"""Tests for certbot.compat."""
import os
from certbot import compat
import certbot.tests.util as test_util
class OsReplaceTest(test_util.TempDirTestCase):
"""Test to ensure consistent behavior of os_rename method"""
def test_os_rename_to_existing_file(self):
"""Ensure that os_rename will effectively rename src into dst for all platforms."""
src = os.path.join(self.tempdir, 'src')
dst = os.path.join(self.tempdir, 'dst')
open(src, 'w').close()
open(dst, 'w').close()
# On Windows, a direct call to os.rename will fail because dst already exists.
compat.os_rename(src, dst)
self.assertFalse(os.path.exists(src))
self.assertTrue(os.path.exists(dst))
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