tests/unit/cython/utils.py

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

import unittest

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')