output.seek(0)

    testutil.check_lines_match(iter(output), expect_patterns)

def run_outgoing(rt_id, postings, rt_client=None):

    if rt_client is None:

        rt_client = RTClient()

    if not isinstance(postings, core.RelatedPostings):

        postings = accruals_by_meta(postings, rt_id, 'rt-id', wrap_type=accrual.AccrualPostings)

    output = io.StringIO()

    report.run({rt_id: postings})

    return output

@pytest.mark.parametrize('invoice,expected', [

    ('rt:505/5050', "Zero balance outstanding since 2010-05-05"),

    ('rt:510/5100', "Zero balance outstanding since 2010-05-10"),

    groups = {

        key: group

        for _, related in accrual.AccrualPostings.group_by_meta(postings, 'invoice')

        for key, group in related.make_consistent()

    }

    output = io.BytesIO()

    report.run(groups)

    return output

def test_aging_report(accrual_postings):

    output = run_aging_report(accrual_postings)

    check_aging_ods(output)