def test_empty_iter(self):
seq1 = []
seq2 = RandomAccessIterator(iter(seq1), 7)
assert seq2[0:3] == seq1[0:3]
try:
seq2.next()
self.fail('StopIteration expected')
except StopIteration:
pass
def test_short_iter(self):
seq1 = range(3)
seq2 = RandomAccessIterator(iter(seq1), 7)
assert seq1[0] == seq1[0]
assert seq2[0:3] == seq1[0:3]
assert seq2[:3] == seq1[:3]
assert seq1[0] == seq1[0]
assert seq2[0:3] == seq1[0:3]
assert seq2[:3] == seq1[:3]
first = seq2.next()
assert first == 0
assert seq2[0:4] == seq1[0:4]
item = seq2.next()
assert item == 1
assert seq2[0:4] == seq1[0:4]
item = seq2.next()
assert item == 2
assert seq2[0:4] == seq1[0:4]
try:
item = seq2.next()
self.fail('StopIteration expected')
except StopIteration:
pass
seq1 = range(2)
seq2 = RandomAccessIterator(iter(seq1), 7)
assert seq1[0] == seq1[0]
assert seq2[0:3] == seq1[0:3]
assert seq2[:3] == seq1[:3]
def test_next_items(self):
seq1 = range(10)
seq2 = RandomAccessIterator(iter(seq1), 7)
assert seq1[0] == seq1[0]
assert seq2[0:3] == seq1[0:3]
assert seq2[:3] == seq1[:3]
assert seq2[2] == seq1[2]
first = seq2.next()
assert first == 0
assert seq2[0:4] == seq1[0:4]
item = seq2.next()
assert item == 1
assert seq2[0:5] == seq1[0:5]
item = seq2.next()
assert item == 2
assert seq2[0:6] == seq1[0:6]
item = seq2.next()
assert item == 3
assert seq2[0:7] == seq1[0:7]
try:
seq2[0:8]
self.fail('IndexError expexted')
except IndexError:
pass
item = seq2.next()
assert item == 4
assert seq2[1:8] == seq1[1:8]
assert seq2[1] == seq1[1]
try:
seq2[0]
self.fail('IndexError expexted')
except IndexError:
pass
item = seq2.next()
assert item == 5
assert seq2[2:9] == seq1[2:9]
try:
seq2[1:8]
self.fail('IndexError expexted')
except IndexError:
pass
item = seq2.next()
assert item == 6
assert seq2[3:10] == seq1[3:10]
item = seq2.next()
assert item == 7
assert seq2[3:10] == seq1[3:10]
item = seq2.next()
assert item == 8
item = seq2.next()
assert item == 9
assert seq2[3:10] == seq1[3:10]