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# coding: utf-8
"""
Exposes a get_doctests() function for the project's test harness.
"""
import doctest
import os
import pkgutil
import sys
import traceback
if sys.version_info >= (3,):
# Then pull in modules needed for 2to3 conversion. The modules
# below are not necessarily available in older versions of Python.
from lib2to3.main import main as lib2to3main # new in Python 2.6?
from shutil import copyfile
from pystache.tests.common import TEXT_DOCTEST_PATHS
from pystache.tests.common import get_module_names
# This module follows the guidance documented here:
#
# http://docs.python.org/library/doctest.html#unittest-api
#
def get_doctests(text_file_dir):
"""
Return a list of TestSuite instances for all doctests in the project.
Arguments:
text_file_dir: the directory in which to search for all text files
(i.e. non-module files) containing doctests.
"""
# Since module_relative is False in our calls to DocFileSuite below,
# paths should be OS-specific. See the following for more info--
#
# http://docs.python.org/library/doctest.html#doctest.DocFileSuite
#
paths = [os.path.normpath(os.path.join(text_file_dir, path)) for path in TEXT_DOCTEST_PATHS]
if sys.version_info >= (3,):
paths = _convert_paths(paths)
suites = []
for path in paths:
suite = doctest.DocFileSuite(path, module_relative=False)
suites.append(suite)
modules = get_module_names()
for module in modules:
suite = doctest.DocTestSuite(module)
suites.append(suite)
return suites
def _convert_2to3(path):
"""
Convert the given file, and return the path to the converted files.
"""
base, ext = os.path.splitext(path)
# For example, "README.temp2to3.rst".
new_path = "%s.temp2to3%s" % (base, ext)
copyfile(path, new_path)
args = ['--doctests_only', '--no-diffs', '--write', '--nobackups', new_path]
lib2to3main("lib2to3.fixes", args=args)
return new_path
def _convert_paths(paths):
"""
Convert the given files, and return the paths to the converted files.
"""
new_paths = []
for path in paths:
new_path = _convert_2to3(path)
new_paths.append(new_path)
return new_paths
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