public void InverseMatrixTestMethod()
{
double[,] firstMatrix = new double[, ] {
{ 1, 2, 0 }, { 3, 2, 1 }, { 0, 1, 2 }
};
MatrixOperations.Matrix.MatrixOperations matrixObject = new MatrixOperations.Matrix.MatrixOperations();
double[,] result = matrixObject.InverseMatrix(firstMatrix);
Console.WriteLine("It is a source matrix");
matrixObject.ShowMatrix(firstMatrix);
Console.WriteLine("It is an inverse matrix");
matrixObject.ShowMatrix(result);
//-0.33 1.33 0.00
//1.33 -0.44 0.11
//0.00 0.11 0.89
Assert.AreEqual(-0.33, result[0, 0], 0.1);
Assert.AreEqual(1.33, result[0, 1], 0.1);
Assert.AreEqual(0.00, result[0, 2], 0.1);
Assert.AreEqual(1.33, result[1, 0], 0.1);
Assert.AreEqual(-0.44, result[1, 1], 0.1);
Assert.AreEqual(0.11, result[1, 2], 0.1);
Assert.AreEqual(0.00, result[2, 0], 0.1);
Assert.AreEqual(0.11, result[2, 1], 0.1);
Assert.AreEqual(0.89, result[2, 2], 0.1);
}
public void TransposeMatrixTestMethod()
{
double[,] firstMatrix = new double[, ] {
{ 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 9 }
};
MatrixOperations.Matrix.MatrixOperations matrixObject = new MatrixOperations.Matrix.MatrixOperations(firstMatrix);
double[,] result = matrixObject.Transpose(firstMatrix);
Console.WriteLine("The source matrix");
matrixObject.ShowMatrix(firstMatrix);
Console.WriteLine("The transposed matrix");
matrixObject.ShowMatrix(result);
Assert.AreEqual(1, result[0, 0]);
Assert.AreEqual(4, result[0, 1]);
Assert.AreEqual(7, result[0, 2]);
Assert.AreEqual(2, result[1, 0]);
Assert.AreEqual(5, result[1, 1]);
Assert.AreEqual(8, result[1, 2]);
Assert.AreEqual(3, result[2, 0]);
Assert.AreEqual(6, result[2, 1]);
Assert.AreEqual(9, result[2, 2]);
//1 4 7
//2 5 8
//3 6 9
}
public void DeterminantCalculationTestMethod()
{
double[,] firstMatrix = new double[, ] {
{ 1, 2, 0 }, { 3, 2, 1 }, { 0, 1, 2 }
};
MatrixOperations.Matrix.MatrixOperations matrixObject = new MatrixOperations.Matrix.MatrixOperations();
double result = matrixObject.Determinant(firstMatrix);
Assert.AreEqual(-9, result);
Console.WriteLine(" deteminant = {0}", result);
}
public void MultiplyMatriciesTestMethod()
{
double[,] firstMatrix = new double[, ] {
{ 1, 1, 1, 1 }, { 2, 2, 2, 2 }, { 3, 3, 3, 3 }
};
double[,] secondMatrix = new double[, ] {
{ 4, 5, 1 }, { 4, 5, 1 }, { 4, 5, 1 }, { 4, 5, 1 }
};
MatrixOperations.Matrix.MatrixOperations matrixObject = new MatrixOperations.Matrix.MatrixOperations();
double[,] result = matrixObject.Multiply(firstMatrix, secondMatrix);
for (int i = 0; i < result.GetLength(0); i++)
{
for (int j = 0; j < result.GetLength(1); j++)
{
Console.Write("{0} ", result[i, j]);
}
Console.WriteLine(Environment.NewLine);
}
matrixObject.ShowMatrix(result);
Assert.AreEqual(16, result[0, 0]);
Assert.AreEqual(20, result[0, 1]);
Assert.AreEqual(4, result[0, 2]);
Assert.AreEqual(32, result[1, 0]);
Assert.AreEqual(40, result[1, 1]);
Assert.AreEqual(8, result[1, 2]);
Assert.AreEqual(48, result[2, 0]);
Assert.AreEqual(60, result[2, 1]);
Assert.AreEqual(12, result[2, 2]);
//16 20 4
//32 40 8
//48 60 12
}