@Test
    public void testOnBoundary() {
        checkLat("N90", 90d);
        checkLat("N90\u00B00'0", 90d);
        checkLat("S90", -90d);
        checkLat("S90\u00B00'0", -90d);

        checkLon("E180", 180d);
        checkLon("E180\u00B00'0", 180d);
        checkLon("W180", -180d);
        checkLon("W180\u00B00'0", -180d);
    }
Tests inputs that are on latitude 90/-90 degrees and longitude 180/-180 degrees.
vespajlib/src/test/java/com/yahoo/geo/OneDegreeParserTestCase.java