public void ArgumentExceptionTest()
{
double[,] A = { { 0, 0 }, { 0, 0 } };
double[] B = { 0, 0 };
LinearEquationSystem system = new LinearEquationSystem(A, B);
Assert.Throws <ArgumentException>(() => system.Solve());
}
public void ThreedimensionalArrayTest()
{
double[,] A = { { 2, 1, -1 }, { 3, 2, 2 }, { 1, 0, 1 } };
double[] B = { 3, -7, -2 };
double[] expected = { 1, -2, -3 };
LinearEquationSystem system = new LinearEquationSystem(A, B);
var actual = system.Solve();
CollectionAssert.AreEqual(expected, actual);
}
public void TwodimensionalArrayTest()
{
double[,] A = { { 1, 2 }, { 1, 3 } };
double[] B = { 2, 1 };
double[] expected = { 4, -1 };
LinearEquationSystem system = new LinearEquationSystem(A, B);
var actual = system.Solve();
CollectionAssert.AreEqual(expected, actual);
}
public void CanSolveSimpleLinearEquationSystem()
{
// 2x = 1
var equation = new LinearEquation
{
Coefficients = new[] { 2.0 },
Result = 1
};
var linearEquationSystem = new LinearEquationSystem(equation);
Assert.AreEqual(0.5, linearEquationSystem.Solve()[0]);
}
public void CanSolveLinearEquationSystem()
{
// x - y + 2z = 6
var firstEquation = new LinearEquation(new[] { 1.0, -1.0, 2.0 }, 6);
// 2x + 3y + 2z = 11
var secondEquation = new LinearEquation(new[] { 2.0, 3.0, 2.0 }, 11);
// 3x + 2y + z = 8
var thirdEquation = new LinearEquation(new[] { 3.0, 2.0, 1.0 }, 8);
var linearEquationSystem = new LinearEquationSystem(firstEquation, secondEquation, thirdEquation);
double[] results = linearEquationSystem.Solve();
Assert.AreEqual(1, results[0]);
Assert.AreEqual(1, results[1]);
Assert.AreEqual(3, results[2]);
}
