def test_init(self):
r = Range(2, 100, 5)
self.assertTrue(hasattr(r, "start"))
self.assertTrue(hasattr(r, "stop"))
self.assertTrue(hasattr(r, "step"))
exp = range(2, 100, 5)
self.assertEqual(r.start, exp.start)
self.assertEqual(r.stop, exp.stop)
self.assertEqual(r.step, exp.step)
with self.assertRaises(TypeError) as e:
Range(1, 0.0, "a")
with self.assertRaises(TypeError) as exp:
range(1, 0.0, "a")
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(TypeError) as e:
Range("a", 0.0, 0)
with self.assertRaises(TypeError) as exp:
range("a", 0.0, 0)
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(ValueError) as e:
Range(1, 0, 0)
with self.assertRaises(ValueError) as exp:
range(1, 0, 0)
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(TypeError) as e:
Range(1, 0, 0, 0)
with self.assertRaises(TypeError) as exp:
range(1, 0, 0, 0)
self.assertEqual(e.exception.args, exp.exception.args)
def test_count(self):
self.assertEqual(Range(3, 11, 2).count(9), range(3, 11, 2).count(9))
self.assertEqual(Range(100).count(98), range(100).count(98))
self.assertEqual(
Range(5, -1000, -13).count(-216),
range(5, -1000, -13).count(-216))
self.assertEqual(
Range(19, 13333, 3).count(2713),
range(19, 13333, 3).count(2713))
self.assertEqual(
Range(19, 13333000, 3).count(37351.0),
range(19, 13333000, 3).count(37351.0))
self.assertEqual(
Range(101).count(float(100)),
range(101).count(float(100)))
self.assertEqual(Range(101).count("a"), range(101).count("a"))
self.assertEqual(Range(101).count([]), range(101).count([]))
self.assertEqual(Range(101).count(-17), range(101).count(-17))
class AlwaysEqual(object):
def __eq__(self, other):
return True
always_equal = AlwaysEqual()
self.assertEqual(Range(10).count(always_equal), 10)
def test_eq(self):
self.assertEqual(Range(1, 2, 3), Range(1, 2, 3))
self.assertEqual(Range(-100), Range(-100))
self.assertEqual(Range(5, 10), Range(5, 10))
self.assertNotEqual(Range(5, 10), slice(5, 10))
self.assertNotEqual(Range(10), slice(10))
self.assertNotEqual(Range(5, 10), range(5, 10))
self.assertNotEqual(Range(10), range(20))
def test_reverse_iteration(self):
for r in [
Range(10),
Range(0),
Range(1, 9, 3),
Range(8, 0, -3),
Range(sys.maxsize + 1, sys.maxsize + 10)
]:
self.assertEqual(list(reversed(r)), list(r)[::-1])
def test_empty(self):
r = Range(0)
self.assertNotIn(0, r)
self.assertNotIn(1, r)
r = Range(0, -10)
self.assertNotIn(0, r)
self.assertNotIn(-1, r)
self.assertNotIn(1, r)
def test_contains(self):
self.assertEqual(17 in Range(0, 18, 1), 17 in range(0, 18, 1))
self.assertEqual(101 not in Range(101), 101 not in range(101))
self.assertEqual("a" not in Range(101), "a" not in range(101))
self.assertEqual(Int(2) not in Range(101), Int(2) not in range(101))
self.assertEqual(2713 in Range(19, 13333, 3), 2713
in range(19, 13333, 3))
self.assertEqual(2714 not in Range(19, 13333, 3), 2714
not in range(19, 13333, 3))
self.assertEqual(-216 in Range(5, -1000, -13), -216
in range(5, -1000, -13))
r = Range(0, 10, 2)
self.assertIn(0, r)
self.assertNotIn(1, r)
self.assertNotIn(5.0, r)
self.assertNotIn(5.1, r)
self.assertNotIn(-1, r)
self.assertNotIn(10, r)
self.assertNotIn("", r)
r = Range(9, -1, -2)
self.assertNotIn(0, r)
self.assertIn(1, r)
self.assertIn(5.0, r)
self.assertNotIn(5.1, r)
self.assertNotIn(-1, r)
self.assertNotIn(10, r)
self.assertNotIn("", r)
def test_index(self):
self.assertEqual(Range(3, 11, 2).index(9), range(3, 11, 2).index(9))
self.assertEqual(Range(100).index(98), range(100).index(98))
self.assertEqual(
Range(5, -1000, -13).index(-216),
range(5, -1000, -13).index(-216))
self.assertEqual(
Range(19, 13333, 3).index(2713),
range(19, 13333, 3).index(2713))
self.assertEqual(
Range(19, 13333000, 3).index(37351.0),
range(19, 13333000, 3).index(37351.0))
self.assertEqual(
Range(101).index(float(100)),
range(101).index(float(100)))
with self.assertRaises(ValueError) as e:
Range(3, 11, 2).index(11)
with self.assertRaises(ValueError) as exp:
range(3, 11, 2).index(11)
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(ValueError) as e:
Range(3, 11, 2).index("a")
with self.assertRaises(ValueError) as exp:
range(3, 11, 2).index("a")
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(ValueError) as e:
Range(3, 11, 2).index(Int(3))
with self.assertRaises(ValueError) as exp:
range(3, 11, 2).index(Int(3))
self.assertEqual(e.exception.args, exp.exception.args)
