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 types 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 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 = """
 
 
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

\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'

\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 '%s'" # 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 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: 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') 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) 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)) 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() if result != expected_text: print_diffs(expected_text, 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_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() if result != expected_text: print_diffs(expected_text, 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_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() if result1 != expected_text1: print_diffs(expected_text1, result1) fail1 = True output = StringIO() helper = pydoc.Helper(output=output) helper(Class2) expected_text2 = expected_virtualattribute_pattern3 % __name__ result2 = output.getvalue().strip() if result2 != expected_text2: print_diffs(expected_text2, result2) fail2 = True if fail1 or fail2: 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_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() if result != expected_text: print_diffs(expected_text, result) self.fail("outputs are not equal, see diff above") @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()