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https://github.com/rust-lang/rust-clippy
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move ok_expect tests
This commit is contained in:
parent
3356d121df
commit
90b428e88d
4 changed files with 61 additions and 68 deletions
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@ -393,32 +393,6 @@ fn get_unwrap() {
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#[allow(similar_names)]
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fn main() {
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use std::io;
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let opt = Some(0);
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let _ = opt.unwrap();
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let res: Result<i32, ()> = Ok(0);
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let _ = res.unwrap();
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res.ok().expect("disaster!");
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// the following should not warn, since `expect` isn't implemented unless
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// the error type implements `Debug`
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let res2: Result<i32, MyError> = Ok(0);
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res2.ok().expect("oh noes!");
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let res3: Result<u32, MyErrorWithParam<u8>>= Ok(0);
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res3.ok().expect("whoof");
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let res4: Result<u32, io::Error> = Ok(0);
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res4.ok().expect("argh");
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let res5: io::Result<u32> = Ok(0);
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res5.ok().expect("oops");
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let res6: Result<u32, &str> = Ok(0);
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res6.ok().expect("meh");
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}
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struct MyError(()); // doesn't implement Debug
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#[derive(Debug)]
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struct MyErrorWithParam<T> {
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x: T
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}
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@ -500,50 +500,10 @@ error: called `.get_mut().unwrap()` on a VecDeque. Using `[]` is more clear and
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&mut some_vecdeque[0]`
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error: used unwrap() on an Option value. If you don't want to handle the None case gracefully, consider using expect() to provide a better panic message
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--> $DIR/methods.rs:399:13
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--> $DIR/methods.rs:397:13
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399 | let _ = opt.unwrap();
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397 | let _ = opt.unwrap();
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| ^^^^^^^^^^^^
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= note: `-D option-unwrap-used` implied by `-D warnings`
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error: used unwrap() on a Result value. If you don't want to handle the Err case gracefully, consider using expect() to provide a better panic message
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--> $DIR/methods.rs:402:13
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402 | let _ = res.unwrap();
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| ^^^^^^^^^^^^
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= note: `-D result-unwrap-used` implied by `-D warnings`
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/methods.rs:404:5
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404 | res.ok().expect("disaster!");
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D ok-expect` implied by `-D warnings`
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/methods.rs:410:5
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410 | res3.ok().expect("whoof");
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/methods.rs:412:5
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412 | res4.ok().expect("argh");
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/methods.rs:414:5
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414 | res5.ok().expect("oops");
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/methods.rs:416:5
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416 | res6.ok().expect("meh");
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| ^^^^^^^^^^^^^^^^^^^^^^^
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27
tests/ui/ok_expect.rs
Normal file
27
tests/ui/ok_expect.rs
Normal file
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@ -0,0 +1,27 @@
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use std::io;
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struct MyError(()); // doesn't implement Debug
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#[derive(Debug)]
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struct MyErrorWithParam<T> {
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x: T
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}
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fn main() {
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let res: Result<i32, ()> = Ok(0);
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let _ = res.unwrap();
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res.ok().expect("disaster!");
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// the following should not warn, since `expect` isn't implemented unless
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// the error type implements `Debug`
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let res2: Result<i32, MyError> = Ok(0);
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res2.ok().expect("oh noes!");
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let res3: Result<u32, MyErrorWithParam<u8>>= Ok(0);
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res3.ok().expect("whoof");
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let res4: Result<u32, io::Error> = Ok(0);
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res4.ok().expect("argh");
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let res5: io::Result<u32> = Ok(0);
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res5.ok().expect("oops");
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let res6: Result<u32, &str> = Ok(0);
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res6.ok().expect("meh");
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}
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32
tests/ui/ok_expect.stderr
Normal file
32
tests/ui/ok_expect.stderr
Normal file
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@ -0,0 +1,32 @@
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/ok_expect.rs:14:5
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14 | res.ok().expect("disaster!");
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: `-D ok-expect` implied by `-D warnings`
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/ok_expect.rs:20:5
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20 | res3.ok().expect("whoof");
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/ok_expect.rs:22:5
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22 | res4.ok().expect("argh");
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/ok_expect.rs:24:5
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24 | res5.ok().expect("oops");
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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error: called `ok().expect()` on a Result value. You can call `expect` directly on the `Result`
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--> $DIR/ok_expect.rs:26:5
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26 | res6.ok().expect("meh");
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| ^^^^^^^^^^^^^^^^^^^^^^^
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