public void InfinitelyManySolutions()
{
int n = 3;
SystemOfLinearEquation s = new SystemOfLinearEquation(n);
s.Add(new LinearEquation("2.0, 6.0,-5.0, 10.0"));
s.Add(new LinearEquation("4.0, 12.0, -10.0, 20.0"));
s.Add(new LinearEquation("4.0, 12.0, -10.0, 20.0"));
s.SteppingUp();
Assert.Equals(typeof(ArgumentException), s.SolveSystem());
}
public void CheckNoSolutions()
{
int n = 3;
SystemOfLinearEquation s = new SystemOfLinearEquation(n);
s.Add(new LinearEquation("3.0, 2.0,-4.0, 3.0"));
s.Add(new LinearEquation("6.0, 4.0, -8.0, 15.0"));
s.Add(new LinearEquation("6.0, 4.0, -8.0, 15.0"));
s.SteppingUp();
Assert.Equals(typeof(ArgumentException), s.SolveSystem());
}
public void CorrectAnswer()
{
int n = 3;
SystemOfLinearEquation s = new SystemOfLinearEquation(n);
s.Add(new LinearEquation("3.0, 2.0,-4.0, 3.0"));
s.Add(new LinearEquation("2.0, 3.0, 3.0, 15.0"));
s.Add(new LinearEquation("5.0, -3, 1.0, 14.0"));
s.SteppingUp();
double[] solve1 = new double[] { 3, 1, 2 };
double[] solve2 = s.SolveSystem();
bool check = true;
for (int i = 0; i < n; i++)
{
if (Math.Abs(solve1[i] - solve2[i]) > 1e-9)
{
check = false;
}
}
Assert.AreEqual(true, check);
}