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Diffstat (limited to 'FOSS/Python/Dependencies/future-0.18.2/tests/test_future/test_range.py')
| -rw-r--r-- | FOSS/Python/Dependencies/future-0.18.2/tests/test_future/test_range.py | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/FOSS/Python/Dependencies/future-0.18.2/tests/test_future/test_range.py b/FOSS/Python/Dependencies/future-0.18.2/tests/test_future/test_range.py new file mode 100644 index 0000000..dba1522 --- /dev/null +++ b/FOSS/Python/Dependencies/future-0.18.2/tests/test_future/test_range.py @@ -0,0 +1,216 @@ +# -*- coding: utf-8 -*- +""" +Tests for the backported class:`range` class. +""" + +from future.builtins import range +from future.tests.base import unittest + +from operator import attrgetter + +from future.utils import PY2 + +if PY2: + from collections import Iterator, Sequence +else: + from collections.abc import Iterator, Sequence + + +class RangeTests(unittest.TestCase): + def test_range(self): + self.assertTrue(isinstance(range(0), Sequence)) + self.assertTrue(isinstance(reversed(range(0)), Iterator)) + + def test_bool_range(self): + self.assertFalse(range(0)) + self.assertTrue(range(1)) + self.assertFalse(range(1, 1)) + self.assertFalse(range(5, 2)) + + def test_equality_range(self): + self.assertEqual(range(7), range(7)) + self.assertEqual(range(0), range(1, 1)) + self.assertEqual(range(0, 10, 3), range(0, 11, 3)) + + def test_contains(self): + self.assertIn(1, range(2)) + self.assertNotIn(10, range(2)) + self.assertNotIn(None, range(2)) + self.assertNotIn("", range(2)) + + # Use strict equality of attributes when slicing to catch subtle differences + def assertRangesEqual(self, r1, r2): + by_attrs = attrgetter('start', 'stop', 'step') + self.assertEqual(by_attrs(r1), by_attrs(r2)) + + def test_slice_empty_range(self): + self.assertRangesEqual(range(0)[:], range(0)) + self.assertRangesEqual(range(0)[::-1], range(-1, -1, -1)) + + def test_slice_overflow_range(self): + r = range(8) + self.assertRangesEqual(r[2:200], range(2, 8)) + self.assertRangesEqual(r[-200:-2], range(0, 6)) + + def test_slice_range(self): + r = range(-8, 8) + self.assertRangesEqual(r[:], range(-8, 8)) + self.assertRangesEqual(r[:2], range(-8, -6)) + self.assertRangesEqual(r[:-2], range(-8, 6)) + self.assertRangesEqual(r[2:], range(-6, 8)) + self.assertRangesEqual(r[-2:], range(6, 8)) + self.assertRangesEqual(r[2:-2], range(-6, 6)) + + def test_rev_slice_range(self): + r = range(-8, 8) + self.assertRangesEqual(r[::-1], range(7, -9, -1)) + self.assertRangesEqual(r[:2:-1], range(7, -6, -1)) + self.assertRangesEqual(r[:-2:-1], range(7, 6, -1)) + self.assertRangesEqual(r[2::-1], range(-6, -9, -1)) + self.assertRangesEqual(r[-2::-1], range(6, -9, -1)) + self.assertRangesEqual(r[-2:2:-1], range(6, -6, -1)) + + def test_slice_rev_range(self): + r = range(8, -8, -1) + self.assertRangesEqual(r[:], range(8, -8, -1)) + self.assertRangesEqual(r[:2], range(8, 6, -1)) + self.assertRangesEqual(r[:-2], range(8, -6, -1)) + self.assertRangesEqual(r[2:], range(6, -8, -1)) + self.assertRangesEqual(r[-2:], range(-6, -8, -1)) + self.assertRangesEqual(r[2:-2], range(6, -6, -1)) + + def test_rev_slice_rev_range(self): + r = range(8, -8, -1) + self.assertRangesEqual(r[::-1], range(-7, 9)) + self.assertRangesEqual(r[:2:-1], range(-7, 6)) + self.assertRangesEqual(r[:-2:-1], range(-7, -6)) + self.assertRangesEqual(r[2::-1], range(6, 9)) + self.assertRangesEqual(r[-2::-1], range(-6, 9)) + self.assertRangesEqual(r[-2:2:-1], range(-6, 6)) + + def test_stepped_slice_range(self): + r = range(-8, 8) + self.assertRangesEqual(r[::2], range(-8, 8, 2)) + self.assertRangesEqual(r[:2:2], range(-8, -6, 2)) + self.assertRangesEqual(r[:-2:2], range(-8, 6, 2)) + self.assertRangesEqual(r[2::2], range(-6, 8, 2)) + self.assertRangesEqual(r[-2::2], range(6, 8, 2)) + self.assertRangesEqual(r[2:-2:2], range(-6, 6, 2)) + + def test_rev_stepped_slice_range(self): + r = range(-8, 8) + self.assertRangesEqual(r[::-2], range(7, -9, -2)) + self.assertRangesEqual(r[:2:-2], range(7, -6, -2)) + self.assertRangesEqual(r[:-2:-2], range(7, 6, -2)) + self.assertRangesEqual(r[2::-2], range(-6, -9, -2)) + self.assertRangesEqual(r[-2::-2], range(6, -9, -2)) + self.assertRangesEqual(r[-2:2:-2], range(6, -6, -2)) + + def