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UI test cleanup: Extract needless_range_loop tests

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Philipp Hansch 2019-04-24 08:01:16 +02:00
parent 9897442f27
commit 0fbe49d8a6
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GPG Key ID: 82AA61CAA11397E6
4 changed files with 234 additions and 228 deletions
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63
tests/ui/for_loop.rs
View File

@ -35,70 +35,7 @@ impl Unrelated {
#[allow(clippy::many_single_char_names, unused_variables, clippy::into_iter_on_array)]
fn main() {
const MAX_LEN: usize = 42;
let mut vec = vec![1, 2, 3, 4];
let vec2 = vec![1, 2, 3, 4];
for i in 0..vec.len() {
println!("{}", vec[i]);
}
for i in 0..vec.len() {
let i = 42; // make a different `i`
println!("{}", vec[i]); // ok, not the `i` of the for-loop
}
for i in 0..vec.len() {
let _ = vec[i];
}
// ICE #746
for j in 0..4 {
println!("{:?}", STATIC[j]);
}
for j in 0..4 {
println!("{:?}", CONST[j]);
}
for i in 0..vec.len() {
println!("{} {}", vec[i], i);
}
for i in 0..vec.len() {
// not an error, indexing more than one variable
println!("{} {}", vec[i], vec2[i]);
}
for i in 0..vec.len() {
println!("{}", vec2[i]);
}
for i in 5..vec.len() {
println!("{}", vec[i]);
}
for i in 0..MAX_LEN {
println!("{}", vec[i]);
}
for i in 0..=MAX_LEN {
println!("{}", vec[i]);
}
for i in 5..10 {
println!("{}", vec[i]);
}
for i in 5..=10 {
println!("{}", vec[i]);
}
for i in 5..vec.len() {
println!("{} {}", vec[i], i);
}
for i in 5..10 {
println!("{} {}", vec[i], i);
}
for i in 10..0 {
println!("{}", i);

