import sys
import os
import os.path
import difflib
import subprocess
import re
import pydoc
import inspect
import unittest
import test.support
from contextlib import contextmanager
from test.support import TESTFN, forget, rmtree, EnvironmentVarGuard
from test import pydoc_mod
expected_text_pattern = \
"""
NAME
test.pydoc_mod - This is a test module for test_pydoc
FILE
%s
%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
__author__ = 'Benjamin Peterson'
__credits__ = 'Nobody'
__version__ = '1.2.3.4'
VERSION
1.2.3.4
AUTHOR
Benjamin Peterson
CREDITS
Nobody
""".strip()
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__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
|
class B(builtins.object) |
\x20\x20\x20\x20
| | |
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'
| |
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()
# 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]
output = subprocess.Popen(cmd, stdout=subprocess.PIPE).stdout.read()
return output.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 PyDocDocTest(unittest.TestCase):
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")
def test_text_doc(self):
result, doc_loc = get_pydoc_text(pydoc_mod)
expected_text = expected_text_pattern % \
(inspect.getabsfile(pydoc_mod), doc_loc)
if result != expected_text:
print_diffs(expected_text, result)
self.fail("outputs are not equal, see diff above")
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:
f = open(sourcefn, 'w')
f.write("import {}\n".format(importstring))
f.close()
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)
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.assertTrue("pydocfodder" in doc)
def test_classic_class(self):
class C: "Classic class"
c = C()
self.assertEqual(pydoc.describe(C), 'class C')
self.assertEqual(pydoc.describe(c), 'C')
expected = 'C in module %s' % __name__
self.assertTrue(expected in 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.assertTrue(expected in pydoc.render_doc(c))
def test_main():
test.support.run_unittest(PyDocDocTest, TestDescriptions)
if __name__ == "__main__":
test_main()