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//! Unit tests for the `array` module.
#![cfg(test)]
use tap::conv::TryConv;
use crate::{
prelude::*,
view::BitViewSized,
};
#[test]
fn create_arrays() {
macro_rules! make {
($($elts:literal),+ $(,)?) => { $(
let _ = BitArray::<LocalBits, [u8; $elts]>::ZERO;
let _ = BitArray::<LocalBits, [u16; $elts]>::ZERO;
let _ = BitArray::<LocalBits, [u32; $elts]>::ZERO;
let _ = BitArray::<LocalBits, [usize; $elts]>::ZERO;
#[cfg(target_pointer_width = "64")] {
let _ = BitArray::<LocalBits, [u64; $elts]>::ZERO;
}
)+ };
}
make!(
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32
);
}
#[test]
fn wrap_unwrap() {
let data: [u8; 15] = *b"Saluton, mondo!";
let bits = BitArray::<LocalBits, _>::new(data);
assert_eq!(bits.into_inner(), data);
}
#[test]
fn views() {
let mut arr = bitarr![Msb0, u8; 0; 20];
let s: &mut [u8] = arr.as_mut_raw_slice();
s[0] = !0u8;
let s: &[u8] = arr.as_raw_slice();
assert_eq!(s, &[!0, 0, 0]);
let a: &mut [u8; 3] = arr.as_mut_buffer();
*a = [!0u8; 3];
let a: &[u8; 3] = arr.as_buffer();
assert_eq!(*a, [!0u8; 3]);
}
#[test]
fn convert() {
let arr: BitArray<Lsb0, _> = 2u8.into();
assert!(arr.any());
let bits = bits![Msb0, u8; 1; 128];
let arr = bits.try_conv::<BitArray<Msb0, [u8; 16]>>().unwrap();
assert!(arr.all());
let bits = bits![Lsb0, u32; 0; 64];
let arr = bits.try_conv::<&BitArray<Lsb0, [u32; 2]>>().unwrap();
assert!(arr.not_any());
let bits = bits![mut Msb0, u16; 0; 64];
let arr = bits.try_conv::<&mut BitArray<Msb0, [u16; 4]>>().unwrap();
assert!(arr.not_any());
let bits = bits![mut LocalBits, usize; 0; 4];
assert!((&*bits).try_conv::<&BitArray<LocalBits, usize>>().is_err());
assert!(bits.try_conv::<&mut BitArray<LocalBits, usize>>().is_err());
}
#[test]
#[allow(deprecated)]
fn iter() {
let mut iter = bitarr![0, 0, 0, 1, 1, 1, 0, 0, 0].into_iter();
let width = <[usize; 1] as BitViewSized>::BITS;
let slice = iter.as_slice();
let iter_slice = iter.as_bitslice();
assert_eq!(slice, iter_slice);
assert_eq!(iter_slice.count_ones(), 3);
assert_eq!(iter_slice.len(), width);
iter.as_mut_bitslice().set(0, true);
iter.as_mut_slice().set(1, true);
assert_eq!(iter.as_bitslice().count_ones(), 5);
assert!(iter.next().unwrap());
// get the last bit of the literal
assert!(!iter.nth_back(width - 9).unwrap());
// advance to the first `0` bit after the `1`s in the literal
assert!(!iter.nth_back(1).unwrap());
assert!(!iter.nth(1).unwrap());
assert_eq!(iter.as_bitslice(), bits![1; 3]);
assert!(iter.next().unwrap());
assert!(iter.clone().last().unwrap());
assert_eq!(iter.size_hint(), (2, Some(2)));
assert_eq!(iter.clone().count(), 2);
// Reference iterators
assert!((&bitarr![0]).into_iter().all(|b| !*b));
assert!((&bitarr![1]).into_iter().any(|b| *b));
let mut arr = bitarr![0];
assert!(arr.not_any());
for mut bit in &mut arr {
*bit = !*bit;
}
assert!(arr.all(), "{:?}", arr);
}
#[test]
fn ops() {
let a = bitarr![0, 0, 1, 1];
let b = bitarr![0, 1, 0, 1];
let c = a & b;
assert_eq!(c, bitarr![0, 0, 0, 1]);
let d = a | b;
assert_eq!(d, bitarr![0, 1, 1, 1]);
let e = a ^ b;
assert_eq!(e, bitarr![0, 1, 1, 0]);
let mut f = !e;
// Array literals are zero-extended to fill their `V` type, and do not
// store a length counter.
assert_eq!(f[.. 4], bitarr![1, 0, 0, 1][.. 4]);
let _: &BitSlice = &*a;
let _: &mut BitSlice = &mut *f;
}
#[test]
fn traits() {
use core::{
borrow::{
Borrow,
BorrowMut,
},
cmp::Ordering,
};
let mut a = bitarr![0, 1, 0, 1];
let bitspan = a.as_bitslice().as_bitspan();
let bits: &BitSlice = a.borrow();
assert_eq!(bits.as_bitspan(), bitspan);
let bits_mut: &mut BitSlice = a.borrow_mut();
assert_eq!(bits_mut.as_bitspan(), bitspan);
let bits: &BitSlice = a.as_ref();
assert_eq!(bits.as_bitspan(), bitspan);
let bits_mut: &mut BitSlice = a.as_mut();
assert_eq!(bits_mut.as_bitspan(), bitspan);
let a = bitarr![0, 1];
let b = bitarr![0, 0];
assert!(a > b);
assert_eq!(a.cmp(&b), Ordering::Greater);
let a: BitArray = BitArray::default();
assert!(a.not_any());
}
#[test]
#[cfg(feature = "alloc")]
fn format() {
#[cfg(not(feature = "std"))]
use alloc::format;
let a = bitarr![0; 20];
assert_eq!(format!("{}", a), format!("{}", a.as_bitslice()));
assert_eq!(format!("{:b}", a), format!("{:b}", a.as_bitslice()));
assert_eq!(format!("{:o}", a), format!("{:o}", a.as_bitslice()));
assert_eq!(format!("{:x}", a), format!("{:x}", a.as_bitslice()));
assert_eq!(format!("{:X}", a), format!("{:X}", a.as_bitslice()));
let text = format!("{:?}", bitarr![Msb0, u8; 0, 1, 0, 0]);
assert!(
text.starts_with("BitArray<bitvec::order::Msb0, u8> { addr: 0x"),
"{}",
text
);
assert!(
text.ends_with(", head: 000, bits: 8 } [01000000]"),
"{}",
text
);
}