# Copyright 2013-2017 DataStax, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from cassandra.cython_deps import HAVE_CYTHON, HAVE_NUMPY
try:
    from tests.integration import VERIFY_CYTHON
except ImportError:
    VERIFY_CYTHON = False

try:
    import unittest2 as unittest
except ImportError:
    import unittest  # noqa

def cyimport(import_path):
    """
    Import a Cython module if available, otherwise return None
    (and skip any relevant tests).
    """
    if HAVE_CYTHON:
        import pyximport
        py_importer, pyx_importer = pyximport.install()
        mod = __import__(import_path, fromlist=[True])
        pyximport.uninstall(py_importer, pyx_importer)
        return mod


# @cythontest
# def test_something(self): ...
cythontest = unittest.skipUnless((HAVE_CYTHON or VERIFY_CYTHON) or VERIFY_CYTHON, 'Cython is not available')
notcython = unittest.skipIf(HAVE_CYTHON, 'Cython not supported')
numpytest = unittest.skipUnless((HAVE_CYTHON and HAVE_NUMPY) or VERIFY_CYTHON, 'NumPy is not available')