tests = [
    ("import hell.first_circle"         , "('hell.first_circle', None)"  ),
    ("import hell.first_circle as limbo", "('hell.first_circle', None)"  ),
    ("from hell.ninth_circle import *"  , "('hell.ninth_circle', ('*',))"),
    ("from hell.ninth_circle import antaeus",
         "('hell.ninth_circle', ('antaeus',))"),
    ("from hell.ninth_circle import antaeus as giant",
         "('hell.ninth_circle', ('antaeus',))")
]

import sys
# Replace __builtin__.__import__ to trace the calls
import __builtin__
def __import__(name, globs, locs, fromlist):
    global result
    result = str((name, fromlist))
    raise ImportError()
__builtin__.__import__ = __import__

if __name__ == "__main__":
    failed = 0
    for statement, expected in tests:
        print 50*"-"
        print "statement:", statement
        print "  - expected:", expected
        try:
            exec(statement)
        except ImportError:
            pass
        print "  - got:     ", result
        if expected != result:
            failed += 1
    if failed:
        print
        print "*** FAILURE:", failed, "errors ***"
        print
    sys.exit(failed)