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from ...tests.helper import catch_warnings
from ..exceptions import AstropyDeprecationWarning
from ...extern.six.moves import reload_module
def test_import_warning():
# this import *maybe* raises the warning too, but we force the matter below
from ..compat import subprocess # pylint: disable=W0611
with catch_warnings() as w:
# this ensures the warning will be re-issues at reload. Without this,
# the warning is missing if you invoke astropy.test twice in the same
# python session
if hasattr(subprocess, '__warningregistry__'):
subprocess.__warningregistry__.clear()
reload_module(subprocess)
assert len(w) == 1
assert w[0].category == AstropyDeprecationWarning
assert w[0].message.args[0] == ("astropy.utils.compat.subprocess is now deprecated "
"- use the Python subprocess module directly instead")
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