% Exposure Notification System tests
#
# Type the following command to launch start the tests:
# $ test/run_tests -P "load_contrib('exposure_notification')" -t test/contrib/exposure_notification.uts

+ ENS tests

= Setup

def next_eir(p):
   return EIR_Hdr(p[Padding].load)

= Presence check

Exposure_Notification_Frame

= Raw payload copied from BluetoothExplorer.app

d = hex_bytes('17df1d67405e3395470e62ca4fda6a9303687b31')
p = Exposure_Notification_Frame(d)

assert p.identifier == hex_bytes('17df1d67405e3395470e62ca4fda6a93')
assert p.metadata == hex_bytes('03687b31')

= Raw captured payload

d = hex_bytes('02011a03036ffd17166ffde23f352fa09307a85d4194912443180d484dc151')
p = EIR_Hdr(d)

# First is a flags header
assert EIR_Flags in p

# Then the 16-bit Service Class ID
p = next_eir(p)
assert p[EIR_CompleteList16BitServiceUUIDs].svc_uuids == [
    EXPOSURE_NOTIFICATION_UUID]

# Then the ENS
p = next_eir(p)
assert p[EIR_ServiceData16BitUUID].svc_uuid == EXPOSURE_NOTIFICATION_UUID
assert p[Exposure_Notification_Frame].identifier == hex_bytes(
    'e23f352fa09307a85d4194912443180d')
assert p[Exposure_Notification_Frame].metadata == hex_bytes('484dc151')

# Rebuild the payload.
p2 = p[Exposure_Notification_Frame].build_eir()

# Our captured payload was from a mobile phone, but build_eir presumes that
# we're broadcasting as an non-connectable, LE-only beacon. We need to adjust
# these flags to match the captured packet.
p2[0] = EIR_Hdr() / EIR_Flags(flags=[
    'general_disc_mode', 'simul_le_br_edr_ctrl', 'simul_le_br_edr_host'])

# Ensure we didn't mutate LowEnergyBeaconHelper.base_eir just then.
assert LowEnergyBeaconHelper.base_eir[0][EIR_Flags].flags == [
    'general_disc_mode', 'br_edr_not_supported']

# Assemble all packet bytes
assert b''.join(map(raw, p2)) == d