1 files changed, 124 insertions, 0 deletions
diff --git a/setuptools/_distutils/tests/test_file_util.py b/setuptools/_distutils/tests/test_file_util.py
new file mode 100644
index 0000000..81b90d6
--- /dev/null
+++ b/setuptools/_distutils/tests/test_file_util.py
@@ -0,0 +1,124 @@
+"""Tests for distutils.file_util."""
+import unittest
+import os
+import errno
+from unittest.mock import patch
+
+from distutils.file_util import move_file, copy_file
+from distutils import log
+from distutils.tests import support
+from distutils.errors import DistutilsFileError
+from test.support import run_unittest
+from .py38compat import unlink
+
+
+class FileUtilTestCase(support.TempdirManager, unittest.TestCase):
+
+    def _log(self, msg, *args):
+        if len(args) > 0:
+            self._logs.append(msg % args)
+        else:
+            self._logs.append(msg)
+
+    def setUp(self):
+        super(FileUtilTestCase, self).setUp()
+        self._logs = []
+        self.old_log = log.info
+        log.info = self._log
+        tmp_dir = self.mkdtemp()
+        self.source = os.path.join(tmp_dir, 'f1')
+        self.target = os.path.join(tmp_dir, 'f2')
+        self.target_dir = os.path.join(tmp_dir, 'd1')
+
+    def tearDown(self):
+        log.info = self.old_log
+        super(FileUtilTestCase, self).tearDown()
+
+    def test_move_file_verbosity(self):
+        f = open(self.source, 'w')
+        try:
+            f.write('some content')
+        finally:
+            f.close()
+
+        move_file(self.source, self.target, verbose=0)
+        wanted = []
+        self.assertEqual(self._logs, wanted)
+
+        # back to original state
+        move_file(self.target, self.source, verbose=0)
+
+        move_file(self.source, self.target, verbose=1)
+        wanted = ['moving %s -> %s' % (self.source, self.target)]
+        self.assertEqual(self._logs, wanted)
+
+        # back to original state
+        move_file(self.target, self.source, verbose=0)
+
+        self._logs = []
+        # now the target is a dir
+        os.mkdir(self.target_dir)
+        move_file(self.source, self.target_dir, verbose=1)
+        wanted = ['moving %s -> %s' % (self.source, self.target_dir)]
+        self.assertEqual(self._logs, wanted)
+
+    def test_move_file_exception_unpacking_rename(self):
+        # see issue 22182
+        with patch("os.rename", side_effect=OSError("wrong", 1)), \
+             self.assertRaises(DistutilsFileError):
+            with open(self.source, 'w') as fobj:
+                fobj.write('spam eggs')
+            move_file(self.source, self.target, verbose=0)
+
+    def test_move_file_exception_unpacking_unlink(self):
+        # see issue 22182
+        with patch("os.rename", side_effect=OSError(errno.EXDEV, "wrong")), \
+             patch("os.unlink", side_effect=OSError("wrong", 1)), \
+             self.assertRaises(DistutilsFileError):
+            with open(self.source, 'w') as fobj:
+                fobj.write('spam eggs')
+            move_file(self.source, self.target, verbose=0)
+
+    def test_copy_file_hard_link(self):
+        with open(self.source, 'w') as f:
+            f.write('some content')
+        # Check first that copy_file() will not fall back on copying the file
+        # instead of creating the hard link.
+        try:
+            os.link(self.source, self.target)
+        except OSError as e:
+            self.skipTest('os.link: %s' % e)
+        else:
+            unlink(self.target)
+        st = os.stat(self.source)
+        copy_file(self.source, self.target, link='hard')
+        st2 = os.stat(self.source)
+        st3 = os.stat(self.target)
+        self.assertTrue(os.path.samestat(st, st2), (st, st2))
+        self.assertTrue(os.path.samestat(st2, st3), (st2, st3))
+        with open(self.source, 'r') as f:
+            self.assertEqual(f.read(), 'some content')
+
+    def test_copy_file_hard_link_failure(self):
+        # If hard linking fails, copy_file() falls back on copying file
+        # (some special filesystems don't support hard linking even under
+        #  Unix, see issue #8876).
+        with open(self.source, 'w') as f:
+            f.write('some content')
+        st = os.stat(self.source)
+        with patch("os.link", side_effect=OSError(0, "linking unsupported")):
+            copy_file(self.source, self.target, link='hard')
+        st2 = os.stat(self.source)
+        st3 = os.stat(self.target)
+        self.assertTrue(os.path.samestat(st, st2), (st, st2))
+        self.assertFalse(os.path.samestat(st2, st3), (st2, st3))
+        for fn in (self.source, self.target):
+            with open(fn, 'r') as f:
+                self.assertEqual(f.read(), 'some content')
+
+
+def test_suite():
+    return unittest.TestLoader().loadTestsFromTestCase(FileUtilTestCase)
+
+if __name__ == "__main__":
+    run_unittest(test_suite())