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UI test cleanup: Extract lint from methods.rs test

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Philipp Hansch 2019-01-02 07:23:00 +01:00
parent 85ba5f0f17
commit eaaee23847
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GPG key ID: B6FA06A6E0E2665B
5 changed files with 123 additions and 106 deletions
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6
tests/auxiliary/option_helpers.rs Normal file
View file

@ -0,0 +1,6 @@
/// Utility macro to test linting behavior in `option_methods()`
/// The lints included in `option_methods()` should not lint if the call to map is partially
/// within a macro
macro_rules! opt_map {
($opt:expr, $map:expr) => {($opt).map($map)};
}

32
tests/ui/methods.rs
View file

@ -31,6 +31,8 @@ use std::iter::FromIterator;
use std::rc::{self, Rc};
use std::sync::{self, Arc};
include!("../auxiliary/option_helpers.rs");
pub struct T;
impl T {
@ -101,13 +103,6 @@ impl Mul<T> for T {
fn mul(self, other: T) -> T { self } // no error, obviously
}
/// Utility macro to test linting behavior in `option_methods()`
/// The lints included in `option_methods()` should not lint if the call to map is partially
/// within a macro
macro_rules! opt_map {
($opt:expr, $map:expr) => {($opt).map($map)};
}
/// Checks implementation of the following lints:
/// * `OPTION_MAP_UNWRAP_OR`
/// * `OPTION_MAP_UNWRAP_OR_ELSE`
@ -169,29 +164,6 @@ fn option_methods() {
);
}
/// Checks implementation of the following lints:
/// * `RESULT_MAP_UNWRAP_OR_ELSE`
fn result_methods() {
let res: Result<i32, ()> = Ok(1);
// Check RESULT_MAP_UNWRAP_OR_ELSE
// single line case
let _ = res.map(|x| x + 1)
.unwrap_or_else(|e| 0); // should lint even though this call is on a separate line
// multi line cases
let _ = res.map(|x| {
x + 1
}
).unwrap_or_else(|e| 0);
let _ = res.map(|x| x + 1)
.unwrap_or_else(|e|
0
);
// macro case
let _ = opt_map!(res, |x| x + 1).unwrap_or_else(|e| 0); // should not lint
}
/// Struct to generate false positives for things with .iter()
#[derive(Copy, Clone)]
struct HasIter;

