| #![warn(clippy::result_unit_err)] |
| |
| pub fn returns_unit_error() -> Result<u32, ()> { |
| //~^ ERROR: this returns a `Result<_, ()>` |
| Err(()) |
| } |
| |
| fn private_unit_errors() -> Result<String, ()> { |
| Err(()) |
| } |
| |
| pub trait HasUnitError { |
| fn get_that_error(&self) -> Result<bool, ()>; |
| //~^ ERROR: this returns a `Result<_, ()>` |
| |
| fn get_this_one_too(&self) -> Result<bool, ()> { |
| //~^ ERROR: this returns a `Result<_, ()>` |
| 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, ()> { |
| //~^ ERROR: this returns a `Result<_, ()>` |
| 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> { |
| //~^ ERROR: this returns a `Result<_, ()>` |
| 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() {} |