178
tests/ui/for_loop.stderr
View File

@ -1,137 +1,5 @@
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:41:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
|
= note: `-D clippy::needless-range-loop` implied by `-D warnings`
help: consider using an iterator
|
LL | for <item> in &vec {
| ^^^^^^ ^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:50:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in &vec {
| ^^^^^^ ^^^^
error: the loop variable `j` is only used to index `STATIC`.
--> $DIR/for_loop.rs:55:14
|
LL | for j in 0..4 {
| ^^^^
help: consider using an iterator
|
LL | for <item> in &STATIC {
| ^^^^^^ ^^^^^^^
error: the loop variable `j` is only used to index `CONST`.
--> $DIR/for_loop.rs:59:14
|
LL | for j in 0..4 {
| ^^^^
help: consider using an iterator
|
LL | for <item> in &CONST {
| ^^^^^^ ^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/for_loop.rs:63:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for (i, <item>) in vec.iter().enumerate() {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec2`.
--> $DIR/for_loop.rs:71:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec2.iter().take(vec.len()) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:75:14
|
LL | for i in 5..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().skip(5) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:79:14
|
LL | for i in 0..MAX_LEN {
| ^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(MAX_LEN) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:83:14
|
LL | for i in 0..=MAX_LEN {
| ^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(MAX_LEN + 1) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:87:14
|
LL | for i in 5..10 {
| ^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(10).skip(5) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/for_loop.rs:91:14
|
LL | for i in 5..=10 {
| ^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(10 + 1).skip(5) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/for_loop.rs:95:14
|
LL | for i in 5..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for (i, <item>) in vec.iter().enumerate().skip(5) {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/for_loop.rs:99:14
|
LL | for i in 5..10 {
| ^^^^^
help: consider using an iterator
|
LL | for (i, <item>) in vec.iter().enumerate().take(10).skip(5) {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:103:14
--> $DIR/for_loop.rs:40:14
|
LL | for i in 10..0 {
| ^^^^^
@ -143,7 +11,7 @@ LL | for i in (0..10).rev() {
| ^^^^^^^^^^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:107:14
--> $DIR/for_loop.rs:44:14
|
LL | for i in 10..=0 {
| ^^^^^^
@ -153,7 +21,7 @@ LL | for i in (0...10).rev() {
| ^^^^^^^^^^^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:111:14
--> $DIR/for_loop.rs:48:14
|
LL | for i in MAX_LEN..0 {
| ^^^^^^^^^^
@ -163,13 +31,13 @@ LL | for i in (0..MAX_LEN).rev() {
| ^^^^^^^^^^^^^^^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:115:14
--> $DIR/for_loop.rs:52:14
|
LL | for i in 5..5 {
| ^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:140:14
--> $DIR/for_loop.rs:77:14
|
LL | for i in 10..5 + 4 {
| ^^^^^^^^^
@ -179,7 +47,7 @@ LL | for i in (5 + 4..10).rev() {
| ^^^^^^^^^^^^^^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:144:14
--> $DIR/for_loop.rs:81:14
|
LL | for i in (5 + 2)..(3 - 1) {
| ^^^^^^^^^^^^^^^^
@ -189,13 +57,13 @@ LL | for i in ((3 - 1)..(5 + 2)).rev() {
| ^^^^^^^^^^^^^^^^^^^^^^^^
error: this range is empty so this for loop will never run
--> $DIR/for_loop.rs:148:14
--> $DIR/for_loop.rs:85:14
|
LL | for i in (5 + 2)..(8 - 1) {
| ^^^^^^^^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:170:15
--> $DIR/for_loop.rs:107:15
|
LL | for _v in vec.iter() {}
| ^^^^^^^^^^
@ -203,13 +71,13 @@ LL | for _v in vec.iter() {}
= note: `-D clippy::explicit-iter-loop` implied by `-D warnings`
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:172:15
--> $DIR/for_loop.rs:109:15
|
LL | for _v in vec.iter_mut() {}
| ^^^^^^^^^^^^^^
error: it is more concise to loop over containers instead of using explicit iteration methods`
--> $DIR/for_loop.rs:175:15
--> $DIR/for_loop.rs:112:15
|
LL | for _v in out_vec.into_iter() {}
| ^^^^^^^^^^^^^^^^^^^
@ -217,67 +85,67 @@ LL | for _v in out_vec.into_iter() {}
= note: `-D clippy::explicit-into-iter-loop` implied by `-D warnings`
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:178:15
--> $DIR/for_loop.rs:115:15
|
LL | for _v in array.into_iter() {}
| ^^^^^^^^^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:183:15
--> $DIR/for_loop.rs:120:15
|
LL | for _v in [1, 2, 3].iter() {}
| ^^^^^^^^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:187:15
--> $DIR/for_loop.rs:124:15
|
LL | for _v in [0; 32].iter() {}
| ^^^^^^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:192:15
--> $DIR/for_loop.rs:129:15
|
LL | for _v in ll.iter() {}
| ^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:195:15
--> $DIR/for_loop.rs:132:15
|
LL | for _v in vd.iter() {}
| ^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:198:15
--> $DIR/for_loop.rs:135:15
|
LL | for _v in bh.iter() {}
| ^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:201:15
--> $DIR/for_loop.rs:138:15
|
LL | for _v in hm.iter() {}
| ^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:204:15
--> $DIR/for_loop.rs:141:15
|
LL | for _v in bt.iter() {}
| ^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:207:15
--> $DIR/for_loop.rs:144:15
|
LL | for _v in hs.iter() {}
| ^^^^^^^^^
error: it is more concise to loop over references to containers instead of using explicit iteration methods
--> $DIR/for_loop.rs:210:15
--> $DIR/for_loop.rs:147:15
|
LL | for _v in bs.iter() {}
| ^^^^^^^^^
error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want
--> $DIR/for_loop.rs:212:15
--> $DIR/for_loop.rs:149:15
|
LL | for _v in vec.iter().next() {}
| ^^^^^^^^^^^^^^^^^
@ -285,12 +153,12 @@ LL | for _v in vec.iter().next() {}
= note: `-D clippy::iter-next-loop` implied by `-D warnings`
error: you are collect()ing an iterator and throwing away the result. Consider using an explicit for loop to exhaust the iterator
--> $DIR/for_loop.rs:219:5
--> $DIR/for_loop.rs:156:5
|
LL | vec.iter().cloned().map(|x| out.push(x)).collect::<Vec<_>>();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `-D clippy::unused-collect` implied by `-D warnings`
error: aborting due to 35 previous errors
error: aborting due to 22 previous errors

