public void Test_No_solutions_All_Zero()
{
const double a = 0;
const double b = 0;
const double c = 0;
var q = new Quad.Quad(a, b, c);
q.Calculate();
Assert.AreEqual(double.NaN, q.X1);
Assert.AreEqual(double.NaN, q.X2);
}
public void Test_Two_Solution_B_Equal_To_Zero()
{
const double a = 5;
const double b = 0;
const double c = -125;
var q = new Quad.Quad(a, b, c);
q.Calculate();
Assert.AreEqual(5.0, q.X1);
Assert.AreEqual(-5.0, q.X2);
}
public void Test_No_solutions()
{
const double a = 1;
const double b = 2;
const double c = 3;
var q = new Quad.Quad(a, b, c);
q.Calculate();
Assert.AreEqual(double.NaN, q.X1);
Assert.AreEqual(double.NaN, q.X2);
}
public void Test_One_Solution_A_Equal_To_Zero()
{
const double a = 0;
const double b = 4;
const double c = 4;
var q = new Quad.Quad(a, b, c);
q.Calculate();
Assert.AreEqual(-1.0, q.X1);
Assert.AreEqual(double.NaN, q.X2);
}
public void Test_Two_Solutions()
{
const double a = 1;
const double b = 5;
const double c = 3;
var q = new Quad.Quad(a, b, c);
q.Calculate();
Assert.AreEqual(-0.6972243622680054, q.X1);
Assert.AreEqual(-4.302775637731995, q.X2);
}