def testRectangleEncode(self):
year = datetime.datetime.utcnow().year
when = datetime.datetime(year, 9, 4, 15, 25)
duration = 360
scale_factor = 10
lon = -71.91
lat = 41.1416666667
precision = 4
e_dim = 400
n_dim = 200
orientation_deg = 42
an = AreaNotice(area_type=97, when=when, duration_min=duration,
link_id=102, mmsi=366123456)
rect = AreaNoticeRectangle(lon, lat, e_dim, n_dim, orientation_deg,
precision, scale_factor)
an.add_subarea(rect)
self.checkAreaNoticeHeader(an, link_id=102, area_type=97,
timestamp=(9, 4, 15, 25), duration=360)
lines = an.get_aivdm(sequence_num=0, channel='A')
self.assertEqual(len(lines), 1)
expected_msg = '!AIVDM,1,1,0,A,85M:Ih1KmPAVhjAs80e0;cKBN1N:W8Q@:2`0,0*0C'
expected_an = AreaNotice(nmea_strings=[expected_msg])
expected_bits = expected_an.get_bits()
bits = an.get_bits()
self.assertEqual(expected_bits, bits)
self.assertEqual(lines[0], expected_msg)
def testCircleEncode(self):
# Test against 'Sample AN Data RTCMv1.xlsx' circle
year = datetime.datetime.utcnow().year
when = datetime.datetime(year, 9, 4, 15, 25)
# Match the USCG sample
duration = 2880
an = AreaNotice(area_type=13, when=when, duration_min=duration,
link_id=101, mmsi=366123456)
circle = AreaNoticeCircle(lon=-71.935, lat=41.236666667, radius=1800,
precision=4, scale_factor=10)
an.add_subarea(circle)
lines = an.get_aivdm(sequence_num=0, channel='A')
self.assertEqual(len(lines), 1)
expected_msg = '!AIVDM,1,1,0,A,85M:Ih1KmPAU6jAs85`03cJm;1NHQhPFP000,0*19'
expected_an = AreaNotice(nmea_strings=[expected_msg])
expected_bits = expected_an.get_bits()
bits = an.get_bits()
self.assertEqual(expected_bits, bits)
self.assertEqual(lines[0], expected_msg)