def test_string_is_appended(self):
base_dict = {'test': [1, 2, 3]}
util.merge_to_dict(base_dict, 'test', 'four')
assert base_dict['test'] == [1, 2, 3, 'four']
def test_list_value_is_concatenated(self):
base_dict = {'test': [1, 2, 3]}
util.merge_to_dict(base_dict, 'test', [4, 5])
assert base_dict['test'] == [1, 2, 3, 4, 5]
def test_scalar_is_appended(self):
base_dict = {'test': [1, 2, 3]}
util.merge_to_dict(base_dict, 'test', 4)
assert base_dict['test'] == [1, 2, 3, 4]
def test_none_value_sets_default(self):
base_dict = defaultdict(list)
util.merge_to_dict(base_dict, 'test', None)
assert base_dict.get('test') == []