def test_setting_gpx_clears_value():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
gps.value_type = GPSValueType.GPX
with open('./src/tests/route.gpx', 'r') as gpx_file:
gps.gpx_file_contents = gpx_file.read()
current_utc = datetime.datetime.utcnow()
assert gps.read_line() == add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4744.0886,N,12215.42,W,1,3,,0,M,0,M,,*'
)
time.sleep(2)
current_utc = datetime.datetime.utcnow()
assert gps.read_line() == add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4744.0886,N,12215.4206,W,1,3,,0,M,0,M,,*'
)
time.sleep(2)
current_utc = datetime.datetime.utcnow()
assert gps.read_line() == add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4744.0856,N,12215.4092,W,1,3,,0,M,0,M,,*'
)
assert gps.read_line() == ''
def test_gps_gpx():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.GPX
with open('./src/tests/route.gpx', 'r') as gpx_file:
gps.gpx_file_contents = gpx_file.read()
current_utc = datetime.datetime.utcnow()
assert gps.read_line() == add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4744.0886,N,12215.42,W,1,3,,0,M,0,M,,*'
)
time.sleep(2)
current_utc = datetime.datetime.utcnow()
assert gps.read_line() == add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4744.0886,N,12215.4206,W,1,3,,0,M,0,M,,*'
)
time.sleep(2)
current_utc = datetime.datetime.utcnow()
assert gps.read_line() == add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4744.0856,N,12215.4092,W,1,3,,0,M,0,M,,*'
)
assert gps.read_line() == ''
def test_checksum():
assert GPSSensor._build_checksum(
'$GPGGA,005206.768,5227.561,N,01230.806,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '68'
assert GPSSensor._build_checksum(
'GPGGA,005207.768,5249.958,N,01308.049,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '6E'
assert GPSSensor._build_checksum(
'$GPGGA,005208.768,5310.190,N,01409.023,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '6A'
assert GPSSensor._build_checksum(
'$GPGGA,005209.768,5300.094,N,01450.881,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '63'
assert GPSSensor._build_checksum(
'$GPGGA,005210.768,5148.313,N,01608.005,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '62'
assert GPSSensor._build_checksum(
'# $GPGGA,005211.768,5142.192,N,01454.836,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '61'
assert GPSSensor._build_checksum(
'$GPGGA,005212.768,5135.443,N,01332.439,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '6F'
assert GPSSensor._build_checksum(
'$GPGGA,005213.768,5153.810,N,01259.150,E,1,12,1.0,0.0,M,0.0,M,,*00'
) == '62'
def test_setting_nmea_clears_value():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.GPX
with open('./src/tests/route.gpx', 'r') as gpx_file:
gps.gpx_file_contents = gpx_file.read()
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
assert gps.read_line(
) == '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
assert gps.read_line() == ''
def test_gps_nmea_repeat_has_delay():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
gps.repeat = True
line = gps.read_line()
assert line == '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
line = gps.read_line()
assert line == ''
line = gps.read_line()
assert line == ''
line = gps.read_line()
assert line == ''
time.sleep(1)
line = gps.read_line()
assert line == '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
def test_gps_nmea():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
assert gps.read_line(
) == '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
assert gps.read_line() == ''
def test_setting_lat_lon_clears_value():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
gps.value_type = GPSValueType.LATLON
gps.lat = -47
gps.lon = -122
gps.number_of_satellites = 3
current_utc = datetime.datetime.utcnow()
expected = add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4700.0,S,12200.0,W,1,3,,0,M,0,M,,*'
)
assert gps.read_line() == expected
assert gps.read_line() == ''
def test_gps_time_setting_when_using_lat_lon_n_e():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.LATLON
gps.lat = 47
gps.lon = 122
gps.number_of_satellites = 3
current_utc = datetime.datetime.utcnow()
line = gps.read_line()
expected = add_checksum_to_expected(
f'$GPGGA,{current_utc.hour:02d}{current_utc.minute:02d}{current_utc.second:02}.00,4700.0,N,12200.0,E,1,3,,0,M,0,M,,*'
)
assert line == expected
assert gps.read_line() == ''
def test_gps_nmea_multiple_sentences_has_delay():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67' + \
'\n' + \
'$GNGGA,020604.001,4739.228833333,S,12207.031866667,E,1,3,,164.7,M,-17.1,M,,*67'
line = gps.read_line()
assert line == '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
line = gps.read_line()
assert line == ''
line = gps.read_line()
assert line == ''
line = gps.read_line()
assert line == ''
time.sleep(1.5)
line = gps.read_line()
assert line == '$GNGGA,020604.001,4739.228833333,S,12207.031866667,E,1,3,,164.7,M,-17.1,M,,*67'
def test_decimal_degree_conversion():
assert GPSSensor._decimal_decrees_to_ddmmm(47.653814) == '4739.22884'
assert GPSSensor._decimal_decrees_to_ddmmm(-47.09565) == '4705.739'
assert GPSSensor._decimal_decrees_to_ddmmm(-47) == '4700.0'
def add_checksum_to_expected(expected: str) -> str:
checksum = GPSSensor._build_checksum(expected)
expected += checksum
return expected
def test_gps_empty_read():
gps = GPSSensor('/dev/ttyAMA0')
char = gps.read()
assert char == ''
def test_gps_empty_read_line():
gps = GPSSensor('/dev/ttyAMA0')
line = gps.read_line()
assert line == ''
def test_gps_nmea_multiple_sentences_has_delay_only_for_gga():
gps = GPSSensor('/dev/ttyAMA0')
gps.value_type = GPSValueType.NMEA
gps.raw_nmea = '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67' + \
'\n' + \
'$GPGSA,A,3,01,02,03,04,05,06,07,08,09,10,11,12,1.0,1.0,1.0*30' + \
'\n' + \
'$GNGGA,020604.001,4739.228833333,S,12207.031866667,E,1,3,,164.7,M,-17.1,M,,*67' + \
'\n' + \
'$GPGSA,A,3,01,02,03,04,05,06,07,08,09,10,11,12,1.0,1.0,1.0*30'
line = gps.read_line()
assert line == '$GNGGA,020604.001,4739.228833333,N,12207.031866667,W,1,3,,164.7,M,-17.1,M,,*67'
line = gps.read_line()
assert line == '$GPGSA,A,3,01,02,03,04,05,06,07,08,09,10,11,12,1.0,1.0,1.0*30'
line = gps.read_line()
assert line == ''
line = gps.read_line()
assert line == ''
time.sleep(1)
line = gps.read_line()
assert line == '$GNGGA,020604.001,4739.228833333,S,12207.031866667,E,1,3,,164.7,M,-17.1,M,,*67'
line = gps.read_line()
assert line == '$GPGSA,A,3,01,02,03,04,05,06,07,08,09,10,11,12,1.0,1.0,1.0*30'
line = gps.read_line()
assert line == ''
line = gps.read_line()
assert line == ''