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use crate::{Builder, Uuid};
impl Uuid {
/// Creates a custom UUID comprised almost entirely of user-supplied bytes.
///
/// This will inject the UUID Version at 4 bits starting at the 48th bit
/// and the Variant into 2 bits 64th bit. Any existing bits in the user-supplied bytes
/// at those locations will be overridden.
///
/// Note that usage of this method requires the `v8` feature of this crate
/// to be enabled.
///
/// # Examples
///
/// Basic usage:
///
/// ```
/// # use uuid::{Uuid, Version};
/// let buf: [u8; 16] = *b"abcdefghijklmnop";
/// let uuid = Uuid::new_v8(buf);
///
/// assert_eq!(Some(Version::Custom), uuid.get_version());
/// ```
///
/// # References
///
/// * [Version 8 UUIDs in Draft RFC: New UUID Formats, Version 4](https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-04#section-5.3)
pub fn new_v8(buf: [u8; 16]) -> Uuid {
Builder::from_custom_bytes(buf).into_uuid()
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{Variant, Version};
use std::string::ToString;
#[cfg(target_arch = "wasm32")]
use wasm_bindgen_test::*;
#[test]
#[cfg_attr(target_arch = "wasm32", wasm_bindgen_test)]
fn test_new() {
let buf: [u8; 16] = [
0xf, 0xe, 0xd, 0xc, 0xb, 0xa, 0x9, 0x8, 0x7, 0x6, 0x5, 0x4, 0x3, 0x2, 0x1, 0x0,
];
let uuid = Uuid::new_v8(buf);
assert_eq!(uuid.get_version(), Some(Version::Custom));
assert_eq!(uuid.get_variant(), Variant::RFC4122);
assert_eq!(uuid.get_version_num(), 8);
assert_eq!(
uuid.hyphenated().to_string(),
"0f0e0d0c-0b0a-8908-8706-050403020100"
);
}
}
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