import pytest

from gitlab import exceptions


def test_error_raises_from_http_error():
    """Methods decorated with @on_http_error should raise from GitlabHttpError."""

    class TestError(Exception):
        pass

    @exceptions.on_http_error(TestError)
    def raise_error_from_http_error():
        raise exceptions.GitlabHttpError

    with pytest.raises(TestError) as context:
        raise_error_from_http_error()
    assert isinstance(context.value.__cause__, exceptions.GitlabHttpError)