test_stepped_slice_rev_range(self): + r = range(8, -8, -1) + self.assertRangesEqual(r[::2], range(8, -8, -2)) + self.assertRangesEqual(r[:2:2], range(8, 6, -2)) + self.assertRangesEqual(r[:-2:2], range(8, -6, -2)) + self.assertRangesEqual(r[2::2], range(6, -8, -2)) + self.assertRangesEqual(r[-2::2], range(-6, -8, -2)) + self.assertRangesEqual(r[2:-2:2], range(6, -6, -2)) + + def test_rev_stepped_slice_rev_range(self): + r = range(8, -8, -1) + self.assertRangesEqual(r[::-2], range(-7, 9, 2)) + self.assertRangesEqual(r[:2:-2], range(-7, 6, 2)) + self.assertRangesEqual(r[:-2:-2], range(-7, -6, 2)) + self.assertRangesEqual(r[2::-2], range(6, 9, 2)) + self.assertRangesEqual(r[-2::-2], range(-6, 9, 2)) + self.assertRangesEqual(r[-2:2:-2], range(-6, 6, 2)) + + def test_slice_stepped_range(self): + r = range(-8, 8, 2) + self.assertRangesEqual(r[:], range(-8, 8, 2)) + self.assertRangesEqual(r[:2], range(-8, -4, 2)) + self.assertRangesEqual(r[:-2], range(-8, 4, 2)) + self.assertRangesEqual(r[2:], range(-4, 8, 2)) + self.assertRangesEqual(r[-2:], range(4, 8, 2)) + self.assertRangesEqual(r[2:-2], range(-4, 4, 2)) + + def test_rev_slice_stepped_range(self): + r = range(-8, 8, 2) + self.assertRangesEqual(r[::-1], range(6, -10, -2)) + self.assertRangesEqual(r[:2:-1], range(6, -4, -2)) + self.assertRangesEqual(r[:-2:-1], range(6, 4, -2)) + self.assertRangesEqual(r[2::-1], range(-4, -10, -2)) + self.assertRangesEqual(r[-2::-1], range(4, -10, -2)) + self.assertRangesEqual(r[-2:2:-1], range(4, -4, -2)) + + def test_slice_rev_stepped_range(self): + r = range(8, -8, -2) + self.assertRangesEqual(r[:], range(8, -8, -2)) + self.assertRangesEqual(r[:2], range(8, 4, -2)) + self.assertRangesEqual(r[:-2], range(8, -4, -2)) + self.assertRangesEqual(r[2:], range(4, -8, -2)) + self.assertRangesEqual(r[-2:], range(-4, -8, -2)) + self.assertRangesEqual(r[2:-2], range(4, -4, -2)) + + def test_rev_slice_rev_stepped_range(self): + r = range(8, -8, -2) + self.assertRangesEqual(r[::-1], range(-6, 10, 2)) + self.assertRangesEqual(r[:2:-1], range(-6, 4, 2)) + self.assertRangesEqual(r[:-2:-1], range(-6, -4, 2)) + self.assertRangesEqual(r[2::-1], range(4, 10, 2)) + self.assertRangesEqual(r[-2::-1], range(-4, 10, 2)) + self.assertRangesEqual(r[-2:2:-1], range(-4, 4, 2)) + + def test_stepped_slice_stepped_range(self): + r = range(-8, 8, 2) + self.assertRangesEqual(r[::2], range(-8, 8, 4)) + self.assertRangesEqual(r[:2:2], range(-8, -4, 4)) + self.assertRangesEqual(r[:-2:2], range(-8, 4, 4)) + self.assertRangesEqual(r[2::2], range(-4, 8, 4)) + self.assertRangesEqual(r[-2::2], range(4, 8, 4)) + self.assertRangesEqual(r[2:-2:2], range(-4, 4, 4)) + + def test_rev_stepped_slice_stepped_range(self): + r = range(-8, 8, 2) + self.assertRangesEqual(r[::-2], range(6, -10, -4)) + self.assertRangesEqual(r[:2:-2], range(6, -4, -4)) + self.assertRangesEqual(r[:-2:-2], range(6, 4, -4)) + self.assertRangesEqual(r[2::-2], range(-4, -10, -4)) + self.assertRangesEqual(r[-2::-2], range(4, -10, -4)) + self.assertRangesEqual(r[-2:2:-2], range(4, -4, -4)) + + def test_stepped_slice_rev_stepped_range(self): + r = range(8, -8, -2) + self.assertRangesEqual(r[::2], range(8, -8, -4)) + self.assertRangesEqual(r[:2:2], range(8, 4, -4)) + self.assertRangesEqual(r[:-2:2], range(8, -4, -4)) + self.assertRangesEqual(r[2::2], range(4, -8, -4)) + self.assertRangesEqual(r[-2::2], range(-4, -8, -4)) + self.assertRangesEqual(r[2:-2:2], range(4, -4, -4)) + + def test_rev_stepped_slice_rev_stepped_range(self): + r = range(8, -8, -2) + self.assertRangesEqual(r[::-2], range(-6, 10, 4)) + self.assertRangesEqual(r[:2:-2], range(-6, 4, 4)) + self.assertRangesEqual(r[:-2:-2], range(-6, -4, 4)) + self.assertRangesEqual(r[2::-2], range(4, 10, 4)) + self.assertRangesEqual(r[-2::-2], range(-4, 10, 4)) + self.assertRangesEqual(r[-2:2:-2], range(-4, 4, 4)) + + def test_slice_zero_step(self): + msg = '^slice step cannot be zero$' + with self.assertRaisesRegex(ValueError, msg): + range(8)[::0] + + def test_properties(self): + # Exception string differs between PY2/3 + r = range(0) + with self.assertRaises(AttributeError): + r.start = 0 + with self.assertRaises(AttributeError): + r.stop = 0 + with self.assertRaises(AttributeError): + r.step = 0 + + +if __name__ == '__main__': + unittest.main() |