionError\n" " | AttributeError") self.assertIn(snip, text) # Testing that the grandchild ZeroDivisionError does not show up self.assertNotIn('ZeroDivisionError', text) def test_builtin_no_child(self): """Tests help on builtin object which have no child classes. When running help() on a builtin class which has no child classes, it should not contain any "Built-in subclasses" section. For example: >>> help(ZeroDivisionError) Help on class ZeroDivisionError in module builtins: class ZeroDivisionError(ArithmeticError) | Second argument to a division or modulo operation was zero. | | Method resolution order: | ZeroDivisionError | ArithmeticError | Exception | BaseException | object | | Methods defined here: ... """ doc = pydoc.TextDoc() text = doc.docclass(ZeroDivisionError) # Testing that the subclasses section does not appear self.assertNotIn('Built-in subclasses', text) def test_builtin_on_metaclasses(self): """Tests help on metaclasses. When running help() on a metaclasses such as type, it should not contain any "Built-in subclasses" section. """ doc = pydoc.TextDoc() text = doc.docclass(type) # Testing that the subclasses section does not appear self.assertNotIn('Built-in subclasses', text) @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_fields(self): Person = namedtuple('Person', ['nickname', 'firstname']) with captured_stdout() as help_io: pydoc.help(Person) helptext = help_io.getvalue() self.assertIn("nickname", helptext) self.assertIn("firstname", helptext) self.assertIn("Alias for field number 0", helptext) self.assertIn("Alias for field number 1", helptext) 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_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__ and __init_subclass__. expected['__subclasshook__'] = TestClass.__subclasshook__ expected['__init_subclass__'] = TestClass.__init_subclass__ methods = pydoc.allmethods(TestClass) self.assertDictEqual(methods, expected) def test_method_aliases(self): class A: def tkraise(self, aboveThis=None): """Raise this widget in the stacking order.""" lift = tkraise def a_size(self): """Return size""" class B(A): def itemconfigure(self, tagOrId, cnf=None, **kw): """Configure resources of an item TAGORID.""" itemconfig = itemconfigure b_size = A.a_size doc = pydoc.render_doc(B) # clean up the extra text formatting that pydoc performs doc = re.sub('\b.', '', doc) self.assertEqual(doc, '''\ Python Library Documentation: class B in module %s class B(A) | Method resolution order: | B | A | builtins.object |\x20\x20 | Methods defined here: |\x20\x20 | b_size = a_size(self) |\x20\x20 | itemconfig = itemconfigure(self, tagOrId, cnf=None, **kw) |\x20\x20 | itemconfigure(self, tagOrId, cnf=None, **kw) | Configure resources of an item TAGORID. |\x20\x20 | ---------------------------------------------------------------------- | Methods inherited from A: |\x20\x20 | a_size(self) | Return size |\x20\x20 | lift = tkraise(self, aboveThis=None) |\x20\x20 | tkraise(self, aboveThis=None) | Raise this widget in the stacking order. |\x20\x20 | ---------------------------------------------------------------------- | Data descriptors inherited from A: |\x20\x20 | __dict__ | dictionary for instance variables (if defined) |\x20\x20 | __weakref__ | list of weak references to the object (if defined) ''' % __name__) doc = pydoc.render_doc(B, renderer=pydoc.HTMLDoc()) self.assertEqual(doc, '''\ Python Library Documentation: class B in module %s

\x20\x20\x20\x20

class B(A)

Method resolution order:

B

A

builtins.object

Methods defined here:

b_size = a_size(self)

itemconfig = itemconfigure(self, tagOrId, cnf=None, **kw)

itemconfigure(self, tagOrId, cnf=None, **kw)
Configure resources of an item TAGORID.

Methods inherited from A:

a_size(self)
Return size

lift = tkraise(self, aboveThis=None)

tkraise(self, aboveThis=None)
Raise this widget in the stacking order.

Data descriptors inherited from A:

__dict__

dictionary for instance variables (if defined)

__weakref__

list of weak references to the object (if defined)

