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bpo-37689: add Path.is_relative_to() method (GH-14982)

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Hai Shi 2019-08-13 14:54:02 -05:00 • committed by Antoine Pitrou
parent 8a784af750
commit 82642a052d
4 changed files with 111 additions and 1 deletions
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87
Lib/test/test_pathlib.py
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@ -619,6 +619,40 @@ def test_relative_to_common(self):
self.assertRaises(ValueError, p.relative_to, '')
self.assertRaises(ValueError, p.relative_to, P('a'))
def test_is_relative_to_common(self):
P = self.cls
p = P('a/b')
self.assertRaises(TypeError, p.is_relative_to)
self.assertRaises(TypeError, p.is_relative_to, b'a')
self.assertTrue(p.is_relative_to(P()))
self.assertTrue(p.is_relative_to(''))
self.assertTrue(p.is_relative_to(P('a')))
self.assertTrue(p.is_relative_to('a/'))
self.assertTrue(p.is_relative_to(P('a/b')))
self.assertTrue(p.is_relative_to('a/b'))
# With several args.
self.assertTrue(p.is_relative_to('a', 'b'))
# Unrelated paths.
self.assertFalse(p.is_relative_to(P('c')))
self.assertFalse(p.is_relative_to(P('a/b/c')))
self.assertFalse(p.is_relative_to(P('a/c')))
self.assertFalse(p.is_relative_to(P('/a')))
p = P('/a/b')
self.assertTrue(p.is_relative_to(P('/')))
self.assertTrue(p.is_relative_to('/'))
self.assertTrue(p.is_relative_to(P('/a')))
self.assertTrue(p.is_relative_to('/a'))
self.assertTrue(p.is_relative_to('/a/'))
self.assertTrue(p.is_relative_to(P('/a/b')))
self.assertTrue(p.is_relative_to('/a/b'))
# Unrelated paths.
self.assertFalse(p.is_relative_to(P('/c')))
self.assertFalse(p.is_relative_to(P('/a/b/c')))
self.assertFalse(p.is_relative_to(P('/a/c')))
self.assertFalse(p.is_relative_to(P()))
self.assertFalse(p.is_relative_to(''))
self.assertFalse(p.is_relative_to(P('a')))
def test_pickling_common(self):
P = self.cls
p = P('/a/b')
@ -1062,6 +1096,59 @@ def test_relative_to(self):
self.assertRaises(ValueError, p.relative_to, P('//z/Share/Foo'))
self.assertRaises(ValueError, p.relative_to, P('//Server/z/Foo'))
def test_is_relative_to(self):
P = self.cls
p = P('C:Foo/Bar')
self.assertTrue(p.is_relative_to(P('c:')))
self.assertTrue(p.is_relative_to('c:'))
self.assertTrue(p.is_relative_to(P('c:foO')))
self.assertTrue(p.is_relative_to('c:foO'))
self.assertTrue(p.is_relative_to('c:foO/'))
self.assertTrue(p.is_relative_to(P('c:foO/baR')))
self.assertTrue(p.is_relative_to('c:foO/baR'))
# Unrelated paths.
self.assertFalse(p.is_relative_to(P()))
self.assertFalse(p.is_relative_to(''))
self.assertFalse(p.is_relative_to(P('d:')))
self.assertFalse(p.is_relative_to(P('/')))
self.assertFalse(p.is_relative_to(P('Foo')))
self.assertFalse(p.is_relative_to(P('/Foo')))
self.assertFalse(p.is_relative_to(P('C:/Foo')))
self.assertFalse(p.is_relative_to(P('C:Foo/Bar/Baz')))
self.assertFalse(p.is_relative_to(P('C:Foo/Baz')))
p = P('C:/Foo/Bar')
self.assertTrue(p.is_relative_to('c:'))
self.assertTrue(p.is_relative_to(P('c:/')))
self.assertTrue(p.is_relative_to(P('c:/foO')))
self.assertTrue(p.is_relative_to('c:/foO/'))
self.assertTrue(p.is_relative_to(P('c:/foO/baR')))
self.assertTrue(p.is_relative_to('c:/foO/baR'))
# Unrelated paths.
self.assertFalse(p.is_relative_to(P('C:/Baz')))
self.assertFalse(p.is_relative_to(P('C:/Foo/Bar/Baz')))
self.assertFalse(p.is_relative_to(P('C:/Foo/Baz')))
self.assertFalse(p.is_relative_to(P('C:Foo')))
self.assertFalse(p.is_relative_to(P('d:')))
self.assertFalse(p.is_relative_to(P('d:/')))
self.assertFalse(p.is_relative_to(P('/')))
self.assertFalse(p.is_relative_to(P('/Foo')))
self.assertFalse(p.is_relative_to(P('//C/Foo')))
# UNC paths.
p = P('//Server/Share/Foo/Bar')
self.assertTrue(p.is_relative_to(P('//sErver/sHare')))
self.assertTrue(p.is_relative_to('//sErver/sHare'))
self.assertTrue(p.is_relative_to('//sErver/sHare/'))
self.assertTrue(p.is_relative_to(P('//sErver/sHare/Foo')))
self.assertTrue(p.is_relative_to('//sErver/sHare/Foo'))
self.assertTrue(p.is_relative_to('//sErver/sHare/Foo/'))
self.assertTrue(p.is_relative_to(P('//sErver/sHare/Foo/Bar')))
self.assertTrue(p.is_relative_to('//sErver/sHare/Foo/Bar'))
# Unrelated paths.
self.assertFalse(p.is_relative_to(P('/Server/Share/Foo')))
self.assertFalse(p.is_relative_to(P('c:/Server/Share/Foo')))
self.assertFalse(p.is_relative_to(P('//z/Share/Foo')))
self.assertFalse(p.is_relative_to(P('//Server/z/Foo')))
def test_is_absolute(self):
P = self.cls
# Under NT, only paths with both a drive and a root are absolute.