120
tests/ui/methods.stderr
View file

@ -1,5 +1,5 @@
error: defining a method called `add` on this type; consider implementing the `std::ops::Add` trait or choosing a less ambiguous name
--> $DIR/methods.rs:37:5
--> $DIR/methods.rs:39:5
|
LL | pub fn add(self, other: T) -> T { self }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -7,7 +7,7 @@ LL | pub fn add(self, other: T) -> T { self }
= note: `-D clippy::should-implement-trait` implied by `-D warnings`
error: methods called `into_*` usually take self by value; consider choosing a less ambiguous name
--> $DIR/methods.rs:48:17
--> $DIR/methods.rs:50:17
|
LL | fn into_u16(&self) -> u16 { 0 }
| ^^^^^
@ -15,19 +15,19 @@ LL | fn into_u16(&self) -> u16 { 0 }
= note: `-D clippy::wrong-self-convention` implied by `-D warnings`
error: methods called `to_*` usually take self by reference; consider choosing a less ambiguous name
--> $DIR/methods.rs:50:21
--> $DIR/methods.rs:52:21
|
LL | fn to_something(self) -> u32 { 0 }
| ^^^^
error: methods called `new` usually take no self; consider choosing a less ambiguous name
--> $DIR/methods.rs:52:12
--> $DIR/methods.rs:54:12
|
LL | fn new(self) -> Self { unimplemented!(); }
| ^^^^
error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
--> $DIR/methods.rs:120:13
--> $DIR/methods.rs:115:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
@ -39,7 +39,7 @@ LL | | .unwrap_or(0); // should lint even though this call is on
= note: replace `map(|x| x + 1).unwrap_or(0)` with `map_or(0, |x| x + 1)`
error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
--> $DIR/methods.rs:124:13
--> $DIR/methods.rs:119:13
|
LL | let _ = opt.map(|x| {
| _____________^
@ -49,7 +49,7 @@ LL | | ).unwrap_or(0);
| |____________________________^
error: called `map(f).unwrap_or(a)` on an Option value. This can be done more directly by calling `map_or(a, f)` instead
--> $DIR/methods.rs:128:13
--> $DIR/methods.rs:123:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
@ -59,7 +59,7 @@ LL | | });
| |__________________^
error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:133:13
--> $DIR/methods.rs:128:13
|
LL | let _ = opt.map(|x| Some(x + 1)).unwrap_or(None);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -67,7 +67,7 @@ LL | let _ = opt.map(|x| Some(x + 1)).unwrap_or(None);
= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:135:13
--> $DIR/methods.rs:130:13
|
LL | let _ = opt.map(|x| {
| _____________^
@ -77,7 +77,7 @@ LL | | ).unwrap_or(None);
| |_____________________^
error: called `map(f).unwrap_or(None)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:139:13
--> $DIR/methods.rs:134:13
|
LL | let _ = opt
| _____________^
@ -88,7 +88,7 @@ LL | | .unwrap_or(None);
= note: replace `map(|x| Some(x + 1)).unwrap_or(None)` with `and_then(|x| Some(x + 1))`
error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:147:13
--> $DIR/methods.rs:142:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
@ -100,7 +100,7 @@ LL | | .unwrap_or_else(|| 0); // should lint even though this cal
= note: replace `map(|x| x + 1).unwrap_or_else(|| 0)` with `map_or_else(|| 0, |x| x + 1)`
error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:151:13
--> $DIR/methods.rs:146:13
|
LL | let _ = opt.map(|x| {
| _____________^
@ -110,7 +110,7 @@ LL | | ).unwrap_or_else(|| 0);
| |____________________________________^
error: called `map(f).unwrap_or_else(g)` on an Option value. This can be done more directly by calling `map_or_else(g, f)` instead
--> $DIR/methods.rs:155:13
--> $DIR/methods.rs:150:13
|
LL | let _ = opt.map(|x| x + 1)
| _____________^
@ -120,7 +120,7 @@ LL | | );
| |_________________^
error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:164:13
--> $DIR/methods.rs:159:13
|
LL | let _ = opt.map_or(None, |x| Some(x + 1));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try using and_then instead: `opt.and_then(|x| Some(x + 1))`
@ -128,7 +128,7 @@ LL | let _ = opt.map_or(None, |x| Some(x + 1));
= note: `-D clippy::option-map-or-none` implied by `-D warnings`
error: called `map_or(None, f)` on an Option value. This can be done more directly by calling `and_then(f)` instead
--> $DIR/methods.rs:166:13
--> $DIR/methods.rs:161:13
|
LL | let _ = opt.map_or(None, |x| {
| _____________^
@ -143,40 +143,8 @@ LL | Some(x + 1)
LL | });
|
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/methods.rs:179:13
|
LL | let _ = res.map(|x| x + 1)
| _____________^
LL | |
LL | | .unwrap_or_else(|e| 0); // should lint even though this call is on a separate line
| |_____________________________________^
|
= note: `-D clippy::result-map-unwrap-or-else` implied by `-D warnings`
= note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `ok().map_or_else(|e| 0, |x| x + 1)`
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/methods.rs:183:13
|
LL | let _ = res.map(|x| {
| _____________^
LL | | x + 1
LL | | }
LL | | ).unwrap_or_else(|e| 0);
| |_____________________________________^
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/methods.rs:187:13
|
LL | let _ = res.map(|x| x + 1)
| _____________^
LL | | .unwrap_or_else(|e|
LL | | 0
LL | | );
| |_________________^
error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
--> $DIR/methods.rs:250:13
--> $DIR/methods.rs:222:13
|
LL | let _ = v.iter().filter(|&x| *x < 0).next();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -185,7 +153,7 @@ LL | let _ = v.iter().filter(|&x| *x < 0).next();
= note: replace `filter(|&x| *x < 0).next()` with `find(|&x| *x < 0)`
error: called `filter(p).next()` on an `Iterator`. This is more succinctly expressed by calling `.find(p)` instead.
--> $DIR/methods.rs:253:13
--> $DIR/methods.rs:225:13
|
LL | let _ = v.iter().filter(|&x| {
| _____________^
@ -195,7 +163,7 @@ LL | | ).next();
| |___________________________^
error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:268:13
--> $DIR/methods.rs:240:13
|
LL | let _ = v.iter().find(|&x| *x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -204,7 +172,7 @@ LL | let _ = v.iter().find(|&x| *x < 0).is_some();
= note: replace `find(|&x| *x < 0).is_some()` with `any(|&x| *x < 0)`
