#
# This file is part of the GROMACS molecular simulation package.
#
# Copyright (c) 2019, by the GROMACS development team, led by
# Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
# and including many others, as listed in the AUTHORS file in the
# top-level source directory and at http://www.gromacs.org.
#
# GROMACS is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2.1
# of the License, or (at your option) any later version.
#
# GROMACS is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with GROMACS; if not, see
# http://www.gnu.org/licenses, or write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
#
# If you want to redistribute modifications to GROMACS, please
# consider that scientific software is very special. Version
# control is crucial - bugs must be traceable. We will be happy to
# consider code for inclusion in the official distribution, but
# derived work must not be called official GROMACS. Details are found
# in the README & COPYING files - if they are missing, get the
# official version at http://www.gromacs.org.
#
# To help us fund GROMACS development, we humbly ask that you cite
# the research papers on the package. Check out http://www.gromacs.org.

"""Test gmxapi functionality described in roadmap.rst."""

import gmxapi as gmx
import pytest
from gmxapi.version import has_feature


@pytest.mark.skipif(not has_feature('fr1'),
                    reason="Feature level not met.")
def test_fr1():
    """FR1: Wrap importable Python code.

    gmxapi compatible operations are implemented with simple machinery that allows
    compartmentalized progress on functionality to be highly decoupled from
    implementing user-facing tools. Tools are provided in `gmx.operation` and
    demonstrated by implementing `gmx.commandline_operation`.
    """
    # commandline_operation helper creates a set of operations
    # that includes the discovery and execution of the program
    # named in `executable`.
    operation = gmx.commandline_operation(executable='true')
    operation.run()
    assert operation.output.returncode.result() == 0

    operation = gmx.commandline_operation(executable='false')
    operation.run()
    assert operation.output.returncode.result() == 1
