helper 4.0.0

A library provided some useful proc macros for Rust.
Documentation 
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use helper::*;

#[test]
fn test_u8_conversion() {
    let x = 42i32;
    let y = u8!(x);
    assert_eq!(y, 42u8);
}

#[test]
fn test_u16_conversion() {
    let x = 42i32;
    let y = u16!(x);
    assert_eq!(y, 42u16);
}

#[test]
fn test_u32_conversion() {
    let x = 42i64;
    let y = u32!(x);
    assert_eq!(y, 42u32);
}

#[test]
fn test_u64_conversion() {
    let x = 42i32;
    let y = u64!(x);
    assert_eq!(y, 42u64);
}

#[test]
fn test_u128_conversion() {
    let x = 42i32;
    let y = u128!(x);
    assert_eq!(y, 42u128);
}

#[test]
fn test_usize_conversion() {
    let x = 42i32;
    let y = usize!(x);
    assert_eq!(y, 42usize);
}

#[test]
fn test_i8_conversion() {
    let x = 42i32;
    let y = i8!(x);
    assert_eq!(y, 42i8);
}

#[test]
fn test_i16_conversion() {
    let x = 42i32;
    let y = i16!(x);
    assert_eq!(y, 42i16);
}

#[test]
fn test_i32_conversion() {
    let x = 42i64;
    let y = i32!(x);
    assert_eq!(y, 42i32);
}

#[test]
fn test_i64_conversion() {
    let x = 42i32;
    let y = i64!(x);
    assert_eq!(y, 42i64);
}

#[test]
fn test_i128_conversion() {
    let x = 42i32;
    let y = i128!(x);
    assert_eq!(y, 42i128);
}

#[test]
fn test_isize_conversion() {
    let x = 42i32;
    let y = isize!(x);
    assert_eq!(y, 42isize);
}

#[test]
fn test_f32_conversion() {
    let x = 3.14f64;
    let y = f32!(x);
    assert!((y - 3.14f32).abs() < f32::EPSILON);
}

#[test]
fn test_f64_conversion() {
    let x = 3.14f32;
    let y = f64!(x);
    // Use a larger tolerance for f32 to f64 conversion
    assert!((y - 3.14f64).abs() < 0.0001);
}

#[test]
fn test_char_conversion() {
    let x = 65u8;
    let y = char!(x);
    assert_eq!(y, 'A');
}

#[test]
fn test_complex_expressions() {
    let x = 10i32;
    let y = 20i32;

    // Test with complex expressions
    let result = u64!(x + y * 2);
    assert_eq!(result, 50u64);

    let result = f32!(x as f64 / 3.0);
    assert!((result - (10.0 / 3.0) as f32).abs() < f32::EPSILON);
}

#[test]
fn test_chained_conversions() {
    let x = 42i32;
    let y = f64!(i64!(u32!(x)));
    assert!((y - 42.0f64).abs() < f64::EPSILON);
}