def test_iter(self):
self.assertEqual(list(iter(Range(9))), list(iter(range(9))))
self.assertEqual(list(iter(Range(9, 1, 2))), list(iter(range(9, 1,
2))))
self.assertEqual(list(iter(Range(9, 12, 1))),
list(iter(range(9, 12, 1))))
self.assertEqual(list(iter(Range(-9, -100, -5))),
list(iter(range(-9, -100, -5))))
r = Range(-9)
self.assertNotEqual(iter(r), iter(iter(r)))
self.assertEqual(id(iter(r)), id(iter(iter(r))))
self.assertRaises(StopIteration, next, iter(r))
def test_len(self):
self.assertEqual(len(Range(10)), len(range(10)))
self.assertEqual(len(Range(5, 10)), len(range(5, 10)))
self.assertEqual(len(Range(5, 100, 3)), len(range(5, 100, 3)))
self.assertEqual(len(Range(5, 100, 2)), len(range(5, 100, 2)))
self.assertEqual(len(Range(-5, -19, -2)), len(range(-5, -19, -2)))
self.assertEqual(len(Range(100, -100, -10)), len(range(100, -100,
-10)))
self.assertEqual(len(Range(-10)), len(range(-10)))
self.assertEqual(len(Range(100, -100, -11)), len(range(100, -100,
-11)))
self.assertEqual(len(Range(100, -100, -33)), len(range(100, -100,
-33)))
self.assertEqual(len(Range(sys.maxsize, sys.maxsize + 10)), 10)
def test_types(self):
# Non-integer objects *equal* to any of the range's items are supposed
# to be contained in the range.
self.assertIn(1.0, Range(3))
self.assertIn(True, Range(3))
self.assertIn(1 + 0j, Range(3))
class C1:
def __eq__(self, other):
return True
self.assertIn(C1(), Range(3))
# Objects are never coerced into other types for comparison.
class C2:
def __int__(self):
return 1
def __index__(self):
return 1
self.assertNotIn(C2(), Range(3))
# ..except if explicitly told so.
self.assertIn(int(C2()), Range(3))
# Check that the range.__contains__ optimization is only
# used for ints, not for instances of subclasses of int.
class C3(int):
def __eq__(self, other):
return True
self.assertIn(C3(11), Range(10))
self.assertIn(C3(11), list(Range(10)))
def test_getitem(self):
self.assertEqual(Range(10)[0], range(10)[0])
self.assertEqual(Range(10)[4], range(10)[4])
self.assertEqual(Range(19, 13333, 3)[17], range(19, 13333, 3)[17])
self.assertEqual(Range(19, 13333, 3)[0], range(19, 13333, 3)[0])
self.assertEqual(Range(19, 13333, 3)[3], range(19, 13333, 3)[3])
self.assertEqual(Range(19, 13333, 3)[31], range(19, 13333, 3)[31])
self.assertEqual(Range(-10, -100, -1)[15], range(-10, -100, -1)[15])
self.assertEqual(Range(-13, -113, -6)[11], range(-13, -113, -6)[11])
self.assertEqual(Range(-13, -113, -3)[15], range(-13, -113, -3)[15])
with self.assertRaises(IndexError) as e:
Range(-13, -113, -6)[133]
with self.assertRaises(IndexError) as exp:
range(-13, -113, -6)[133]
self.assertEqual(e.exception.args, exp.exception.args)
def test_next(self):
r = Range(3)
it = iter(r)
self.assertEqual(next(it), 0)
self.assertEqual(next(it), 1)
self.assertEqual(next(it), 2)
self.assertRaises(StopIteration, next, it)
def test_iterable(self):
self.assertTrue(issubclass(RangeIterator, Iterator))
self.assertTrue(issubclass(Range, Iterable))
self.assertTrue(issubclass(Range, Sequence))
r = Range(2, 10, 5)
self.assertTrue(isinstance(r, Iterable))
self.assertTrue(isinstance(r, Sequence))
self.assertFalse(isinstance(iter(r), Generator))
self.assertTrue(isinstance(iter(r), Iterator))
self.assertTrue(isinstance(RangeIterator(r), Iterator))
self.assertFalse(isinstance(RangeIterator(r), Generator))
def test_getitem(self):
self.assertEqual(Range(10)[0], range(10)[0])
self.assertEqual(Range(10)[4], range(10)[4])
self.assertEqual(Range(19, 13333, 3)[17], range(19, 13333, 3)[17])
self.assertEqual(Range(19, 13333, 3)[31], range(19, 13333, 3)[31])
self.assertEqual(Range(-10, -100, -1)[15], range(-10, -100, -1)[15])
self.assertEqual(Range(-13, -113, -6)[11], range(-13, -113, -6)[11])
def test_user_index_method(self):
bignum = 2 * sys.maxsize
smallnum = 42
# User-defined class with an __index__ method
class Index:
def __init__(self, n):
self.n = int(n)
def __index__(self):
return self.n
self.assertEqual(list(Range(Index(bignum), Index(bignum + 1))),
[bignum])
self.assertEqual(list(Range(Index(smallnum), Index(smallnum + 1))),
[smallnum])
# User-defined class with a failing __index__ method
class IX:
def __index__(self):
raise RuntimeError
self.assertRaises(RuntimeError, Range, IX())
# User-defined class with an invalid __index__ method
class IN:
def __index__(self):
return "not a number"
self.assertRaises(TypeError, Range, IN())
