public void Matrix_GenerateCofactorMatrixTest() { Matrix matrix1 = new Matrix(3,3); double[] matrix1Column1 = { 1, 5, 6 }; double[] matrix1Column2 = { 2, 4, 7 }; double[] matrix1Column3 = { 3, 6, 8 }; matrix1.SetColumn(0, matrix1Column1); matrix1.SetColumn(1, matrix1Column2); matrix1.SetColumn(2, matrix1Column3); Matrix expectedResult = new Matrix(3,3); double[] expectedResultColumn1 = { -10, 5, 0 }; double[] expectedResultColumn2 = { -4, -10, 9}; double[] expectedResultColumn3 = { 11, 5, -6 }; expectedResult.SetColumn(0, expectedResultColumn1); expectedResult.SetColumn(1, expectedResultColumn2); expectedResult.SetColumn(2, expectedResultColumn3); Matrix actualResult = matrix1.GenerateCofactorMatrix(); bool equalityResult = (actualResult == expectedResult); equalityResult.Should().BeTrue(); }