import sys
import os
import os.path
import difflib
import subprocess
import re
import pydoc
import inspect
import unittest
import test.test_support
from contextlib import contextmanager
from test.test_support import (
TESTFN, forget, rmtree, EnvironmentVarGuard, reap_children)
from test import pydoc_mod
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__
| 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
| | |
- __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__
- 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 - : 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)
# 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 = run_pydoc(missing_module)
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)
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 = 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")
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_main():
test.test_support.run_unittest(PyDocDocTest,
TestDescriptions)
if __name__ == "__main__":
test_main()