\ ''' % __name__) 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) def test_url_search_package_error(self): # URL handler search should cope with packages that raise exceptions pkgdir = os.path.join(TESTFN, "test_error_package") os.mkdir(pkgdir) init = os.path.join(pkgdir, "__init__.py") with open(init, "wt", encoding="ascii") as f: f.write("""raise ValueError("ouch")\n""") with self.restrict_walk_packages(path=[TESTFN]): # Package has to be importable for the error to have any effect saved_paths = tuple(sys.path) sys.path.insert(0, TESTFN) try: with self.assertRaisesRegex(ValueError, "ouch"): import test_error_package # Sanity check text = self.call_url_handler("search?key=test_error_package", "Pydoc: Search Results") found = ('' 'test_error_package') self.assertIn(found, text) finally: sys.path[:] = saved_paths @unittest.skip('causes undesirable 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 undesirable 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_typing_pydoc(self): def foo(data: typing.List[typing.Any], x: int) -> typing.Iterator[typing.Tuple[int, typing.Any]]: ... T = typing.TypeVar('T') class C(typing.Generic[T], typing.Mapping[int, str]): ... self.assertEqual(pydoc.render_doc(foo).splitlines()[-1], 'f\x08fo\x08oo\x08o(data: List[Any], x: int)' ' -> Iterator[Tuple[int, Any]]') self.assertEqual(pydoc.render_doc(C).splitlines()[2], 'class C\x08C(collections.abc.Mapping, typing.Generic)') 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] @staticmethod def _get_summary_lines(o): text = pydoc.plain(pydoc.render_doc(o)) lines = text.split('\n') return '\n'.join(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") def test_field_order_for_named_tuples(self): Person = namedtuple('Person', ['nickname', 'firstname', 'agegroup']) s = pydoc.render_doc(Person) self.assertLess(s.index('nickname'), s.index('firstname')) self.assertLess(s.index('firstname'), s.index('agegroup')) class NonIterableFields: _fields = None class NonHashableFields: _fields = [[]] # Make sure these doesn't fail pydoc.render_doc(NonIterableFields) pydoc.render_doc(NonHashableFields) @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)") @requires_docstrings def test_staticmethod(self): class X: @staticmethod def sm(x, y): '''A static method''' ... self.assertEqual(self._get_summary_lines(X.__dict__['sm']), "") self.assertEqual(self._get_summary_lines(X.sm), """\ sm(x, y) A static method """) self.assertIn(""" | Static methods defined here: |\x20\x20 | sm(x, y) | A static method """, pydoc.plain(pydoc.render_doc(X))) @requires_docstrings def test_classmethod(self): class X: @classmethod def cm(cls, x): '''A class method''' ... self.assertEqual(self._get_summary_lines(X.__dict__['cm']), "") self.assertEqual(self._get_summary_lines(X.cm), """\ cm(x) method of builtins.type instance A class method """) self.assertIn(""" | Class methods defined here: |\x20\x20 | cm(x) from builtins.type | A class method """, pydoc.plain(pydoc.render_doc(X))) @requires_docstrings def test_getset_descriptor(self): # Currently these attributes are implemented as getset descriptors # in CPython. self.assertEqual(self._get_summary_line(int.numerator), "numerator") self.assertEqual(self._get_summary_line(float.real), "real") self.assertEqual(self._get_summary_line(Exception.args), "args") self.assertEqual(self._get_summary_line(memoryview.obj), "obj") @requires_docstrings def test_member_descriptor(self): # Currently these attributes are implemented as member descriptors # in CPython. self.assertEqual(self._get_summary_line(complex.real), "real") self.assertEqual(self._get_summary_line(range.start), "start") self.assertEqual(self._get_summary_line(slice.start), "start") self.assertEqual(self._get_summary_line(property.fget), "fget") self.assertEqual(self._get_summary_line(StopIteration.value), "value") @requires_docstrings def test_slot_descriptor(self): class Point: __slots__ = 'x', 'y' self.assertEqual(self._get_summary_line(Point.x), "x") @requires_docstrings def test_dict_attr_descriptor(self): class NS: pass self.assertEqual(self._get_summary_line(NS.__dict__['__dict__']), "__dict__") @requires_docstrings def test_structseq_member_descriptor(self): self.assertEqual(self._get_summary_line(type(sys.hash_info).width), "width") self.assertEqual(self._get_summary_line(type(sys.flags).debug), "debug") self.assertEqual(self._get_summary_line(type(sys.version_info).major), "major") self.assertEqual(self._get_summary_line(type(sys.float_info).max), "max") @requires_docstrings def test_namedtuple_field_descriptor(self): Box = namedtuple('Box', ('width', 'height')) self.assertEqual(self._get_summary_lines(Box.width), """\ Alias for field number 0 """) @requires_docstrings def test_property(self): class Rect: @property def area(self): '''Area of the rect''' return self.w * self.h self.assertEqual(self._get_summary_lines(Rect.area), """\ Area of the rect """) self.assertIn(""" | area | Area of the rect """, pydoc.plain(pydoc.render_doc(Rect))) @requires_docstrings def test_custom_non_data_descriptor(self): class Descr: def __get__(self, obj, cls): if obj is None: return self return 42 class X: attr = Descr() self.assertEqual(self._get_summary_lines(X.attr), """\ .Descr object>""") X.attr.