public void CalculateDistance_CoordinateCoordinate_Returns0ForSameCoordinate()
{
Coordinate c = new Coordinate(10.1, 100.2);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c, c);
Assert.Equal(0, distance);
}
public void CalculateDistance_CoordinateCoordinate_ReturnsDistanceOf2Points()
{
Coordinate c1 = new Coordinate(0, 0);
Coordinate c2 = new Coordinate(0, 90);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c1, c2);
double expectedDistance = Math.PI * 2 * Sphere2DCalculator.EarthRadius / 4;
Assert.InRange<double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
public void CalculateArea_CalculatesAreaOfPolygonPointFirstPointDoesNotEqualLast()
{
Coordinate[] coordinates = new Coordinate[] { new Coordinate(0, 0), new Coordinate(90, 0), new Coordinate(0, 90) };
Mock<ICoordinateList> listM = new Mock<ICoordinateList>();
listM.SetupGet(list => list.Count).Returns(3);
listM.Setup(list => list[0]).Returns(coordinates[0]);
listM.Setup(list => list[1]).Returns(coordinates[1]);
listM.Setup(list => list[2]).Returns(coordinates[2]);
double expectedArea = 4 * Math.PI * Sphere2DCalculator.EarthRadius * Sphere2DCalculator.EarthRadius / 8;
Sphere2DCalculator target = new Sphere2DCalculator();
double area = target.CalculateArea(listM.Object);
Assert.InRange<double>(area, expectedArea * 0.995, expectedArea * 1.005);
}
public void CalculateDistance_LineCoordinate_ReturnsDistanceToEndPointIfPointIsOutsideLineSegment2()
{
Coordinate a = new Coordinate(0, 0);
Coordinate b = new Coordinate(90, 0);
Coordinate c = new Coordinate(5, 45);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c, a, b, LineMode.LineSegment);
double expectedDistance = target.CalculateDistance(a, c);
Assert.InRange<double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
public void CalculateDsitance_CoordinateCoordinate_CalculateDistancesAcross180DegBoundary()
{
Coordinate c1 = new Coordinate(-135, 0);
Coordinate c2 = new Coordinate(135, 0);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c1, c2);
double expectedDistance = Math.PI * 2 * Sphere2DCalculator.EarthRadius / 4;
Assert.InRange<double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
public void CalculateDistance_LineCoordinate_ReturnsDistanceToLineSegment()
{
Coordinate a = new Coordinate(0, 0);
Coordinate b = new Coordinate(90, 0);
Coordinate c = new Coordinate(45, 45);
Sphere2DCalculator target = new Sphere2DCalculator();
double distance = target.CalculateDistance(c, a, b, LineMode.LineSegment);
double expectedDistance = Math.PI * 2 * Sphere2DCalculator.EarthRadius / 8;
Assert.InRange<double>(distance, expectedDistance * 0.995, expectedDistance * 1.005);
}
