public void NaN()
{
const double a = double.NaN, b = 0, c = 0;
squareEquationRoots expected = squareEquationRoots.None;
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void SimpleRealNumbers()
{
const double a = 1.0, b = 2.0, c = -3.0;
squareEquationRoots expected = squareEquationRoots.NewQuad(1, -3);
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void ExtraSmallRealNumbers()
{
const double a = -1.9999999999E-100, b = -1.9999999999E-100, c = -1.9999999999E-100;
squareEquationRoots expected = squareEquationRoots.None;
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void NotRealNumbers()
{
const double a = double.PositiveInfinity, b = 0, c = 0;
squareEquationRoots expected = squareEquationRoots.None;
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void TwoRoots()
{
const double a = 1, b = 2, c = -3;
squareEquationRoots expected = squareEquationRoots.NewQuad(1, -3);
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void ExtraLargeRealNumbers()
{
const double a = 99999999999999E294, b = double.MaxValue, c = double.MaxValue;
squareEquationRoots expected = squareEquationRoots.None;
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void OneRoot()
{
const double a = 1, b = 2, c = 1;
squareEquationRoots expected = squareEquationRoots.NewQuad(-1, -1);
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void AnyRealNumber()
{
const double a = 0, b = 0, c = 0;
squareEquationRoots expected = squareEquationRoots.Any;
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void _0_0_n()
{
const double a = 0, b = 0, c = 2;
squareEquationRoots expected = squareEquationRoots.None;
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void _0_n_0()
{
const double a = 0, b = 2, c = 0;
squareEquationRoots expected = squareEquationRoots.NewLin(0);
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
public void n_0_0()
{
const double a = 1, b = 0, c = 0;
squareEquationRoots expected = squareEquationRoots.NewQuad(0, 0);
squareEquationRoots result = solveSquareEquation(a, b, c);
Assert.AreEqual(expected, result);
}
