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#![warn(clippy::result_unit_err)]
pub fn returns_unit_error() -> Result<u32, ()> {
Err(())
}
fn private_unit_errors() -> Result<String, ()> {
Err(())
}
pub trait HasUnitError {
fn get_that_error(&self) -> Result<bool, ()>;
fn get_this_one_too(&self) -> Result<bool, ()> {
Err(())
}
}
impl HasUnitError for () {
fn get_that_error(&self) -> Result<bool, ()> {
Ok(true)
}
}
trait PrivateUnitError {
fn no_problem(&self) -> Result<usize, ()>;
}
pub struct UnitErrorHolder;
impl UnitErrorHolder {
pub fn unit_error(&self) -> Result<usize, ()> {
Ok(0)
}
}
// https://github.com/rust-lang/rust-clippy/issues/6546
pub mod issue_6546 {
type ResInv<A, B> = Result<B, A>;
pub fn should_lint() -> ResInv<(), usize> {
Ok(0)
}
pub fn should_not_lint() -> ResInv<usize, ()> {
Ok(())
}
type MyRes<A, B> = Result<(A, B), Box<dyn std::error::Error>>;
pub fn should_not_lint2(x: i32) -> MyRes<i32, ()> {
Ok((x, ()))
}
}
fn main() {}
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