Function test_design_matrix

src/regression.rs:213–223

()

    #[test]
    fn test_design_matrix() {
        let x = mat![
            7.0, 2.0, 3.0; 
            4.0, 8.0, 5.0
        ];
        let y = x.design_matrix();
        assert_eq!(
            y.buf(),
            &[1.0, 7.0, 2.0, 3.0, 1.0, 4.0, 8.0, 5.0]
        );
    }

    #[test]
    fn test_error() {