codekingpro/portable-devtools

1"""Tests for distutils._modified."""2 3import os4import types5from distutils._modified import newer, newer_group, newer_pairwise, newer_pairwise_group6from distutils.errors import DistutilsFileError7from distutils.tests import support8 9import pytest10 11 12class TestDepUtil(support.TempdirManager):13    def test_newer(self):14        tmpdir = self.mkdtemp()15        new_file = os.path.join(tmpdir, 'new')16        old_file = os.path.abspath(__file__)17 18        # Raise DistutilsFileError if 'new_file' does not exist.19        with pytest.raises(DistutilsFileError):20            newer(new_file, old_file)21 22        # Return true if 'new_file' exists and is more recently modified than23        # 'old_file', or if 'new_file' exists and 'old_file' doesn't.24        self.write_file(new_file)25        assert newer(new_file, 'I_dont_exist')26        assert newer(new_file, old_file)27 28        # Return false if both exist and 'old_file' is the same age or younger29        # than 'new_file'.30        assert not newer(old_file, new_file)31 32    def _setup_1234(self):33        tmpdir = self.mkdtemp()34        sources = os.path.join(tmpdir, 'sources')35        targets = os.path.join(tmpdir, 'targets')36        os.mkdir(sources)37        os.mkdir(targets)38        one = os.path.join(sources, 'one')39        two = os.path.join(sources, 'two')40        three = os.path.abspath(__file__)  # I am the old file41        four = os.path.join(targets, 'four')42        self.write_file(one)43        self.write_file(two)44        self.write_file(four)45        return one, two, three, four46 47    def test_newer_pairwise(self):48        one, two, three, four = self._setup_1234()49 50        assert newer_pairwise([one, two], [three, four]) == ([one], [three])51 52    def test_newer_pairwise_mismatch(self):53        one, two, three, four = self._setup_1234()54 55        with pytest.raises(ValueError):56            newer_pairwise([one], [three, four])57 58        with pytest.raises(ValueError):59            newer_pairwise([one, two], [three])60 61    def test_newer_pairwise_empty(self):62        assert newer_pairwise([], []) == ([], [])63 64    def test_newer_pairwise_fresh(self):65        one, two, three, four = self._setup_1234()66 67        assert newer_pairwise([one, three], [two, four]) == ([], [])68 69    def test_newer_group(self):70        tmpdir = self.mkdtemp()71        sources = os.path.join(tmpdir, 'sources')72        os.mkdir(sources)73        one = os.path.join(sources, 'one')74        two = os.path.join(sources, 'two')75        three = os.path.join(sources, 'three')76        old_file = os.path.abspath(__file__)77 78        # return true if 'old_file' is out-of-date with respect to any file79        # listed in 'sources'.80        self.write_file(one)81        self.write_file(two)82        self.write_file(three)83        assert newer_group([one, two, three], old_file)84        assert not newer_group([one, two, old_file], three)85 86        # missing handling87        os.remove(one)88        with pytest.raises(OSError):89            newer_group([one, two, old_file], three)90 91        assert not newer_group([one, two, old_file], three, missing='ignore')92 93        assert newer_group([one, two, old_file], three, missing='newer')94 95 96@pytest.fixture97def groups_target(tmp_path):98    """99    Set up some older sources, a target, and newer sources.100 101    Returns a simple namespace with these values.102    """103    filenames = ['older.c', 'older.h', 'target.o', 'newer.c', 'newer.h']104    paths = [tmp_path / name for name in filenames]105 106    for mtime, path in enumerate(paths):107        path.write_text('', encoding='utf-8')108 109        # make sure modification times are sequential110        os.utime(path, (mtime, mtime))111 112    return types.SimpleNamespace(older=paths[:2], target=paths[2], newer=paths[3:])113 114 115def test_newer_pairwise_group(groups_target):116    older = newer_pairwise_group([groups_target.older], [groups_target.target])117    newer = newer_pairwise_group([groups_target.newer], [groups_target.target])118    assert older == ([], [])119    assert newer == ([groups_target.newer], [groups_target.target])120 121 122def test_newer_group_no_sources_no_target(tmp_path):123    """124    Consider no sources and no target "newer".125    """126    assert newer_group([], str(tmp_path / 'does-not-exist'))127