def test_element_exists():
lww_element_set = LWWElementSet()
lww_element_set.add('value1', 1)
assert lww_element_set.contains('value1')
def test_remove_bias():
lww_element_set = LWWElementSet(bias='remove')
lww_element_set.add('value1', 1)
lww_element_set.remove('value1', 1)
assert not lww_element_set.contains('value1')
def test_element_added_after_removal():
lww_element_set = LWWElementSet()
lww_element_set.remove('value1', 1)
lww_element_set.add('value1', 2)
assert lww_element_set.contains('value1')
def test_add_bias():
lww_element_set = LWWElementSet()
lww_element_set.add('value1', 1)
lww_element_set.remove('value1', 1)
assert lww_element_set.contains('value1')
def test_element_removed_after_insertion():
lww_element_set = LWWElementSet()
lww_element_set.add('value1', 1)
lww_element_set.remove('value1', 2)
assert not lww_element_set.contains('value1')