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"""Tests for distutils.dep_util."""
import unittest
import os
from distutils.dep_util import newer, newer_pairwise, newer_group
from distutils.errors import DistutilsFileError
from distutils.tests import support
from test.support import run_unittest
class DepUtilTestCase(support.TempdirManager, unittest.TestCase):
def test_newer(self):
tmpdir = self.mkdtemp()
new_file = os.path.join(tmpdir, 'new')
old_file = os.path.abspath(__file__)
# Raise DistutilsFileError if 'new_file' does not exist.
self.assertRaises(DistutilsFileError, newer, new_file, old_file)
# Return true if 'new_file' exists and is more recently modified than
# 'old_file', or if 'new_file' exists and 'old_file' doesn't.
self.write_file(new_file)
self.assertTrue(newer(new_file, 'I_dont_exist'))
self.assertTrue(newer(new_file, old_file))
# Return false if both exist and 'old_file' is the same age or younger
# than 'new_file'.
self.assertFalse(newer(old_file, new_file))
def test_newer_pairwise(self):
tmpdir = self.mkdtemp()
sources = os.path.join(tmpdir, 'sources')
targets = os.path.join(tmpdir, 'targets')
os.mkdir(sources)
os.mkdir(targets)
one = os.path.join(sources, 'one')
two = os.path.join(sources, 'two')
three = os.path.abspath(__file__) # I am the old file
four = os.path.join(targets, 'four')
self.write_file(one)
self.write_file(two)
self.write_file(four)
self.assertEqual(newer_pairwise([one, two], [three, four]),
([one],[three]))
def test_newer_group(self):
tmpdir = self.mkdtemp()
sources = os.path.join(tmpdir, 'sources')
os.mkdir(sources)
one = os.path.join(sources, 'one')
two = os.path.join(sources, 'two')
three = os.path.join(sources, 'three')
old_file = os.path.abspath(__file__)
# return true if 'old_file' is out-of-date with respect to any file
# listed in 'sources'.
self.write_file(one)
self.write_file(two)
self.write_file(three)
self.assertTrue(newer_group([one, two, three], old_file))
self.assertFalse(newer_group([one, two, old_file], three))
# missing handling
os.remove(one)
self.assertRaises(OSError, newer_group, [one, two, old_file], three)
self.assertFalse(newer_group([one, two, old_file], three,
missing='ignore'))
self.assertTrue(newer_group([one, two, old_file], three,
missing='newer'))
def test_suite():
return unittest.TestLoader().loadTestsFromTestCase(DepUtilTestCase)
if __name__ == "__main__":
run_unittest(test_suite())
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