bitbuffer/bitstream_reader_derive/tests/test.rs

use bitstream_reader::{BitBuffer, BitStream, LittleEndian};
use bitstream_reader_derive::Read;

#[derive(Read, PartialEq, Debug)]
struct TestStruct {
    foo: u8,
    str: String,
    #[size = 2]
    truncated: String,
    bar: u16,
    float: f32,
    #[size = 3]
    asd: u8,
    #[size_bits = 2]
    dynamic: u8,
    #[size = "asd"]
    previous_field: u8,
}

#[test]
fn test_read_struct() {
    let float: [u8; 4] = 12.5f32.to_bits().to_le_bytes();
    let bytes = vec![
        12,
        'h' as u8,
        'e' as u8,
        'l' as u8,
        'l' as u8,
        'o' as u8,
        0,
        'f' as u8,
        'o' as u8,
        'o' as u8,
        0,
        float[0],
        float[1],
        float[2],
        float[3],
        0b0101_0101,
        0b1010_1010,
    ];
    let buffer = BitBuffer::new(bytes, LittleEndian);
    let mut stream = BitStream::from(buffer);
    assert_eq!(
        TestStruct {
            foo: 12,
            str: "hello".to_owned(),
            truncated: "fo".to_owned(),
            bar: 'o' as u16,
            float: 12.5,
            asd: 0b101,
            dynamic: 0b10,
            previous_field: 0b1010_0,
        },
        stream.read().unwrap()
    );
}