def test_not_equal(self):
pl1 = PositionalList.from_iterable('cba')
pl2 = PositionalList()
a = pl2.add_first('a')
b = pl2.add_after(a, 'b')
c = pl2.add_last('c')
self.assertNotEqual(pl1, pl2)
def test_delete_first(self):
expected = PositionalList.from_iterable('bc')
pl = PositionalList()
a = pl.add_first('a')
b = pl.add_after(a, 'b')
c = pl.add_last('c')
db = pl.delete(a)
self.assertEqual(pl, expected)
self.assertEqual(db, 'a')
def test_replace_first(self):
expected = PositionalList.from_iterable('Abcd')
pl = PositionalList()
a = pl.add_first('a')
b = pl.add_after(a, 'b')
c = pl.add_last('c')
d = pl.add_after(c, 'd')
ret = pl.replace(a, 'A')
self.assertEqual(ret, 'a')
self.assertEqual(pl, expected)
def test_sort_scrambled_non_uniques_3(self):
expected = PositionalList.from_iterable(
[-1, -1, -1, -1, -1, 0, 0, 0, 0, 0])
pl = PositionalList.from_iterable([0, 0, 0, 0, 0, -1, -1, -1, -1, -1])
pl.sort()
self.assertEqual(pl, expected)
def test_sort_scrambled_non_uniques_1(self):
expected = PositionalList.from_iterable([0, 0, 1, 1, 2, 2, 3, 3, 4, 4])
pl = PositionalList.from_iterable([2, 0, 3, 4, 1, 3, 0, 1, 4, 2])
pl.sort()
self.assertEqual(pl, expected)
def test_sort_scrambled_uniques(self):
expected = PositionalList.from_iterable(list(range(10)))
pl = PositionalList.from_iterable([4, 3, 8, 0, 1, 9, 7, 2, 6, 5])
pl.sort()
self.assertEqual(pl, expected)
def test_sort_reversed(self):
expected = PositionalList.from_iterable(list(range(11)))
pl = PositionalList.from_iterable(list(range(10, -1, -1)))
pl.sort()
self.assertEqual(pl, expected)
def test_sort_all_same_neg(self):
expected = PositionalList.from_iterable([-42] * 10)
pl = PositionalList.from_iterable([-42] * 10)
pl.sort()
self.assertEqual(pl, expected)
def test_from_iterable_first_last_list(self):
it = list(range(10))
pl = PositionalList.from_iterable(it)
self.assertEqual(pl.first().payload(), it[0])
self.assertEqual(pl.last().payload(), it[-1])
def test_sort_sorted_neg(self):
expected = PositionalList.from_iterable([-3, -2, -1, 0, 1, 2, 3])
pl = PositionalList.from_iterable([0, -3, 1, 2, -2, -1, 3])
pl.sort()
self.assertEqual(pl, expected)
def test_from_iterable_len_1(self):
it = 'abc'
pl = PositionalList.from_iterable(it)
self.assertEqual(len(pl), len(it))
def test_from_iterable_instance(self):
it = 'abc'
pl = PositionalList.from_iterable(it)
self.assertIsInstance(pl, PositionalList)