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array-construct.rs
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288 lines (247 loc) · 7.35 KB
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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::*;
use ndarray::arr3;
use ndarray::Zip;
#[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]
#[cfg(feature = "std")]
#[allow(deprecated)] // uninitialized
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());
println!("{:?}", five_large);
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);
}
#[test]
fn test_from_shape_empty_with_neg_stride() {
// Issue #998, negative strides for an axis where it doesn't matter.
let s = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];
let v = s[..12].to_vec();
let v_ptr = v.as_ptr();
let a = Array::from_shape_vec((2, 0, 2).strides((1, -4isize as usize, 2)), v).unwrap();
assert_eq!(a, arr3(&[[[0; 2]; 0]; 2]));
assert_eq!(a.as_ptr(), v_ptr);
}
#[test]
fn test_from_shape_with_neg_stride() {
// Issue #998, negative strides for an axis where it doesn't matter.
let s = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];
let v = s[..12].to_vec();
let v_ptr = v.as_ptr();
let a = Array::from_shape_vec((2, 1, 2).strides((1, -4isize as usize, 2)), v).unwrap();
assert_eq!(a, arr3(&[[[0, 2]],
[[1, 3]]]));
assert_eq!(a.as_ptr(), v_ptr);
}
#[test]
fn test_from_shape_2_2_2_with_neg_stride() {
// Issue #998, negative strides for an axis where it doesn't matter.
let s = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];
let v = s[..12].to_vec();
let v_ptr = v.as_ptr();
let a = Array::from_shape_vec((2, 2, 2).strides((1, -4isize as usize, 2)), v).unwrap();
assert_eq!(a, arr3(&[[[4, 6],
[0, 2]],
[[5, 7],
[1, 3]]]));
assert_eq!(a.as_ptr(), v_ptr.wrapping_add(4));
}
#[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]
#[allow(deprecated)] // uninitialized
fn deny_wraparound_uninitialized() {
unsafe {
let _five_large = Array::<f32, _>::uninitialized((3, 7, 29, 36760123, 823996703));
}
}
#[should_panic]
#[test]
fn deny_wraparound_uninit() {
let _five_large = Array::<f32, _>::uninit((3, 7, 29, 36760123, 823996703));
}
#[test]
fn maybe_uninit_1() {
use std::mem::MaybeUninit;
unsafe {
// Array
type Mat<D> = Array<f32, D>;
let mut a = Mat::uninit((10, 10));
a.mapv_inplace(|_| MaybeUninit::new(1.));
let a_init = a.assume_init();
assert_eq!(a_init, Array2::from_elem(a_init.dim(), 1.));
// ArcArray
type ArcMat<D> = ArcArray<f32, D>;
let mut a = ArcMat::uninit((10, 10));
a.mapv_inplace(|_| MaybeUninit::new(1.));
let a2 = a.clone();
let a_init = a.assume_init();
assert_eq!(a_init, Array2::from_elem(a_init.dim(), 1.));
// ArrayView
let av_init = a2.view().assume_init();
assert_eq!(av_init, Array2::from_elem(a_init.dim(), 1.));
// RawArrayViewMut
let mut a = Mat::uninit((10, 10));
let v = a.raw_view_mut();
Zip::from(v)
.for_each(|ptr| *(*ptr).as_mut_ptr() = 1.);
let u = a.raw_view_mut().assume_init();
Zip::from(u)
.for_each(|ptr| assert_eq!(*ptr, 1.));
}
}