public void DistanceToEllipseTangent_BaseTangent1Gradient_ReturnsTrue()
{
// Arrange
PointItem point = new PointItem(10, 10, 0);
double gradient = 1;
bool perpendicular = false;
double result;
double expected = 202.39194648;
// Act
result = point.DistanceToEllipseTangent(perpendicular, gradient);
// Assert
Assert.AreEqual(expected, result, 0.00000001);
}
public void DistanceToEllipseTangent_PerpendicularTangentNegative1Gradient_ReturnsTrue()
{
// Arrange
PointItem point = new PointItem(10, 10, 0);
double gradient = -1;
bool perpendicular = true;
double result;
double expected = 188.24981085;
// Act
result = point.DistanceToEllipseTangent(perpendicular, gradient);
// Assert
Assert.AreEqual(expected, result, 0.00000001);
}
public void DistanceToEllipseTangent_BaseTangentInfGradient_ReturnsTrue()
{
// Arrange
PointItem point = new PointItem(10, 10, 0);
double gradient = double.PositiveInfinity;
bool perpendicular = false;
double result;
double expected = 265;
// Act
result = point.DistanceToEllipseTangent(perpendicular, gradient);
// Assert
Assert.AreEqual(expected, result);
}
public void DistanceToEllipseTangent_PerpendicularTangent0Gradient_ReturnsTrue()
{
// Arrange
PointItem point = new PointItem(10, 10, 0);
double gradient = 0;
bool perpendicular = true;
double result;
double expected = 140;
// Act
result = point.DistanceToEllipseTangent(perpendicular, gradient);
// Assert
Assert.AreEqual(expected, result);
}