public void ConvertFractionalEarthRadii()
            {
                var input1         = 0.4;
                var expectedValue1 = EARTH_RADIUS_IN_KM * 0.4;

                var input2         = 0.7;
                var expectedValue2 = EARTH_RADIUS_IN_KM * 0.7;

                Assert.AreEqual(expectedValue1, UnitConversions.EarthRadiusToKilometers(input1), DELTA);
                Assert.AreEqual(expectedValue2, UnitConversions.EarthRadiusToKilometers(input2), DELTA);
            }
 public void ConvertZeroEarthRadius()
 {
     Assert.AreEqual(0, UnitConversions.EarthRadiusToKilometers(0), DELTA);
 }
            public void ConvertOneEarthRadius()
            {
                var expectedValue = EARTH_RADIUS_IN_KM;

                Assert.AreEqual(expectedValue, UnitConversions.EarthRadiusToKilometers(1), DELTA);
            }