arranged 0.1.2

Statically bounds-checked (machine-word-abstracting? TBD) ranged types as zero or low-runtime overhead abstractions providing safe (no unintentional overflow) arithmetic.
Documentation 
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use super::*;
use assert2::assert;

type Range<const START: u8, const END: u8> = RiU8<START, END>;

#[test]
const fn const_range_contains_in_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    const ANNOY_NEIGHBORS: u8 = 9;
    const EXPECTED: bool = true;

    // When
    const RESULT: bool = Sut::contains(&ANNOY_NEIGHBORS);

    // Then
    // Uncomment below and set `assert` to failing condition to observe compile-time impact
    // const _ASSERT: () = std::assert!(RESULT == EXPECTED);
    std::assert!(RESULT == EXPECTED);
}

#[test]
const fn const_range_contains_min_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    const MINIMUM: u8 = 0;
    const EXPECTED: bool = true;

    // When
    const RESULT: bool = Sut::contains(&MINIMUM);

    // Then
    // Uncomment below and set `assert` to failing condition to observe compile-time impact
    // const _ASSERT: () = std::assert!(RESULT == EXPECTED);
    std::assert!(RESULT == EXPECTED);
}

#[test]
const fn const_range_contains_max_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    const MAXIMUM: u8 = 11;
    const EXPECTED: bool = true;

    // When
    const RESULT: bool = Sut::contains(&MAXIMUM);

    // Then
    // Uncomment below and set `assert` to failing condition to observe compile-time impact
    // const _ASSERT: () = std::assert!(RESULT == EXPECTED);
    std::assert!(RESULT == EXPECTED);
}

#[test]
const fn const_range_does_not_contain_low_out_of_bounds_value() {
    // Given
    const GUESS_A_NUMBER_MIN: u8 = 1;
    const GUESS_A_NUMBER_MAX: u8 = 10;

    type Sut = Range<GUESS_A_NUMBER_MIN, GUESS_A_NUMBER_MAX>;

    const BEYOND_MIN: u8 = 0;
    const EXPECTED: bool = false;

    // When
    const RESULT: bool = Sut::contains(&BEYOND_MIN);

    // Then
    // Uncomment below and set `assert` to failing condition to observe compile-time impact
    // const _ASSERT: () = std::assert!(RESULT == EXPECTED);
    std::assert!(RESULT == EXPECTED);
}

#[test]
const fn const_range_does_not_contain_high_out_of_bounds_value() {
    // Given
    const GUESS_A_NUMBER_MIN: u8 = 1;
    const GUESS_A_NUMBER_MAX: u8 = 10;

    type Sut = Range<GUESS_A_NUMBER_MIN, GUESS_A_NUMBER_MAX>;

    const BEYOND_MAX: u8 = 11;
    const EXPECTED: bool = false;

    // When
    const RESULT: bool = Sut::contains(&BEYOND_MAX);

    // Then
    // Uncomment below and set `assert` to failing condition to observe compile-time impact
    // const _ASSERT: () = std::assert!(RESULT == EXPECTED);
    std::assert!(RESULT == EXPECTED);
}

#[test]
fn range_contains_in_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    let annoy_neighbors: u8 = 9;
    let expected = true;

    // When
    let result = Sut::contains(&annoy_neighbors);

    // Then
    assert!(result == expected);
}

#[test]
fn range_contains_min_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    let minimum: u8 = 0;
    let expected = true;

    // When
    let result = Sut::contains(&minimum);

    // Then
    assert!(result == expected);
}

#[test]
fn range_contains_max_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    let maximum: u8 = 11;
    let expected = true;

    // When
    let result = Sut::contains(&maximum);

    // Then
    assert!(result == expected);
}

#[test]
fn range_does_not_contain_high_out_of_bounds_value() {
    // Given
    const MIN_VOLUME: u8 = 0;
    const MAX_VOLUME: u8 = 11;

    type Sut = Range<MIN_VOLUME, MAX_VOLUME>;

    let beyond_max: u8 = 12;
    let expected = false;

    // When
    let result = Sut::contains(&beyond_max);

    // Then
    assert!(result == expected);
}