error: called `is_some()` after searching an `Iterator` with find. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:271:13
--> $DIR/methods.rs:243:13
|
LL | let _ = v.iter().find(|&x| {
| _____________^
@ -214,7 +182,7 @@ LL | | ).is_some();
| |______________________________^
error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:277:13
--> $DIR/methods.rs:249:13
|
LL | let _ = v.iter().position(|&x| x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -222,7 +190,7 @@ LL | let _ = v.iter().position(|&x| x < 0).is_some();
= note: replace `position(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
error: called `is_some()` after searching an `Iterator` with position. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:280:13
--> $DIR/methods.rs:252:13
|
LL | let _ = v.iter().position(|&x| {
| _____________^
@ -232,7 +200,7 @@ LL | | ).is_some();
| |______________________________^
error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:286:13
--> $DIR/methods.rs:258:13
|
LL | let _ = v.iter().rposition(|&x| x < 0).is_some();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -240,7 +208,7 @@ LL | let _ = v.iter().rposition(|&x| x < 0).is_some();
= note: replace `rposition(|&x| x < 0).is_some()` with `any(|&x| x < 0)`
error: called `is_some()` after searching an `Iterator` with rposition. This is more succinctly expressed by calling `any()`.
--> $DIR/methods.rs:289:13
--> $DIR/methods.rs:261:13
|
LL | let _ = v.iter().rposition(|&x| {
| _____________^
@ -250,7 +218,7 @@ LL | | ).is_some();
| |______________________________^
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:324:22
--> $DIR/methods.rs:296:22
|
LL | with_constructor.unwrap_or(make());
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(make)`
@ -258,73 +226,73 @@ LL | with_constructor.unwrap_or(make());
= note: `-D clippy::or-fun-call` implied by `-D warnings`
error: use of `unwrap_or` followed by a call to `new`
--> $DIR/methods.rs:327:5
--> $DIR/methods.rs:299:5
|
LL | with_new.unwrap_or(Vec::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_new.unwrap_or_default()`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:330:21
--> $DIR/methods.rs:302:21
|
LL | with_const_args.unwrap_or(Vec::with_capacity(12));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Vec::with_capacity(12))`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:333:14
--> $DIR/methods.rs:305:14
|
LL | with_err.unwrap_or(make());
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| make())`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:336:19
--> $DIR/methods.rs:308:19
|
LL | with_err_args.unwrap_or(Vec::with_capacity(12));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|_| Vec::with_capacity(12))`
error: use of `unwrap_or` followed by a call to `default`
--> $DIR/methods.rs:339:5
--> $DIR/methods.rs:311:5
|
LL | with_default_trait.unwrap_or(Default::default());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_trait.unwrap_or_default()`
error: use of `unwrap_or` followed by a call to `default`
--> $DIR/methods.rs:342:5
--> $DIR/methods.rs:314:5
|
LL | with_default_type.unwrap_or(u64::default());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `with_default_type.unwrap_or_default()`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:345:14
--> $DIR/methods.rs:317:14
|
LL | with_vec.unwrap_or(vec![]);
| ^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| vec![])`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:350:21
--> $DIR/methods.rs:322:21
|
LL | without_default.unwrap_or(Foo::new());
| ^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(Foo::new)`
error: use of `or_insert` followed by a function call
--> $DIR/methods.rs:353:19
--> $DIR/methods.rs:325:19
|
LL | map.entry(42).or_insert(String::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
error: use of `or_insert` followed by a function call
--> $DIR/methods.rs:356:21
--> $DIR/methods.rs:328:21
|
LL | btree.entry(42).or_insert(String::new());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(String::new)`
error: use of `unwrap_or` followed by a function call
--> $DIR/methods.rs:359:21
--> $DIR/methods.rs:331:21
|
LL | let _ = stringy.unwrap_or("".to_owned());
| ^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "".to_owned())`
error: called `.iter().nth()` on a Vec. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:370:23
--> $DIR/methods.rs:342:23
|
LL | let bad_vec = some_vec.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^
@ -332,48 +300,48 @@ LL | let bad_vec = some_vec.iter().nth(3);
= note: `-D clippy::iter-nth` implied by `-D warnings`
error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:371:26
--> $DIR/methods.rs:343:26
|
LL | let bad_slice = &some_vec[..].iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter().nth()` on a slice. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:372:31
--> $DIR/methods.rs:344:31
|
LL | let bad_boxed_slice = boxed_slice.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter().nth()` on a VecDeque. Calling `.get()` is both faster and more readable
--> $DIR/methods.rs:373:29
--> $DIR/methods.rs:345:29
|
LL | let bad_vec_deque = some_vec_deque.iter().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a Vec. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:378:23
--> $DIR/methods.rs:350:23
|
LL | let bad_vec = some_vec.iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a slice. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:381:26
--> $DIR/methods.rs:353:26
|
LL | let bad_slice = &some_vec[..].iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: called `.iter_mut().nth()` on a VecDeque. Calling `.get_mut()` is both faster and more readable
--> $DIR/methods.rs:384:29
--> $DIR/methods.rs:356:29
|
LL | let bad_vec_deque = some_vec_deque.iter_mut().nth(3);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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
--> $DIR/methods.rs:396:13
--> $DIR/methods.rs:368:13
|
LL | let _ = opt.unwrap();
| ^^^^^^^^^^^^
|
= note: `-D clippy::option-unwrap-used` implied by `-D warnings`
error: aborting due to 46 previous errors
error: aborting due to 43 previous errors

