How to use metar - 10 common examples

def test_035_parseTime_suppress_auto_month():
    """Check that explicit month suppresses automatic month rollback."""
    next_day = tomorrow.day
    if next_day > today.day:
        last_year = today.year - 1

        timestr = "%02d1651Z" % (next_day)
        report = Metar.Metar("KEWR " + timestr, month=1)
        assert report.decode_completed
        assert report.time.day == next_day
        assert report.time.month == 1
        if today.month > 1:
            assert report.time.year == today.year
        else:
            assert report.time.year == last_year

def test_020_parseStation_legal():
    """Check parsing of the station code."""
    assert Metar.Metar("KEWR").station_id == "KEWR"
    assert Metar.Metar("METAR KEWR").station_id == "KEWR"
    assert Metar.Metar("METAR COR KEWR").station_id == "KEWR"
    assert Metar.Metar("BIX1").station_id == "BIX1"
    assert Metar.Metar("K256").station_id == "K256"

def test_020_parseStation_legal():
    """Check parsing of the station code."""
    assert Metar.Metar("KEWR").station_id == "KEWR"
    assert Metar.Metar("METAR KEWR").station_id == "KEWR"
    assert Metar.Metar("METAR COR KEWR").station_id == "KEWR"
    assert Metar.Metar("BIX1").station_id == "BIX1"
    assert Metar.Metar("K256").station_id == "K256"

def report_nowind(vis_group):
        """(Macro) Return Metar object for a report containing the given
        visibility group, without a preceeding wind group.
        """
        return Metar.Metar(sta_time + vis_group)

def report(vis_group):
        """(Macro) Return Metar object for a report given visibility group."""
        return Metar.Metar(sta_time + "09010KT " + vis_group)

def report(runway_state):
        """(Macro) Return Metar object for  given runway state group"""
        sample_metar = (
            "EGNX 191250Z VRB03KT 9999 -RASN FEW008 SCT024 " "BKN046 M01/M03 Q0989 "
        )
        return Metar.Metar(sample_metar + " " + runway_state)

def test_031_parseTime_specify_year():
    """Check that the year can be specified."""
    other_year = 2003

    report = Metar.Metar("KEWR 101651Z", year=other_year)
    assert report.decode_completed
    assert report.time.year == other_year

def report(vis_group):
        """(Macro) Return Metar object for a report with the vis group."""
        return Metar.Metar(sta_time + "09010KT " + vis_group)

def test_error_checking():
    """Test exception raising."""
    with pytest.raises(ValueError):
        distance("10SM")
    with pytest.raises(ValueError):
        distance("M1/2SM")
    with pytest.raises(ValueError):
        distance("1000", "M", "=")
    with pytest.raises(ValueError):
        distance("1000", "M", "gt")
    with pytest.raises(UnitsError):
        distance("10", "NM")
    with pytest.raises(UnitsError):
        distance(distance("1000").value, "furlongs")
    with pytest.raises(UnitsError):
        distance(distance("500").string, "yards")

def test_defaults():
    """Test defaults for units."""
    assert distance("10").value() == 10.0
    assert distance("1000").value("M") == 1000.0
    assert distance("1500").string() == "1500 meters"
    assert distance("1500", None).string() == "1500 meters"
    assert distance("5", "SM").string() == "5 miles"