80 lines
1.8 KiB
Rust
80 lines
1.8 KiB
Rust
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use super::*;
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use crate::Flags;
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#[test]
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fn cases() {
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case(
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TestFlags::empty(),
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&[(TestFlags::empty(), 0), (TestFlags::all(), 0)],
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TestFlags::intersection,
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);
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case(
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TestFlags::all(),
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&[
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(TestFlags::all(), 1 | 1 << 1 | 1 << 2),
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(TestFlags::A, 1),
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(TestFlags::from_bits_retain(1 << 3), 0),
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],
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TestFlags::intersection,
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);
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case(
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TestFlags::from_bits_retain(1 << 3),
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&[(TestFlags::from_bits_retain(1 << 3), 1 << 3)],
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TestFlags::intersection,
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);
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case(
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TestOverlapping::AB,
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&[(TestOverlapping::BC, 1 << 1)],
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TestOverlapping::intersection,
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);
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}
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#[track_caller]
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fn case<T: Flags + std::fmt::Debug + std::ops::BitAnd<Output = T> + std::ops::BitAndAssign + Copy>(
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value: T,
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inputs: &[(T, T::Bits)],
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mut inherent: impl FnMut(T, T) -> T,
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) where
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T::Bits: std::fmt::Debug + PartialEq + Copy,
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{
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for (input, expected) in inputs {
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assert_eq!(
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*expected,
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inherent(value, *input).bits(),
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"{:?}.intersection({:?})",
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value,
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input
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);
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assert_eq!(
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*expected,
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Flags::intersection(value, *input).bits(),
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"Flags::intersection({:?}, {:?})",
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value,
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input
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);
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assert_eq!(
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*expected,
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(value & *input).bits(),
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"{:?} & {:?}",
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value,
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input
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);
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assert_eq!(
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*expected,
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{
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let mut value = value;
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value &= *input;
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value
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}
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.bits(),
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"{:?} &= {:?}",
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value,
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input,
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);
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}
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}
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