public void RectangularMatrixEquality()
{
RectangularMatrix A = new RectangularMatrix(new double[, ] {
{ 1.0, 2.0, 3.0 },
{ 4.0, 5.0, 6.0 }
});
RectangularMatrix AC = A.Copy();
RectangularMatrix B = 2.0 * A;
// Equality operator
Assert.IsTrue(A == AC);
Assert.IsTrue(AC == A);
Assert.IsFalse(A == B);
Assert.IsFalse(B == A);
Assert.IsFalse(A == null);
Assert.IsFalse(null == A);
Assert.IsTrue((RectangularMatrix)null == (RectangularMatrix)null);
// Inequality operator
Assert.IsFalse(A != AC);
Assert.IsFalse(AC != A);
Assert.IsTrue(A != B);
Assert.IsTrue(B != A);
Assert.IsTrue(A != null);
Assert.IsTrue(null != A);
Assert.IsFalse((RectangularMatrix)null != (RectangularMatrix)null);
// Equals method
Assert.IsTrue(A.Equals(AC));
Assert.IsFalse(A.Equals(B));
Assert.IsFalse(A.Equals(new object()));
Assert.IsFalse(A.Equals(null));
}