37
tests/ui/result_map_unwrap_or_else.rs Normal file
View file

@ -0,0 +1,37 @@
// Copyright 2014-2019 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
//! Checks implementation of `RESULT_MAP_UNWRAP_OR_ELSE`
#![warn(clippy::result_map_unwrap_or_else)]
include!("../auxiliary/option_helpers.rs");
fn result_methods() {
let res: Result<i32, ()> = Ok(1);
// Check RESULT_MAP_UNWRAP_OR_ELSE
// single line case
let _ = res.map(|x| x + 1)
.unwrap_or_else(|e| 0); // should lint even though this call is on a separate line
// multi line cases
let _ = res.map(|x| {
x + 1
}
).unwrap_or_else(|e| 0);
let _ = res.map(|x| x + 1)
.unwrap_or_else(|e|
0
);
// macro case
let _ = opt_map!(res, |x| x + 1).unwrap_or_else(|e| 0); // should not lint
}
fn main() {}

34
tests/ui/result_map_unwrap_or_else.stderr Normal file
View file

@ -0,0 +1,34 @@
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/result_map_unwrap_or_else.rs:21:13
|
LL | let _ = res.map(|x| x + 1)
| _____________^
LL | |
LL | | .unwrap_or_else(|e| 0); // should lint even though this call is on a separate line
| |_____________________________________^
|
= note: `-D clippy::result-map-unwrap-or-else` implied by `-D warnings`
= note: replace `map(|x| x + 1).unwrap_or_else(|e| 0)` with `ok().map_or_else(|e| 0, |x| x + 1)`
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/result_map_unwrap_or_else.rs:25:13
|
LL | let _ = res.map(|x| {
| _____________^
LL | | x + 1
LL | | }
LL | | ).unwrap_or_else(|e| 0);
| |_____________________________________^
error: called `map(f).unwrap_or_else(g)` on a Result value. This can be done more directly by calling `ok().map_or_else(g, f)` instead
--> $DIR/result_map_unwrap_or_else.rs:29:13
|
LL | let _ = res.map(|x| x + 1)
| _____________^
LL | | .unwrap_or_else(|e|
LL | | 0
LL | | );
| |_________________^
error: aborting due to 3 previous errors