1# Copyright (C) 2010 Chris Jerdonek (cjerdonek@webkit.org)
2#
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22
23"""Unit tests for ospath.py."""
24
25import os
26import unittest
27
28from webkitpy.common.system.ospath import relpath
29
30
31# Make sure the tests in this class are platform independent.
32class RelPathTest(unittest.TestCase):
33
34    """Tests relpath()."""
35
36    os_path_abspath = lambda self, path: path
37
38    def _rel_path(self, path, abs_start_path):
39        return relpath(path, abs_start_path, self.os_path_abspath)
40
41    def test_same_path(self):
42        rel_path = self._rel_path("WebKit", "WebKit")
43        self.assertEquals(rel_path, "")
44
45    def test_long_rel_path(self):
46        start_path = "WebKit"
47        expected_rel_path = os.path.join("test", "Foo.txt")
48        path = os.path.join(start_path, expected_rel_path)
49
50        rel_path = self._rel_path(path, start_path)
51        self.assertEquals(expected_rel_path, rel_path)
52
53    def test_none_rel_path(self):
54        """Test _rel_path() with None return value."""
55        start_path = "WebKit"
56        path = os.path.join("other_dir", "foo.txt")
57
58        rel_path = self._rel_path(path, start_path)
59        self.assertTrue(rel_path is None)
60
61        rel_path = self._rel_path("Tools", "WebKit")
62        self.assertTrue(rel_path is None)
63