test_MimeWriter.py

"""Test program for MimeWriter module.

The test program was too big to comfortably fit in the MimeWriter
class, so it's here in its own file.

This should generate Barry's example, modulo some quotes and newlines.

"""


from MimeWriter import MimeWriter

SELLER = '''\
INTERFACE Seller-1;

TYPE Seller = OBJECT
    DOCUMENTATION "A simple Seller interface to test ILU"
    METHODS
            price():INTEGER,
    END;
'''

BUYER = '''\
class Buyer:
    def __setup__(self, maxprice):
        self._maxprice = maxprice

    def __main__(self, kos):
        """Entry point upon arrival at a new KOS."""
        broker = kos.broker()
        # B4 == Barry's Big Bass Business :-)
        seller = broker.lookup('Seller_1.Seller', 'B4')
        if seller:
            price = seller.price()
            print 'Seller wants $', price, '... '
            if price > self._maxprice:
                print 'too much!'
            else:
                print "I'll take it!"
        else:
            print 'no seller found here'
'''                                     # Don't ask why this comment is here

STATE = '''\
# instantiate a buyer instance and put it in a magic place for the KOS
# to find.
__kp__ = Buyer()
__kp__.__setup__(500)
'''

SIMPLE_METADATA = [
        ("Interpreter", "python"),
        ("Interpreter-Version", "1.3"),
        ("Owner-Name", "Barry Warsaw"),
        ("Owner-Rendezvous", "bwarsaw@cnri.reston.va.us"),
        ("Home-KSS", "kss.cnri.reston.va.us"),
        ("Identifier", "hdl://cnri.kss/my_first_knowbot"),
        ("Launch-Date", "Mon Feb 12 16:39:03 EST 1996"),
        ]

COMPLEX_METADATA = [
        ("Metadata-Type", "complex"),
        ("Metadata-Key", "connection"),
        ("Access", "read-only"),
        ("Connection-Description", "Barry's Big Bass Business"),
        ("Connection-Id", "B4"),
        ("Connection-Direction", "client"),
        ]

EXTERNAL_METADATA = [
        ("Metadata-Type", "complex"),
        ("Metadata-Key", "generic-interface"),
        ("Access", "read-only"),
        ("Connection-Description", "Generic Interface for All Knowbots"),
        ("Connection-Id", "generic-kp"),
        ("Connection-Direction", "client"),
        ]


def main():
    import sys

    # Toplevel headers

    toplevel = MimeWriter(sys.stdout)
    toplevel.addheader("From", "bwarsaw@cnri.reston.va.us")
    toplevel.addheader("Date", "Mon Feb 12 17:21:48 EST 1996")
    toplevel.addheader("To", "kss-submit@cnri.reston.va.us")
    toplevel.addheader("MIME-Version", "1.0")

    # Toplevel body parts

    f = toplevel.startmultipartbody("knowbot", "801spam999",
                                    [("version", "0.1")], prefix=0)
    f.write("This is a multi-part message in MIME format.\n")

    # First toplevel body part: metadata

    md = toplevel.nextpart()
    md.startmultipartbody("knowbot-metadata", "802spam999")

    # Metadata part 1

    md1 = md.nextpart()
    md1.addheader("KP-Metadata-Type", "simple")
    md1.addheader("KP-Access", "read-only")
    m = MimeWriter(md1.startbody("message/rfc822"))
    for key, value in SIMPLE_METADATA:
        m.addheader("KPMD-" + key, value)
    m.flushheaders()
    del md1

    # Metadata part 2

    md2 = md.nextpart()
    for key, value in COMPLEX_METADATA:
        md2.addheader("KP-" + key, value)
    f = md2.startbody("text/isl")
    f.write(SELLER)
    del md2

    # Metadata part 3

    md3 = md.nextpart()
    f = md3.startbody("message/external-body",
                      [("access-type", "URL"),
                       ("URL", "hdl://cnri.kss/generic-knowbot")])
    m = MimeWriter(f)
    for key, value in EXTERNAL_METADATA:
        md3.addheader("KP-" + key, value)
    md3.startbody("text/isl")
    # Phantom body doesn't need to be written

    md.lastpart()

    # Second toplevel body part: code

    code = toplevel.nextpart()
    code.startmultipartbody("knowbot-code", "803spam999")

    # Code: buyer program source

    buyer = code.nextpart()
    buyer.addheader("KP-Module-Name", "BuyerKP")
    f = buyer.startbody("text/plain")
    f.write(BUYER)

    code.lastpart()

    # Third toplevel body part: state

    state = toplevel.nextpart()
    state.addheader("KP-Main-Module", "main")
    state.startmultipartbody("knowbot-state", "804spam999")

    # State: a bunch of assignments

    st = state.nextpart()
    st.addheader("KP-Module-Name", "main")
    f = st.startbody("text/plain")
    f.write(STATE)

    state.lastpart()

    # End toplevel body parts

    toplevel.lastpart()


main()