__doc__ = 'Custom descriptor' self.assertEqual(self._get_summary_lines(X.attr), """\ .Descr object>""") X.attr.__name__ = 'foo' self.assertEqual(self._get_summary_lines(X.attr), """\ foo(...) Custom descriptor """) @requires_docstrings def test_custom_data_descriptor(self): class Descr: def __get__(self, obj, cls): if obj is None: return self return 42 def __set__(self, obj, cls): 1/0 class X: attr = Descr() self.assertEqual(self._get_summary_lines(X.attr), "") X.attr.__doc__ = 'Custom descriptor' self.assertEqual(self._get_summary_lines(X.attr), """\ Custom descriptor """) X.attr.__name__ = 'foo' self.assertEqual(self._get_summary_lines(X.attr), """\ foo Custom descriptor """) def test_async_annotation(self): async def coro_function(ign) -> int: return 1 text = pydoc.plain(pydoc.plaintext.document(coro_function)) self.assertIn('async coro_function', text) html = pydoc.HTMLDoc().document(coro_function) self.assertIn( 'async coro_function', html) def test_async_generator_annotation(self): async def an_async_generator(): yield 1 text = pydoc.plain(pydoc.plaintext.document(an_async_generator)) self.assertIn('async an_async_generator', text) html = pydoc.HTMLDoc().document(an_async_generator) self.assertIn( 'async an_async_generator', html) 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, hostname='0.0.0.0', port=0) self.assertIn('0.0.0.0', serverthread.docserver.address) starttime = time.monotonic() timeout = 1 #seconds while serverthread.serving: time.sleep(.01) if serverthread.serving and time.monotonic() - 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"), ] with self.restrict_walk_packages(): for url, title in requests: self.call_url_handler(url, 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) def test_resolve_false(self): # Issue #23008: pydoc enum.{,Int}Enum failed # because bool(enum.Enum) is False. with captured_stdout() as help_io: pydoc.help('enum.Enum') helptext = help_io.getvalue() self.assertIn('class Enum', helptext) class TestInternalUtilities(unittest.TestCase): def setUp(self): tmpdir = tempfile.TemporaryDirectory() self.argv0dir = tmpdir.name self.argv0 = os.path.join(tmpdir.name, "nonexistent") self.addCleanup(tmpdir.cleanup) self.abs_curdir = abs_curdir = os.getcwd() self.curdir_spellings = ["", os.curdir, abs_curdir] def _get_revised_path(self, given_path, argv0=None): # Checking that pydoc.cli() actually calls pydoc._get_revised_path() # is handled via code review (at least for now). if argv0 is None: argv0 = self.argv0 return pydoc._get_revised_path(given_path, argv0) def _get_starting_path(self): # Get a copy of sys.path without the current directory. clean_path = sys.path.copy() for spelling in self.curdir_spellings: for __ in range(clean_path.count(spelling)): clean_path.remove(spelling) return clean_path def test_sys_path_adjustment_adds_missing_curdir(self): clean_path = self._get_starting_path() expected_path = [self.abs_curdir] + clean_path self.assertEqual(self._get_revised_path(clean_path), expected_path) def test_sys_path_adjustment_removes_argv0_dir(self): clean_path = self._get_starting_path() expected_path = [self.abs_curdir] + clean_path leading_argv0dir = [self.argv0dir] + clean_path self.assertEqual(self._get_revised_path(leading_argv0dir), expected_path) trailing_argv0dir = clean_path + [self.argv0dir] self.assertEqual(self._get_revised_path(trailing_argv0dir), expected_path) def test_sys_path_adjustment_protects_pydoc_dir(self): def _get_revised_path(given_path): return self._get_revised_path(given_path, argv0=pydoc.__file__) clean_path = self._get_starting_path() leading_argv0dir = [self.argv0dir] + clean_path expected_path = [self.abs_curdir] + leading_argv0dir self.assertEqual(_get_revised_path(leading_argv0dir), expected_path) trailing_argv0dir = clean_path + [self.argv0dir] expected_path = [self.abs_curdir] + trailing_argv0dir self.assertEqual(_get_revised_path(trailing_argv0dir), expected_path) def test_sys_path_adjustment_when_curdir_already_included(self): clean_path = self._get_starting_path() for spelling in self.curdir_spellings: with self.subTest(curdir_spelling=spelling): # If curdir is already present, no alterations are made at all leading_curdir = [spelling] + clean_path self.assertIsNone(self._get_revised_path(leading_curdir)) trailing_curdir = clean_path + [spelling] self.assertIsNone(self._get_revised_path(trailing_curdir)) leading_argv0dir = [self.argv0dir] + leading_curdir self.assertIsNone(self._get_revised_path(leading_argv0dir)) trailing_argv0dir = trailing_curdir + [self.argv0dir] self.assertIsNone(self._get_revised_path(trailing_argv0dir)) @reap_threads def test_main(): try: test.support.run_unittest(PydocDocTest, PydocImportTest, TestDescriptions, PydocServerTest, PydocUrlHandlerTest, TestHelper, PydocWithMetaClasses, TestInternalUtilities, ) finally: reap_children() if __name__ == "__main__": test_main()