public void GetNextPointOnSpiral_ReturnCorrectCoordinates()
{
var coefSpiralEquation = 0.5;
var anglePhi = 0.0;
var deltaAnglePhi = Math.PI / 90;
for (var i = 0; i < 100; i++)
{
var x = Math.Round(coefSpiralEquation * anglePhi * Math.Cos(anglePhi));
var y = Math.Round(coefSpiralEquation * anglePhi * Math.Sin(anglePhi));
spiral.GetNextPointOnSpiral().Should().BeEquivalentTo(new Point((int)x, (int)y));
anglePhi += deltaAnglePhi;
}
}
