public void Ones_ShouldSucceed()
{
VectorXD v = VectorXD.Ones(4);
Assert.True(v.Max() <= 1.0);
Assert.True(v.Min() >= 1.0);
Assert.Equal(4, v.Length);
Assert.Equal(new VectorXD(new[] { 1.0, 1.0, 1.0, 1.0 }), v);
}