import os import sys import difflib import inspect import pydoc import re import string import subprocess import test.support import time import unittest import xml.etree import textwrap from io import StringIO from collections import namedtuple from contextlib import contextmanager from test.support import TESTFN, forget, rmtree, EnvironmentVarGuard, \ reap_children, captured_output, captured_stdout from test import pydoc_mod # Just in case sys.modules["test"] has the optional attribute __loader__. if hasattr(pydoc_mod, "__loader__"): del pydoc_mod.__loader__ 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__ | dictionary for instance variables (if defined) |\x20\x20 | __weakref__ | list of weak references to the object (if defined) \x20\x20\x20\x20 class B(builtins.object) | 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) |\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_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__
dictionary for instance variables (if defined)
__weakref__
list of weak references to the object (if defined)

\x20\x20\x20\x20
 
class B(builtins.object)
     Data descriptors defined here:
__dict__
dictionary for instance variables (if defined)
__weakref__
list of weak references to the object (if defined)

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 # 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 %s" def run_pydoc(module_name, *args): """ Runs pydoc on the specified module. Returns the stripped output of pydoc. """ cmd = [sys.executable, pydoc.__file__, " ".join(args), module_name] try: output = subprocess.Popen(cmd, stdout=subprocess.PIPE).communicate()[0] return output.strip() finally: reap_children() 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(True) lines2 = text2.splitlines(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 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) 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 % \ (doc_loc, 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_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_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), ) @contextmanager def newdirinpath(dir): os.mkdir(dir) sys.path.insert(0, dir) yield sys.path.pop(0) rmtree(dir) with newdirinpath(TESTFN), EnvironmentVarGuard() as env: env['PYTHONPATH'] = TESTFN fullmodname = os.path.join(TESTFN, modname) sourcefn = fullmodname + os.extsep + "py" for importstring, expectedinmsg in testpairs: with open(sourcefn, 'w') as f: f.write("import {}\n".format(importstring)) try: result = run_pydoc(modname).decode("ascii") finally: forget(modname) expected = badimport_pattern % (modname, expectedinmsg) self.assertEqual(expected, 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') 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, 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) 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)) 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(unittest.TestCase): """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"), ] for url, title in requests: text = pydoc._url_handler(url, "text/html") result = get_html_title(text) self.assertEqual(result, title) 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) def test_main(): test.support.run_unittest(PydocDocTest, TestDescriptions, PydocServerTest, PydocUrlHandlerTest, ) if __name__ == "__main__": test_main()