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920ad73295
error: type parameter goes unused in function definition
--> tests/test_from.rs:51:15
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51 | fn assert_impl<T: From<io::Error>>() {}
| ^^^^^^^^^^^^^^^^^^^^
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= help: consider removing the parameter
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_type_parameters
= note: `-D clippy::extra-unused-type-parameters` implied by `-D clippy::all`
64 lines
1.2 KiB
Rust
64 lines
1.2 KiB
Rust
#![allow(clippy::extra_unused_type_parameters)]
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use std::io;
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use thiserror::Error;
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#[derive(Error, Debug)]
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#[error("...")]
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pub struct ErrorStruct {
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#[from]
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source: io::Error,
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}
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#[derive(Error, Debug)]
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#[error("...")]
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pub struct ErrorStructOptional {
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#[from]
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source: Option<io::Error>,
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}
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#[derive(Error, Debug)]
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#[error("...")]
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pub struct ErrorTuple(#[from] io::Error);
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#[derive(Error, Debug)]
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#[error("...")]
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pub struct ErrorTupleOptional(#[from] Option<io::Error>);
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#[derive(Error, Debug)]
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#[error("...")]
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pub enum ErrorEnum {
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Test {
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#[from]
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source: io::Error,
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},
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}
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#[derive(Error, Debug)]
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#[error("...")]
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pub enum ErrorEnumOptional {
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Test {
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#[from]
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source: Option<io::Error>,
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},
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}
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#[derive(Error, Debug)]
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#[error("...")]
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pub enum Many {
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Any(#[from] anyhow::Error),
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Io(#[from] io::Error),
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}
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fn assert_impl<T: From<io::Error>>() {}
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#[test]
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fn test_from() {
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assert_impl::<ErrorStruct>();
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assert_impl::<ErrorStructOptional>();
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assert_impl::<ErrorTuple>();
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assert_impl::<ErrorTupleOptional>();
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assert_impl::<ErrorEnum>();
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assert_impl::<ErrorEnumOptional>();
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assert_impl::<Many>();
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}
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