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"""Tests for distutils._modified."""
import os
import types
from distutils._modified import newer, newer_group, newer_pairwise, newer_pairwise_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 _setup_1234(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)
return one, two, three, four
def test_newer_pairwise(self):
one, two, three, four = self._setup_1234()
assert newer_pairwise([one, two], [three, four]) == ([one], [three])
def test_newer_pairwise_mismatch(self):
one, two, three, four = self._setup_1234()
with pytest.raises(ValueError):
newer_pairwise([one], [three, four])
with pytest.raises(ValueError):
newer_pairwise([one, two], [three])
def test_newer_pairwise_empty(self):
assert newer_pairwise([], []) == ([], [])
def test_newer_pairwise_fresh(self):
one, two, three, four = self._setup_1234()
assert newer_pairwise([one, three], [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')
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# return true if 'old_file' is out-of-date with respect to any file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')
@pytest.fixture
def groups_target(tmp_path):
"""
Set up some older sources, a target, and newer sources.
Returns a simple namespace with these values.
"""
filenames = ['older.c', 'older.h', 'target.o', 'newer.c', 'newer.h']
paths = [tmp_path / name for name in filenames]
for mtime, path in enumerate(paths):
path.write_text('', encoding='utf-8')
# make sure modification times are sequential
os.utime(path, (mtime, mtime))
return types.SimpleNamespace(older=paths[:2], target=paths[2], newer=paths[3:])
def test_newer_pairwise_group(groups_target):
older = newer_pairwise_group([groups_target.older], [groups_target.target])
newer = newer_pairwise_group([groups_target.newer], [groups_target.target])
assert older == ([], [])
assert newer == ([groups_target.newer], [groups_target.target])
def test_newer_group_no_sources_no_target(tmp_path):
"""
Consider no sources and no target "newer".
"""
assert newer_group([], str(tmp_path / 'does-not-exist'))
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