def test__load_yaml_success(loader):
res = loader._load_yaml('---\ntest: string')
assert isinstance(res, dict)
assert res['test'] == 'string'
res = loader._load_yaml('{"test": "string"}')
assert isinstance(res, dict)
assert res['test'] == 'string'
def test__load_yaml_failure(loader):
res = loader._load_yaml('---\ntest: string:')
assert res is None