@Test
public void testExec2() {

    NodeValue v1 = NodeValue.makeDouble(10.0);
    NodeValue v2 = NodeValue.makeDouble(20.0);
    NodeValue v3 = NodeValue.makeDouble(11.0);
    NodeValue v4 = NodeValue.makeDouble(20.0);
    NodeValue v5 = NodeValue.makeString(Unit_URI.KILOMETER_URL);
    GreatCircleFF instance = new GreatCircleFF();
    double expResult = 111.1950;
    double result = instance.exec(v1, v2, v3, v4, v5).getDouble();
    assertEquals(expResult, result, 0.0001);
}