name : test_modified.py """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'two') three = os.path.join(sources, 'three') old_file = os.path.abspath(__file__) # return true if 'old_file' is out-of-date with respect to any file # listed in 'sources'.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'))