def METHOD_NAME(self, mock_set_options, mock_get_option, mock_template):
    results = self.merge_vars_lookup.run(['__merge_dict'], {
        'testdict1__merge_dict': {
            'item1': 'test',
            'list_item': ['test1']
        },
        'testdict2__merge_dict': {
            'item2': 'test',
            'list_item': ['test2']
        }
    })
    self.assertEqual(results, [
        {
            'item1': 'test',
            'item2': 'test',
            'list_item': ['test1', 'test2']
        }
    ])