+++ /dev/null
-# tests for slice objects; in particular the indices method.\r
-\r
-import unittest\r
-from test import test_support\r
-from cPickle import loads, dumps\r
-\r
-import sys\r
-\r
-class SliceTest(unittest.TestCase):\r
-\r
- def test_constructor(self):\r
- self.assertRaises(TypeError, slice)\r
- self.assertRaises(TypeError, slice, 1, 2, 3, 4)\r
-\r
- def test_repr(self):\r
- self.assertEqual(repr(slice(1, 2, 3)), "slice(1, 2, 3)")\r
-\r
- def test_hash(self):\r
- # Verify clearing of SF bug #800796\r
- self.assertRaises(TypeError, hash, slice(5))\r
- self.assertRaises(TypeError, slice(5).__hash__)\r
-\r
- def test_cmp(self):\r
- s1 = slice(1, 2, 3)\r
- s2 = slice(1, 2, 3)\r
- s3 = slice(1, 2, 4)\r
- self.assertEqual(s1, s2)\r
- self.assertNotEqual(s1, s3)\r
-\r
- class Exc(Exception):\r
- pass\r
-\r
- class BadCmp(object):\r
- def __eq__(self, other):\r
- raise Exc\r
- __hash__ = None # Silence Py3k warning\r
-\r
- s1 = slice(BadCmp())\r
- s2 = slice(BadCmp())\r
- self.assertRaises(Exc, cmp, s1, s2)\r
- self.assertEqual(s1, s1)\r
-\r
- s1 = slice(1, BadCmp())\r
- s2 = slice(1, BadCmp())\r
- self.assertEqual(s1, s1)\r
- self.assertRaises(Exc, cmp, s1, s2)\r
-\r
- s1 = slice(1, 2, BadCmp())\r
- s2 = slice(1, 2, BadCmp())\r
- self.assertEqual(s1, s1)\r
- self.assertRaises(Exc, cmp, s1, s2)\r
-\r
- def test_members(self):\r
- s = slice(1)\r
- self.assertEqual(s.start, None)\r
- self.assertEqual(s.stop, 1)\r
- self.assertEqual(s.step, None)\r
-\r
- s = slice(1, 2)\r
- self.assertEqual(s.start, 1)\r
- self.assertEqual(s.stop, 2)\r
- self.assertEqual(s.step, None)\r
-\r
- s = slice(1, 2, 3)\r
- self.assertEqual(s.start, 1)\r
- self.assertEqual(s.stop, 2)\r
- self.assertEqual(s.step, 3)\r
-\r
- class AnyClass:\r
- pass\r
-\r
- obj = AnyClass()\r
- s = slice(obj)\r
- self.assertTrue(s.stop is obj)\r
-\r
- def test_indices(self):\r
- self.assertEqual(slice(None ).indices(10), (0, 10, 1))\r
- self.assertEqual(slice(None, None, 2).indices(10), (0, 10, 2))\r
- self.assertEqual(slice(1, None, 2).indices(10), (1, 10, 2))\r
- self.assertEqual(slice(None, None, -1).indices(10), (9, -1, -1))\r
- self.assertEqual(slice(None, None, -2).indices(10), (9, -1, -2))\r
- self.assertEqual(slice(3, None, -2).indices(10), (3, -1, -2))\r
- # issue 3004 tests\r
- self.assertEqual(slice(None, -9).indices(10), (0, 1, 1))\r
- self.assertEqual(slice(None, -10).indices(10), (0, 0, 1))\r
- self.assertEqual(slice(None, -11).indices(10), (0, 0, 1))\r
- self.assertEqual(slice(None, -10, -1).indices(10), (9, 0, -1))\r
- self.assertEqual(slice(None, -11, -1).indices(10), (9, -1, -1))\r
- self.assertEqual(slice(None, -12, -1).indices(10), (9, -1, -1))\r
- self.assertEqual(slice(None, 9).indices(10), (0, 9, 1))\r
- self.assertEqual(slice(None, 10).indices(10), (0, 10, 1))\r
- self.assertEqual(slice(None, 11).indices(10), (0, 10, 1))\r
- self.assertEqual(slice(None, 8, -1).indices(10), (9, 8, -1))\r
- self.assertEqual(slice(None, 9, -1).indices(10), (9, 9, -1))\r
- self.assertEqual(slice(None, 10, -1).indices(10), (9, 9, -1))\r
-\r
- self.assertEqual(\r
- slice(-100, 100 ).indices(10),\r
- slice(None).indices(10)\r
- )\r
- self.assertEqual(\r
- slice(100, -100, -1).indices(10),\r
- slice(None, None, -1).indices(10)\r
- )\r
- self.assertEqual(slice(-100L, 100L, 2L).indices(10), (0, 10, 2))\r
-\r
- self.assertEqual(range(10)[::sys.maxint - 1], [0])\r
-\r
- self.assertRaises(OverflowError, slice(None).indices, 1L<<100)\r
-\r
- def test_setslice_without_getslice(self):\r
- tmp = []\r
- class X(object):\r
- def __setslice__(self, i, j, k):\r
- tmp.append((i, j, k))\r
-\r
- x = X()\r
- with test_support.check_py3k_warnings():\r
- x[1:2] = 42\r
- self.assertEqual(tmp, [(1, 2, 42)])\r
-\r
- def test_pickle(self):\r
- s = slice(10, 20, 3)\r
- for protocol in (0,1,2):\r
- t = loads(dumps(s, protocol))\r
- self.assertEqual(s, t)\r
- self.assertEqual(s.indices(15), t.indices(15))\r
- self.assertNotEqual(id(s), id(t))\r
-\r
-def test_main():\r
- test_support.run_unittest(SliceTest)\r
-\r
-if __name__ == "__main__":\r
- test_main()\r