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import py
from pypy.conftest import option
from pypy.interpreter.error import OperationError
def import_lib_pypy(space, name, skipmsg=None):
"""Import a top level module ensuring it's sourced from the lib_pypy
package.
Raises a pytest Skip on ImportError if a skip message was specified.
"""
try:
# app-level import should find it from the right place (we
# assert so afterwards) as long as a builtin module doesn't
# overshadow it
failed = ("%s didn't import from lib_pypy. Is a usemodules directive "
"overshadowing it?" % name)
importline = ("import %s; assert 'lib_pypy' in %s.__file__, %r; "
"return %s" % (name, name, failed, name))
if option.runappdirect:
importline = "from lib_pypy " + importline
return space.appexec([], "(): " + importline)
except OperationError as e:
if skipmsg is None or not e.match(space, space.w_ImportError):
raise
py.test.skip('%s (%s))' % (skipmsg, str(e)))
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