def test_C(self):
l = DLlist()
l.push_back(1)
l.push_back(2)
l.delete(0)
self.assertTrue(len(l) == 1)
def test_F(self):
l = DLlist()
l.push_back(1)
l.push_back(2)
l.push_back(3)
l.delete(1)
self.assertTrue(len(l) == 2)
def test_K(self):
l1 = DLlist()
for i in range(0, 0x100):
l1.push_back(str(i))
assert len(l1) == 0x100
for i in range(0x100-1, -1, -1):
l1.delete(i)
self.assertTrue(len(l1) == 0x0)
def test_S(self):
l = DLlist()
l.push_back(1)
l.delete(0)
l.push_back('A')
l.push_back('B')
l.push_back('C')
l.push_back('D')
self.assertTrue(len(l) == 4 and
l[0] == 'A' and
l[1] == 'B' and
l[2] == 'C' and
l[3] == 'D')