py3k.StringIO.getvalue

            logger.setLevel(0)
            hdrc.check_fix(logger=logger, error_level=0)
            assert_equal(str_io.getvalue(), '')
            logger.removeHandler(handler)
            return hdrc, '', ()

        e_lev = level+1
        hdrc.check_fix(logger=logger, error_level=e_lev)
        assert_equal(str_io.getvalue(), '')
        # Logging level below threshold, log appears
        logger.setLevel(level+1)
        logger.setLevel(level-1)
        hdrc = hdr.copy()
        hdrc.check_fix(logger=logger, error_level=e_lev)
        assert_true(str_io.getvalue() != '')

            imageglobals.logger = logger
            hdr.copy().check_fix()
            assert_equal(str_io.getvalue(),
                         'a_str should be lower case; '
                         'set a_str to lower case\n')

    str_io = StringIO()
    rep.write_raise(str_io)
    assert_equal(str_io.getvalue(), '')
    rep = Report(ValueError, 20, 'msg', 'fix')
    rep.write_raise(str_io)
    assert_equal(str_io.getvalue(), '')
    rep.problem_level = 30
    rep.write_raise(str_io)
    assert_equal(str_io.getvalue(), 'Level 30: msg; fix\n')

    rep.fix_msg = ''
    rep.write_raise(str_io)
    assert_equal(str_io.getvalue(), 'Level 30: msg\n')
    rep.fix_msg = 'fix'
    str_io.truncate(0); str_io.seek(0)
    # If we drop the level, nothing goes to the log
    rep.problem_level = 20
    rep.write_raise(str_io)
    assert_equal(str_io.getvalue(), '')

            imageglobals.logger = logger
            hdr.copy().check_fix()
            assert_equal(str_io.getvalue(), PIXDIM0_MSG + '\n')
            # Check that error_level in fact causes error to be raised
            imageglobals.error_level = 30