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"""Tests for distutils.dep_util."""
import unittest
import os
import time
from distutils.dep_util import newer, newer_pairwise, newer_group
from distutils.errors import DistutilsFileError
from distutils.tests import support
# XXX needs to be tuned for the various platforms
_ST_MIME_TIMER = 1
class DepUtilTestCase(support.TempdirManager, unittest.TestCase):
def test_newer(self):
tmpdir = self.mkdtemp()
target = os.path.join(tmpdir, 'target')
source = os.path.join(tmpdir, 'source')
# Raise DistutilsFileError if 'source' does not exist.
self.assertRaises(DistutilsFileError, newer, target, source)
# Return true if 'source' exists and is more recently modified than
# 'target', or if 'source' exists and 'target' doesn't.
self.write_file(target)
self.assertTrue(newer(target, source))
self.write_file(source, 'xox')
time.sleep(_ST_MIME_TIMER) # ensures ST_MTIME differs
self.write_file(target, 'xhx')
self.assertTrue(newer(target, source))
# Return false if both exist and 'target' is the same age or younger
# than 'source'.
self.write_file(source, 'xox'); self.write_file(target, 'xhx')
self.assertFalse(newer(target, source))
self.write_file(target, 'xox')
time.sleep(_ST_MIME_TIMER)
self.write_file(source, 'xhx')
self.assertFalse(newer(target, source))
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.join(targets, 'three')
four = os.path.join(targets, 'four')
self.write_file(one)
self.write_file(three)
self.write_file(four)
time.sleep(_ST_MIME_TIMER)
self.write_file(two)
self.assertEquals(newer_pairwise([one, two], [three, four]),
([two],[four]))
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')
target = os.path.join(tmpdir, 'target')
# return true if 'target' is out-of-date with respect to any file
# listed in 'sources'.
self.write_file(target)
time.sleep(_ST_MIME_TIMER)
self.write_file(one)
self.write_file(two)
self.write_file(three)
self.assertTrue(newer_group([one, two, three], target))
self.write_file(one)
self.write_file(three)
self.write_file(two)
time.sleep(0.1)
self.write_file(target)
self.assertFalse(newer_group([one, two, three], target))
# missing handling
os.remove(one)
self.assertRaises(OSError, newer_group, [one, two, three], target)
self.assertFalse(newer_group([one, two, three], target,
missing='ignore'))
self.assertTrue(newer_group([one, two, three], target,
missing='newer'))
def test_suite():
return unittest.makeSuite(DepUtilTestCase)
if __name__ == "__main__":
unittest.main(defaultTest="test_suite")
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