use na::{Vector2,Vector3,Vector4,Vector5,DVector, DMatrix, Matrix5, Matrix3};
use std::panic;

//
// Should mimic calculations in Python's scipy library
// >>>from scipy.signal import convolve
//

// >>> convolve([1,2,3,4],[1,2],"same")
// array([ 1,  4,  7, 10])
#[test]
fn convolve_same_check(){
    // Static Tests
    let actual_s =  Vector4::new(1.0, 4.0, 7.0, 10.0);
    let expected_s = Vector4::new(1.0, 2.0, 3.0, 4.0).convolve_same(Vector2::new(1.0, 2.0));

    assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));

    // Dynamic Tests
    let actual_d =  DVector::from_vec(vec![1.0, 4.0, 7.0, 10.0]);
    let expected_d = DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]).convolve_same(DVector::from_vec(vec![1.0, 2.0]));

    assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));

    // Panic Tests
    // These really only apply to dynamic sized vectors
    assert!(
        panic::catch_unwind(|| {
            DVector::from_vec(vec![1.0, 2.0]).convolve_same(DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DVector::<f32>::from_vec(vec![]).convolve_same(DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]).convolve_same(DVector::<f32>::from_vec(vec![]));
        }).is_err()
    );
}

// >>> convolve([1,2,3,4],[1,2],"full")
// array([ 1, 4,  7, 10, 8])
#[test]
fn convolve_full_check(){
    // Static Tests
    let actual_s =  Vector5::new(1.0, 4.0, 7.0, 10.0, 8.0);
    let expected_s = Vector4::new(1.0, 2.0, 3.0, 4.0).convolve_full(Vector2::new(1.0, 2.0));

    assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));

    // Dynamic Tests
    let actual_d =  DVector::from_vec(vec![1.0, 4.0, 7.0, 10.0, 8.0]);
    let expected_d = DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]).convolve_full(DVector::from_vec(vec![1.0, 2.0]));

    assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));

    // Panic Tests
    // These really only apply to dynamic sized vectors
    assert!(
        panic::catch_unwind(|| {
            DVector::from_vec(vec![1.0, 2.0] ).convolve_full(DVector::from_vec(vec![1.0, 2.0,  3.0,  4.0] ));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DVector::<f32>::from_vec(vec![]).convolve_full(DVector::from_vec(vec![1.0, 2.0,  3.0,  4.0] ));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DVector::from_vec(vec![1.0, 2.0,  3.0,  4.0] ).convolve_full(DVector::<f32>::from_vec(vec![]));
        }).is_err()
    );
}

// >>> convolve([1, 2, 3, 4],[1, 2],"valid")
// array([4, 7, 10])
#[test]
fn convolve_valid_check(){
    // Static Tests
    let actual_s =  Vector3::from_vec(vec![4.0, 7.0, 10.0]);
    let expected_s = Vector4::new(1.0, 2.0, 3.0, 4.0).convolve_valid( Vector2::new(1.0, 2.0));

    assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));

    // Dynamic Tests
    let actual_d =  DVector::from_vec(vec![4.0, 7.0, 10.0]);
    let expected_d = DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]).convolve_valid(DVector::from_vec(vec![1.0, 2.0]));

    assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));

    // Panic Tests
    // These really only apply to dynamic sized vectors
    assert!(
        panic::catch_unwind(|| {
            DVector::from_vec(vec![1.0, 2.0]).convolve_valid(DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DVector::<f32>::from_vec(vec![]).convolve_valid(DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DVector::from_vec(vec![1.0, 2.0, 3.0, 4.0]).convolve_valid(DVector::<f32>::from_vec(vec![]));
        }).is_err()
    );

}

//// >>> convolve([1,2,3,4],[1,2],"same")
//// array([ 1,  4,  7, 10])
//#[test]
//fn convolve_same_integers_check(){
//    // Static Tests
//    let actual_s =  Vector4::new(1, 4, 7, 10);
//    let expected_s = Vector4::new(1, 2, 3, 4).convolve_same(Vector2::new(1, 2));
//
//    assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));
//
//    // Dynamic Tests
//    let actual_d =  DVector::from_vec(vec![1, 4, 7, 10]);
//    let expected_d = DVector::from_vec(vec![1, 2, 3, 4]).convolve_same(DVector::from_vec(vec![1, 2]));
//
//    assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));
//
//    // Panic Tests
//    // These really only apply to dynamic sized vectors
//    assert!(
//        panic::catch_unwind(|| {
//            DVector::from_vec(vec![1, 2]).convolve_same(DVector::from_vec(vec![1, 2, 3, 4]));
//        }).is_err()
//    );
//
//    assert!(
//        panic::catch_unwind(|| {
//            DVector::<usize>::from_vec(vec![]).convolve_same(DVector::from_vec(vec![1, 2, 3, 4]));
//        }).is_err()
//    );
//
//    assert!(
//        panic::catch_unwind(|| {
//            DVector::from_vec(vec![1, 2, 3, 4]).convolve_same(DVector::<usize>::from_vec(vec![]));
//        }).is_err()
//    );
//}

//
// Should mimic calculations in Python's scipy library
// >>>from scipy.signal import convolve
//

// >>> convolve([1,2,3,4],[1,2],"same")
// array([ 1,  4,  7, 10])
#[test]
fn convolve_same_mat_check(){
    let actual_s =  Matrix5::from_vec( vec![3.0,4.0,4.0,4.0,3.0,4.0,5.0,5.0,5.0,4.0,4.0,5.0,5.0,5.0,4.0,4.0,5.0,5.0,5.0,4.0,3.0,4.0,4.0,4.0,3.0]);
    let expected_s = Matrix5::from_element(1.0).smat_convolve_full(Matrix3::from_vec(vec![0.0,1.0,0.0,1.0,1.0,1.0,0.0,1.0,0.0]));

    assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));

    let actual_d =  DMatrix::from_vec(5,5, vec![3.0,4.0,4.0,4.0,3.0,4.0,5.0,5.0,5.0,4.0,4.0,5.0,5.0,5.0,4.0,4.0,5.0,5.0,5.0,4.0,3.0,4.0,4.0,4.0,3.0]);
    let expected_d = DMatrix::from_element(5,5,1.0).dmat_convolve_full(DMatrix::from_vec(3,3,vec![0.0,1.0,0.0,1.0,1.0,1.0,0.0,1.0,0.0]));

    assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));

    // Panic Tests
    // These really only apply to dynamic sized vectors
    assert!(
        panic::catch_unwind(|| {
            DMatrix::from_element(2,2,1.0).dmat_convolve_full(DMatrix::from_vec(3,3,vec![0.0,1.0,0.0,1.0,1.0,1.0,0.0,1.0,0.0]));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DMatrix::from_element(0,0,1.0).dmat_convolve_full(DMatrix::from_vec(3,3,vec![0.0,1.0,0.0,1.0,1.0,1.0,0.0,1.0,0.0]));
        }).is_err()
    );

    assert!(
        panic::catch_unwind(|| {
            DMatrix::from_element(5,5,1.0).dmat_convolve_full(DMatrix::from_vec(0,0,vec![]));
        }).is_err()
    );
}