python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/test_unicode_file.py

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+# Test some Unicode file name semantics
+# We dont test many operations on files other than
+# that their names can be used with Unicode characters.
+import os, glob, time, shutil
+import unicodedata
+
+import unittest
+from test.support import (run_unittest, rmtree, change_cwd,
+    TESTFN_ENCODING, TESTFN_UNICODE, TESTFN_UNENCODABLE, create_empty_file)
+
+if not os.path.supports_unicode_filenames:
+    try:
+        TESTFN_UNICODE.encode(TESTFN_ENCODING)
+    except (UnicodeError, TypeError):
+        # Either the file system encoding is None, or the file name
+        # cannot be encoded in the file system encoding.
+        raise unittest.SkipTest("No Unicode filesystem semantics on this platform.")
+
+def remove_if_exists(filename):
+    if os.path.exists(filename):
+        os.unlink(filename)
+
+class TestUnicodeFiles(unittest.TestCase):
+    # The 'do_' functions are the actual tests.  They generally assume the
+    # file already exists etc.
+
+    # Do all the tests we can given only a single filename.  The file should
+    # exist.
+    def _do_single(self, filename):
+        self.assertTrue(os.path.exists(filename))
+        self.assertTrue(os.path.isfile(filename))
+        self.assertTrue(os.access(filename, os.R_OK))
+        self.assertTrue(os.path.exists(os.path.abspath(filename)))
+        self.assertTrue(os.path.isfile(os.path.abspath(filename)))
+        self.assertTrue(os.access(os.path.abspath(filename), os.R_OK))
+        os.chmod(filename, 0o777)
+        os.utime(filename, None)
+        os.utime(filename, (time.time(), time.time()))
+        # Copy/rename etc tests using the same filename
+        self._do_copyish(filename, filename)
+        # Filename should appear in glob output
+        self.assertTrue(
+            os.path.abspath(filename)==os.path.abspath(glob.glob(filename)[0]))
+        # basename should appear in listdir.
+        path, base = os.path.split(os.path.abspath(filename))
+        file_list = os.listdir(path)
+        # Normalize the unicode strings, as round-tripping the name via the OS
+        # may return a different (but equivalent) value.
+        base = unicodedata.normalize("NFD", base)
+        file_list = [unicodedata.normalize("NFD", f) for f in file_list]
+
+        self.assertIn(base, file_list)
+
+    # Tests that copy, move, etc one file to another.
+    def _do_copyish(self, filename1, filename2):
+        # Should be able to rename the file using either name.
+        self.assertTrue(os.path.isfile(filename1)) # must exist.
+        os.rename(filename1, filename2 + ".new")
+        self.assertFalse(os.path.isfile(filename2))
+        self.assertTrue(os.path.isfile(filename1 + '.new'))
+        os.rename(filename1 + ".new", filename2)
+        self.assertFalse(os.path.isfile(filename1 + '.new'))
+        self.assertTrue(os.path.isfile(filename2))
+
+        shutil.copy(filename1, filename2 + ".new")
+        os.unlink(filename1 + ".new") # remove using equiv name.
+        # And a couple of moves, one using each name.
+        shutil.move(filename1, filename2 + ".new")
+        self.assertFalse(os.path.exists(filename2))
+        self.assertTrue(os.path.exists(filename1 + '.new'))
+        shutil.move(filename1 + ".new", filename2)
+        self.assertFalse(os.path.exists(filename2 + '.new'))
+        self.assertTrue(os.path.exists(filename1))
+        # Note - due to the implementation of shutil.move,
+        # it tries a rename first.  This only fails on Windows when on
+        # different file systems - and this test can't ensure that.
+        # So we test the shutil.copy2 function, which is the thing most
+        # likely to fail.
+        shutil.copy2(filename1, filename2 + ".new")
+        self.assertTrue(os.path.isfile(filename1 + '.new'))
+        os.unlink(filename1 + ".new")
+        self.assertFalse(os.path.exists(filename2 + '.new'))
+
+    def _do_directory(self, make_name, chdir_name):
+        if os.path.isdir(make_name):
+            rmtree(make_name)
+        os.mkdir(make_name)
+        try:
+            with change_cwd(chdir_name):
+                cwd_result = os.getcwd()
+                name_result = make_name
+
+                cwd_result = unicodedata.normalize("NFD", cwd_result)
+                name_result = unicodedata.normalize("NFD", name_result)
+
+                self.assertEqual(os.path.basename(cwd_result),name_result)
+        finally:
+            os.rmdir(make_name)
+
+    # The '_test' functions 'entry points with params' - ie, what the
+    # top-level 'test' functions would be if they could take params
+    def _test_single(self, filename):
+        remove_if_exists(filename)
+        create_empty_file(filename)
+        try:
+            self._do_single(filename)
+        finally:
+            os.unlink(filename)
+        self.assertTrue(not os.path.exists(filename))
+        # and again with os.open.
+        f = os.open(filename, os.O_CREAT)
+        os.close(f)
+        try:
+            self._do_single(filename)
+        finally:
+            os.unlink(filename)
+
+    # The 'test' functions are unittest entry points, and simply call our
+    # _test functions with each of the filename combinations we wish to test
+    def test_single_files(self):
+        self._test_single(TESTFN_UNICODE)
+        if TESTFN_UNENCODABLE is not None:
+            self._test_single(TESTFN_UNENCODABLE)
+
+    def test_directories(self):
+        # For all 'equivalent' combinations:
+        #  Make dir with encoded, chdir with unicode, checkdir with encoded
+        #  (or unicode/encoded/unicode, etc
+        ext = ".dir"
+        self._do_directory(TESTFN_UNICODE+ext, TESTFN_UNICODE+ext)
+        # Our directory name that can't use a non-unicode name.
+        if TESTFN_UNENCODABLE is not None:
+            self._do_directory(TESTFN_UNENCODABLE+ext,
+                               TESTFN_UNENCODABLE+ext)
+
+def test_main():
+    run_unittest(__name__)
+
+if __name__ == "__main__":
+    test_main()