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#![allow(

clippy::many_single_char_names,

clippy::deref_addrof,

clippy::unreadable_literal,

clippy::many_single_char_names

)]

use defmac::defmac;

use ndarray::prelude::*;

#[test]

fn test_from_shape_fn() {

let step = 3.1;

let h = Array::from_shape_fn((5, 5), |(i, j)| {

f64::sin(i as f64 / step) * f64::cos(j as f64 / step)

});

assert_eq!(h.shape(), &[5, 5]);

}

#[test]

fn test_dimension_zero() {

let a: Array2<f32> = Array2::from(vec![[], [], []]);

assert_eq!(vec![0.; 0], a.into_raw_vec());

let a: Array3<f32> = Array3::from(vec![[[]], [[]], [[]]]);

assert_eq!(vec![0.; 0], a.into_raw_vec());

}

#[test]

#[cfg(feature = "approx")]

fn test_arc_into_owned() {

use approx::assert_abs_diff_ne;

let a = Array2::from_elem((5, 5), 1.).into_shared();

let mut b = a.clone();

b.fill(0.);

let mut c = b.into_owned();

c.fill(2.);

// test that they are unshared

assert_abs_diff_ne!(a, c, epsilon = 0.01);

}

#[test]

fn test_arcarray_thread_safe() {

fn is_send<T: Send>(_t: &T) {}

fn is_sync<T: Sync>(_t: &T) {}

let a = Array2::from_elem((5, 5), 1.).into_shared();

is_send(&a);

is_sync(&a);

}

#[test]

fn test_uninit() {

unsafe {

let mut a = Array::<f32, _>::uninitialized((3, 4).f());

assert_eq!(a.dim(), (3, 4));

assert_eq!(a.strides(), &[1, 3]);

let b = Array::<f32, _>::linspace(0., 25., a.len())

.into_shape(a.dim())

.unwrap();

a.assign(&b);

assert_eq!(&a, &b);

assert_eq!(a.t(), b.t());

}

}

#[test]

fn test_from_fn_c0() {

let a = Array::from_shape_fn((), |i| i);

assert_eq!(a[()], ());

assert_eq!(a.len(), 1);

assert_eq!(a.shape(), &[]);

}

#[test]

fn test_from_fn_c1() {

let a = Array::from_shape_fn(28, |i| i);

for (i, elt) in a.indexed_iter() {

assert_eq!(i, *elt);

}

}

#[test]

fn test_from_fn_c() {

let a = Array::from_shape_fn((4, 7), |i| i);

for (i, elt) in a.indexed_iter() {

assert_eq!(i, *elt);

}

}

#[test]

fn test_from_fn_c3() {

let a = Array::from_shape_fn((4, 3, 7), |i| i);

for (i, elt) in a.indexed_iter() {

assert_eq!(i, *elt);

}

}

#[test]

fn test_from_fn_f0() {

let a = Array::from_shape_fn(().f(), |i| i);

assert_eq!(a[()], ());

assert_eq!(a.len(), 1);

assert_eq!(a.shape(), &[]);

}

#[test]

fn test_from_fn_f1() {

let a = Array::from_shape_fn(28.f(), |i| i);

for (i, elt) in a.indexed_iter() {

assert_eq!(i, *elt);

}

}

#[test]

fn test_from_fn_f() {

let a = Array::from_shape_fn((4, 7).f(), |i| i);

for (i, elt) in a.indexed_iter() {

assert_eq!(i, *elt);

}

}

#[test]

fn test_from_fn_f_with_zero() {

defmac!(test_from_fn_f_with_zero shape => {

let a = Array::from_shape_fn(shape.f(), |i| i);

assert_eq!(a.len(), 0);

assert_eq!(a.shape(), &shape);

});

test_from_fn_f_with_zero!([0]);

test_from_fn_f_with_zero!([0, 1]);

test_from_fn_f_with_zero!([2, 0]);

test_from_fn_f_with_zero!([0, 1, 2]);

test_from_fn_f_with_zero!([2, 0, 1]);

test_from_fn_f_with_zero!([1, 2, 0]);

}

#[test]

fn test_from_fn_f3() {

let a = Array::from_shape_fn((4, 2, 7).f(), |i| i);

for (i, elt) in a.indexed_iter() {

assert_eq!(i, *elt);

}

}

#[test]

fn deny_wraparound_from_vec() {

let five = vec![0; 5];

let five_large = Array::from_shape_vec((3, 7, 29, 36760123, 823996703), five.clone());

assert!(five_large.is_err());

let six = Array::from_shape_vec(6, five.clone());

assert!(six.is_err());

}

#[test]

fn test_ones() {

let mut a = Array::<f32, _>::zeros((2, 3, 4));

a.fill(1.0);

let b = Array::<f32, _>::ones((2, 3, 4));

assert_eq!(a, b);

}

#[should_panic]

#[test]

fn deny_wraparound_zeros() {

//2^64 + 5 = 18446744073709551621 = 3×7×29×36760123×823996703 (5 distinct prime factors)

let _five_large = Array::<f32, _>::zeros((3, 7, 29, 36760123, 823996703));

}

#[should_panic]

#[test]

fn deny_wraparound_reshape() {

//2^64 + 5 = 18446744073709551621 = 3×7×29×36760123×823996703 (5 distinct prime factors)

let five = Array::<f32, _>::zeros(5);

let _five_large = five.into_shape((3, 7, 29, 36760123, 823996703)).unwrap();

}

#[should_panic]

#[test]

fn deny_wraparound_default() {

let _five_large = Array::<f32, _>::default((3, 7, 29, 36760123, 823996703));

}

#[should_panic]

#[test]

fn deny_wraparound_from_shape_fn() {

let _five_large = Array::<f32, _>::from_shape_fn((3, 7, 29, 36760123, 823996703), |_| 0.);

}

#[should_panic]

#[test]

fn deny_wraparound_uninit() {

unsafe {

let _five_large = Array::<f32, _>::uninitialized((3, 7, 29, 36760123, 823996703));

}

}