def test_is_subset(self):
elements = ['Y', 'C', 'D']
elements2 = ['C', 'G', 'U', 'D', 'T', 'Y']
elements3 = ['P', 'H', 'Y', 'D', 'E', 'F']
set1 = TreeSet(elements)
set2 = TreeSet(elements2)
set3 = TreeSet(elements3)
assert set1.is_subset(set2) is False
assert set1.is_subset(set3) is False
assert set2.is_subset(set3) is False
def test_is_subset(self):
"""Testing the is_subset method"""
set_one = TreeSet(['C', 'B', 'A', 'E', 'D'])
set_two = TreeSet(['A', 'B', 'C', 'I', 'H'])
set_three = TreeSet(['A', 'B', 'C'])
assert not set_one.is_subset(set_two)
assert not set_two.is_subset(set_one)
assert set_one.is_subset(set_three)
assert set_two.is_subset(set_three)
assert not set_three.is_subset(set_one)
assert not set_three.is_subset(set_two)
def test_subset(self):
s1 = TreeSet([1, 2, 3, 4, 5])
s2 = TreeSet([1, 2, 3, 4, 5, 6])
assert s1.is_subset(s2) is True
assert s2.is_subset(s1) is False