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#[rustversion::since(1.61.0)]
mod msrv_1_61 {
mod smoke {
use crate::prelude::*;
#[test]
const fn test_struct() {
#[derive(Builder)]
#[builder(const)]
struct Sut {
#[builder(start_fn)]
x1: u32,
// There was a bug in `#[builder(field)]` `const` support, that
// this is testing for: https://github.com/elastio/bon/issues/290
#[builder(field = 11)]
x2: u32,
#[builder(finish_fn)]
x3: u32,
x4: u32,
x5: Option<u32>,
#[builder(default = x1 + 99)]
x6: u32,
#[builder(with = |a: u32, b: u32| a + b)]
x7: u32,
#[builder(with = |a: u32, b: u32| -> Result<_, ()> { Ok(a + b) })]
x8: Option<u32>,
#[builder(skip = 10)]
x9: u32,
//
// This doesn't work because Rust complains about this in setters that
// consume `self` and return a new instance of the builder:
// ```
// destructor of `builder::attr_const::test_struct::SutBuilder<S>`
// cannot be evaluated at compile-time
// ```
// x7: Vec<String>,
// x8: String,
}
const ACTUAL: Sut = Sut::builder(1).x4(2).x5(3).x7(4, 5).build(6);
#[allow(clippy::assertions_on_constants)]
{
assert!(ACTUAL.x1 == 1);
assert!(ACTUAL.x2 == 11);
assert!(ACTUAL.x3 == 6);
assert!(ACTUAL.x4 == 2);
assert!(matches!(ACTUAL.x5, Some(3)));
assert!(ACTUAL.x6 == 100);
assert!(ACTUAL.x7 == 9);
assert!(ACTUAL.x8.is_none());
assert!(ACTUAL.x9 == 10);
}
}
#[rustversion::since(1.83.0)]
#[test]
const fn test_struct_msrv_1_83() {
#[derive(Builder)]
#[builder(const)]
struct Sut {
#[builder(start_fn)]
#[allow(dead_code)]
x1: u32,
#[builder(field = 11)]
#[allow(dead_code)]
x2: u32,
}
impl<S: sut_builder::State> SutBuilder<S> {
const fn inc(&mut self) {
self.x1 += 1;
self.x2 += 1;
}
}
let mut builder = Sut::builder(1);
builder.inc();
builder.inc();
assert!(builder.x1 == 3);
assert!(builder.x2 == 13);
}
#[test]
const fn test_function() {
type Output = (u32, u32, u32, u32, Option<u32>, u32, u32, Option<u32>);
#[builder(const)]
const fn sut(
#[builder(start_fn)] x1: u32,
#[builder(field = 10)] x2: u32,
#[builder(finish_fn)] x3: u32,
x4: u32,
x5: Option<u32>,
#[builder(default = x1 + 99)] x6: u32,
#[builder(with = |a: u32, b: u32| a + b)] x7: u32,
#[builder(with = |a: u32, b: u32| -> Result<_, ()> { Ok(a + b) })] x8: Option<u32>,
) -> Output {
(x1, x2, x3, x4, x5, x6, x7, x8)
}
const ACTUAL: Output = sut(1).x4(2).x5(3).x7(4, 5).call(6);
#[allow(clippy::assertions_on_constants)]
{
assert!(ACTUAL.0 == 1);
assert!(ACTUAL.1 == 10);
assert!(ACTUAL.2 == 6);
assert!(ACTUAL.3 == 2);
assert!(matches!(ACTUAL.4, Some(3)));
assert!(ACTUAL.5 == 100);
assert!(ACTUAL.6 == 9);
assert!(ACTUAL.7.is_none());
}
}
#[test]
const fn test_method() {
type Output = (u32, u32, u32, u32, Option<u32>, u32, u32, Option<u32>);
struct Sut;
#[bon]
impl Sut {
#[builder(const)]
const fn sut(
#[builder(start_fn)] x1: u32,
#[builder(field = 10)] x2: u32,
#[builder(finish_fn)] x3: u32,
x4: u32,
x5: Option<u32>,
#[builder(default = x1 + 99)] x6: u32,
#[builder(with = |a: u32, b: u32| a + b)] x7: u32,
#[builder(with = |a: u32, b: u32| -> Result<_, ()> { Ok(a + b) })] x8: Option<
u32,
>,
) -> Output {
(x1, x2, x3, x4, x5, x6, x7, x8)
}
}
const ACTUAL: Output = Sut::sut(1).x4(2).x5(3).x7(4, 5).call(6);
#[allow(clippy::assertions_on_constants)]
{
assert!(ACTUAL.0 == 1);
assert!(ACTUAL.1 == 10);
assert!(ACTUAL.2 == 6);
assert!(ACTUAL.3 == 2);
assert!(matches!(ACTUAL.4, Some(3)));
assert!(ACTUAL.5 == 100);
assert!(ACTUAL.6 == 9);
assert!(ACTUAL.7.is_none());
}
}
}
// Tests for the following bug: https://github.com/elastio/bon/issues/287
mod visibility {
use crate::prelude::*;
#[test]
const fn test_struct() {
#[derive(Builder)]
#[builder(const)]
#[allow(unreachable_pub)]
pub struct Sut {
x1: u32,
}
const ACTUAL: Sut = Sut::builder().x1(1).build();
#[allow(clippy::assertions_on_constants)]
{
assert!(ACTUAL.x1 == 1);
}
}
#[test]
const fn test_function() {
#[builder(const)]
pub(crate) const fn sut(#[builder(getter)] _x: u32) {}
sut().x(1).call();
}
#[test]
const fn test_method() {
struct Sut;
#[bon]
impl Sut {
#[builder(const)]
pub(crate) const fn sut(#[builder(getter)] _x: u32) {}
}
Sut::sut().x(1).call();
}
}
}