# Test use of user-defined classes in slice indices.
self.assertEqual(str(Range(10)[:Index(5)]), str(range(5)))
with self.assertRaises(RuntimeError):
Range(0, 10)[:IX()]
with self.assertRaises(TypeError):
Range(0, 10)[:IN()]
def test_contains(self):
self.assertEqual(17 in Range(0, 18, 1), 17 in range(0, 18, 1))
self.assertEqual(101 not in Range(101), 101 not in range(101))
self.assertEqual("a" not in Range(101), "a" not in range(101))
self.assertEqual(Int(2) not in Range(101), Int(2) not in range(101))
self.assertEqual(2713 in Range(19, 13333, 3), 2713
in range(19, 13333, 3))
self.assertEqual(2714 not in Range(19, 13333, 3), 2714
not in range(19, 13333, 3))
self.assertEqual(-216 in Range(5, -1000, -13), -216
in range(5, -1000, -13))
def test_range(self):
self.assertEqual(list(Range(10)), list(range(10)))
self.assertEqual(list(Range(5, 10)), list(range(5, 10)))
self.assertEqual(list(Range(5, 100, 2)), list(range(5, 100, 2)))
self.assertEqual(list(Range(-5, -19, -2)), list(range(-5, -19, -2)))
self.assertEqual(list(Range(100, -100, -11)),
list(range(100, -100, -11)))
self.assertEqual(list(Range(-9)), list(range(-9)))
def test_count(self):
self.assertEqual(Range(3, 11, 2).count(9), range(3, 11, 2).count(9))
self.assertEqual(Range(100).count(98), range(100).count(98))
self.assertEqual(
Range(5, -1000, -13).count(-216),
range(5, -1000, -13).count(-216))
self.assertEqual(
Range(19, 13333, 3).count(2713),
range(19, 13333, 3).count(2713))
self.assertEqual(
Range(19, 13333000, 3).count(37351.0),
range(19, 13333000, 3).count(37351.0))
self.assertEqual(
Range(101).count(float(100)),
range(101).count(float(100)))
self.assertEqual(Range(101).count("a"), range(101).count("a"))
self.assertEqual(Range(101).count([]), range(101).count([]))
self.assertEqual(Range(101).count(-17), range(101).count(-17))
def test_getitem_slice(self):
# self.assertEqual(str(Range(10)[::-1]), str(range(10)[::-1]))
# self.assertEqual(str(Range(10)[1:2:3]), str(range(10)[1:2:3]))
self.assertEqual(str(Range(10)[1:6:3]), str(range(10)[1:6:3]))
self.assertEqual(str(Range(19, 13333, 3)[17:50:3]),
str(range(19, 13333, 3)[17:50:3]))
self.assertEqual(str(Range(19, 13338, 3)[17:10001:3]),
str(range(19, 13338, 3)[17:10001:3]))
self.assertEqual(str(Range(19, 13333, 3)[31]),
str(range(19, 13333, 3)[31]))
# self.assertEqual(
# str(Range(-10, -100, -1)[::-11]), str(range(-10, -100, -1)[::-11])
# )
self.assertEqual(str(Range(-30, -2)[slice(2, 6, 3)]),
str(range(-30, -2)[slice(2, 6, 3)]))
self.assertEqual(str(Range(-13, -113, -6)[slice(2, 11, -3)]),
str(range(-13, -113, -6)[slice(2, 11, -3)]))
self.assertEqual(str(Range(-13, -113, -6)[slice(12, 33, 3)]),
str(range(-13, -113, -6)[slice(12, 33, 3)]))
def test_getitem_slice(self):
self.assertEqual(str(Range(10)[::-1]), str(range(10)[::-1]))
self.assertEqual(str(Range(10)[1:2:3]), str(range(10)[1:2:3]))
self.assertEqual(str(Range(10)[1:6:3]), str(range(10)[1:6:3]))
self.assertEqual(str(Range(19, 13333, 3)[17:50:3]),
str(range(19, 13333, 3)[17:50:3]))
self.assertEqual(str(Range(19, 13338, 3)[17:10001:3]),
str(range(19, 13338, 3)[17:10001:3]))
