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"""Tests for distutils.dep_util."""
import os
from distutils.dep_util import newer, newer_pairwise, newer_group
from distutils.errors import DistutilsFileError
from distutils.tests import support
import pytest
class TestDepUtil(support.TempdirManager):
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.
with pytest.raises(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)
assert newer(new_file, 'I_dont_exist')
assert newer(new_file, old_file)
# Return false if both exist and 'old_file' is the same age or younger
# than 'new_file'.
assert not 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)
assert 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# return true if 'old_file' is out-of-date with respect to any file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)
assert newer_group([one, two, three], old_file)
assert not newer_group([one, two, old_file], three)
# missing handling
os.remove(one)
with pytest.raises(OSError):
newer_group([one, two, old_file], three)
assert not newer_group([one, two, old_file], three, missing='ignore')
assert newer_group([one, two, old_file], three, missing='newer')
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