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use super::*;
use crate::Flags;
#[test]
fn cases() {
case(
TestFlags::empty(),
&[
(TestFlags::A, 1),
(TestFlags::all(), 1 | 1 << 1 | 1 << 2),
(TestFlags::empty(), 0),
(TestFlags::from_bits_retain(1 << 3), 1 << 3),
],
TestFlags::union,
);
case(
TestFlags::A | TestFlags::C,
&[
(TestFlags::A | TestFlags::B, 1 | 1 << 1 | 1 << 2),
(TestFlags::A, 1 | 1 << 2),
],
TestFlags::union,
);
}
#[track_caller]
fn case<T: Flags + std::fmt::Debug + std::ops::BitOr<Output = T> + std::ops::BitOrAssign + Copy>(
value: T,
inputs: &[(T, T::Bits)],
mut inherent: impl FnMut(T, T) -> T,
) where
T::Bits: std::fmt::Debug + PartialEq + Copy,
{
for (input, expected) in inputs {
assert_eq!(
*expected,
inherent(value, *input).bits(),
"{:?}.union({:?})",
value,
input
);
assert_eq!(
*expected,
Flags::union(value, *input).bits(),
"Flags::union({:?}, {:?})",
value,
input
);
assert_eq!(
*expected,
(value | *input).bits(),
"{:?} | {:?}",
value,
input
);
assert_eq!(
*expected,
{
let mut value = value;
value |= *input;
value
}
.bits(),
"{:?} |= {:?}",
value,
input,
);
}
}