use std::str::FromStr;

use crate::{matrix::Matrix, error::ParseMatrixError};

#[test]
pub fn test_matrix_add() -> Result<(), ParseMatrixError> {
    let m1 = Matrix::from_str("1,2,3\n4,5,6\n7,8,9")?;
    let m2 = Matrix::from_str("1,1,1\n1,1,1\n1,1,1")?;
    let t = Matrix::from_str("2,3,4\n5,6,7\n8,9,10")?;
    assert_eq!(&m1 + &m2, t);
    Ok(())
}
#[test]
pub fn test_matrix_determinate() -> Result<(), ParseMatrixError> {
    let m = Matrix::from_str("3,4\n5,6")?;
    let det = 3 * 6 - 4 * 5;
    assert_eq!(m.determinant(), det);
    Ok(())
}
#[test]
pub fn test_matrix_transposition() -> Result<(), ParseMatrixError> {
    let m = Matrix::from_str("1,2,3\n4,5,6\n7,8,9")?;
    let t = Matrix::from_str("1,4,7\n2,5,8\n3,6,9")?;
    assert_eq!(m.transpose(), t);
    Ok(())
}
#[test]
pub fn test_matrix_mul() -> Result<(), ParseMatrixError> {
    let m1 = Matrix::from_str("1,2\n1,2")?;
    let m2 = Matrix::from_str("1,3\n2,4")?;
    let m3 = Matrix::from_str("1,2\n3,4")?;
    let m4 = Matrix::from_str("1\n2")?;
    let t1 = Matrix::from_str("5,11\n5,11")?;
    let t2 = Matrix::from_str("5\n11")?;
    assert_eq!(&m1 * &m2, t1);
    assert_eq!(&m3 * &m4, t2);
    Ok(())
}
#[test]
#[should_panic]
pub fn test_matrix_add_bad_dimensions() -> () {
    let bad = Matrix::from_str("1,1,1\n1,1,1").unwrap();
    let add = Matrix::from_str("1,1\n1,1").unwrap();
    let _ = &bad + &add;
}