self.assertEqual(str(Range(19, 13333, 3)[31]),
str(range(19, 13333, 3)[31]))
self.assertEqual(str(Range(-10, -100, -1)[::-11]),
str(range(-10, -100, -1)[::-11]))
self.assertEqual(str(Range(-30, -2)[slice(2, 6, 3)]),
str(range(-30, -2)[slice(2, 6, 3)]))
self.assertEqual(str(Range(-13, -113, -6)[slice(2, 11, -3)]),
str(range(-13, -113, -6)[slice(2, 11, -3)]))
self.assertEqual(str(Range(-13, -113, -6)[slice(12, 33, 3)]),
str(range(-13, -113, -6)[slice(12, 33, 3)]))
self.assertEqual(str(Range(-13, -113, -6)[-3:-10:-2]),
str(range(-13, -113, -6)[-3:-10:-2]))
def check(start, stop, step=None):
i = slice(start, stop, step)
self.assertEqual(list(r[i]), list(r)[i])
self.assertEqual(len(r[i]), len(list(r)[i]))
for r in [
Range(10),
Range(0),
Range(1, 9, 3),
Range(8, 0, -3),
Range(sys.maxsize + 1, sys.maxsize + 10)
]:
check(0, 2)
check(0, 20)
check(1, 2)
check(20, 30)
check(-30, -20)
check(-1, 100, 2)
check(0, -1)
check(-1, -3, -1)
def test_str(self):
self.assertEqual(str(Range(10)), str(range(10)))
self.assertEqual(str(Range(101)), str(range(101)))
self.assertEqual(str(Range(10, 20)), str(range(10, 20)))
self.assertEqual(str(Range(1, 3, 1)), str(range(1, 3, 1)))
self.assertEqual(str(Range(1, 3, 10)), str(range(1, 3, 10)))
self.assertEqual(str(Range(10, -1, -1)), str(range(10, -1, -1)))
self.assertEqual(repr(Range(10, -1, -1)), repr(range(10, -1, -1)))
self.assertEqual(repr(Range(10)), repr(range(10)))
self.assertEqual(repr(Range(101)), str(range(101)))
self.assertEqual(repr(Range(10, 20)), repr(range(10, 20)))
self.assertEqual(repr(Range(1, 3, 1)), repr(range(1, 3, 1)))
self.assertEqual(repr(Range(1, 3, 10)), repr(range(1, 3, 10)))
self.assertEqual(repr(Range(10, -1, -1)), repr(range(10, -1, -1)))
def test_index(self):
self.assertEqual(Range(3, 11, 2).index(9), range(3, 11, 2).index(9))
self.assertEqual(Range(100).index(98), range(100).index(98))
self.assertEqual(
Range(5, -1000, -13).index(-216),
range(5, -1000, -13).index(-216))
self.assertEqual(
Range(19, 13333, 3).index(2713),
range(19, 13333, 3).index(2713))
self.assertEqual(
Range(19, 13333000, 3).index(37351.0),
range(19, 13333000, 3).index(37351.0))
self.assertEqual(
Range(101).index(float(100)),
range(101).index(float(100)))
with self.assertRaises(ValueError) as e:
Range(3, 11, 2).index(11)
with self.assertRaises(ValueError) as exp:
range(3, 11, 2).index(11)
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(ValueError) as e:
Range(3, 11, 2).index("a")
with self.assertRaises(ValueError) as exp:
range(3, 11, 2).index("a")
self.assertEqual(e.exception.args, exp.exception.args)
with self.assertRaises(ValueError) as e:
Range(3, 11, 2).index(Int(3))
with self.assertRaises(ValueError) as exp:
range(3, 11, 2).index(Int(3))
self.assertEqual(e.exception.args, exp.exception.args)
class AlwaysEqual(object):
def __eq__(self, other):
return True
always_equal = AlwaysEqual()
self.assertEqual(Range(10).index(always_equal), 0)
class BadExc(Exception):
pass
class BadCmp:
def __eq__(self, other):
if other == 2:
raise BadExc()
return False
r = Range(4)
self.assertRaises(BadExc, r.index, BadCmp())