71
tests/ui/needless_range_loop.rs
View File

@ -1,8 +1,15 @@
#![allow(clippy::cognitive_complexity)]
static STATIC: [usize; 4] = [0, 1, 8, 16];
const CONST: [usize; 4] = [0, 1, 8, 16];
fn calc_idx(i: usize) -> usize {
(i + i + 20) % 4
}
fn main() {
const MAX_LEN: usize = 42;
let ns = vec![2, 3, 5, 7];
for i in 3..10 {
@ -81,6 +88,70 @@ fn main() {
println!("{}", arr[i]);
}
let mut vec = vec![1, 2, 3, 4];
let vec2 = vec![1, 2, 3, 4];
for i in 0..vec.len() {
println!("{}", vec[i]);
}
for i in 0..vec.len() {
let i = 42; // make a different `i`
println!("{}", vec[i]); // ok, not the `i` of the for-loop
}
for i in 0..vec.len() {
let _ = vec[i];
}
// ICE #746
for j in 0..4 {
println!("{:?}", STATIC[j]);
}
for j in 0..4 {
println!("{:?}", CONST[j]);
}
for i in 0..vec.len() {
println!("{} {}", vec[i], i);
}
for i in 0..vec.len() {
// not an error, indexing more than one variable
println!("{} {}", vec[i], vec2[i]);
}
for i in 0..vec.len() {
println!("{}", vec2[i]);
}
for i in 5..vec.len() {
println!("{}", vec[i]);
}
for i in 0..MAX_LEN {
println!("{}", vec[i]);
}
for i in 0..=MAX_LEN {
println!("{}", vec[i]);
}
for i in 5..10 {
println!("{}", vec[i]);
}
for i in 5..=10 {
println!("{}", vec[i]);
}
for i in 5..vec.len() {
println!("{} {}", vec[i], i);
}
for i in 5..10 {
println!("{} {}", vec[i], i);
}
// #2542
for i in 0..vec.len() {
vec[i] = Some(1).unwrap_or_else(|| panic!("error on {}", i));

150
tests/ui/needless_range_loop.stderr
View File

@ -1,5 +1,5 @@
error: the loop variable `i` is only used to index `ns`.
--> $DIR/needless_range_loop.rs:8:14
--> $DIR/needless_range_loop.rs:15:14
|
LL | for i in 3..10 {
| ^^^^^
@ -11,7 +11,7 @@ LL | for <item> in ns.iter().take(10).skip(3) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `ms`.
--> $DIR/needless_range_loop.rs:29:14
--> $DIR/needless_range_loop.rs:36:14
|
LL | for i in 0..ms.len() {
| ^^^^^^^^^^^
@ -21,7 +21,7 @@ LL | for <item> in &mut ms {
| ^^^^^^ ^^^^^^^
error: the loop variable `i` is only used to index `ms`.
--> $DIR/needless_range_loop.rs:35:14
--> $DIR/needless_range_loop.rs:42:14
|
LL | for i in 0..ms.len() {
| ^^^^^^^^^^^
@ -31,7 +31,7 @@ LL | for <item> in &mut ms {
| ^^^^^^ ^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:59:14
--> $DIR/needless_range_loop.rs:66:14
|
LL | for i in x..x + 4 {
| ^^^^^^^^
@ -41,7 +41,7 @@ LL | for <item> in vec.iter_mut().skip(x).take(4) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:66:14
--> $DIR/needless_range_loop.rs:73:14
|
LL | for i in x..=x + 4 {
| ^^^^^^^^^
@ -51,7 +51,7 @@ LL | for <item> in vec.iter_mut().skip(x).take(4 + 1) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `arr`.
--> $DIR/needless_range_loop.rs:72:14
--> $DIR/needless_range_loop.rs:79:14
|
LL | for i in 0..3 {
| ^^^^
@ -61,7 +61,7 @@ LL | for <item> in &arr {
| ^^^^^^ ^^^^
error: the loop variable `i` is only used to index `arr`.
--> $DIR/needless_range_loop.rs:76:14
--> $DIR/needless_range_loop.rs:83:14
|
LL | for i in 0..2 {
| ^^^^
@ -71,7 +71,7 @@ LL | for <item> in arr.iter().take(2) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `arr`.
--> $DIR/needless_range_loop.rs:80:14
--> $DIR/needless_range_loop.rs:87:14
|
LL | for i in 1..3 {
| ^^^^
@ -80,8 +80,138 @@ help: consider using an iterator
LL | for <item> in arr.iter().skip(1) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:93:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in &vec {
| ^^^^^^ ^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:102:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in &vec {
| ^^^^^^ ^^^^
error: the loop variable `j` is only used to index `STATIC`.
--> $DIR/needless_range_loop.rs:107:14
|
LL | for j in 0..4 {
| ^^^^
help: consider using an iterator
|
LL | for <item> in &STATIC {
| ^^^^^^ ^^^^^^^
error: the loop variable `j` is only used to index `CONST`.
--> $DIR/needless_range_loop.rs:111:14
|
LL | for j in 0..4 {
| ^^^^
help: consider using an iterator
|
LL | for <item> in &CONST {
| ^^^^^^ ^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/needless_range_loop.rs:85:14
--> $DIR/needless_range_loop.rs:115:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for (i, <item>) in vec.iter().enumerate() {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec2`.
--> $DIR/needless_range_loop.rs:123:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec2.iter().take(vec.len()) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:127:14
|
LL | for i in 5..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().skip(5) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:131:14
|
LL | for i in 0..MAX_LEN {
| ^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(MAX_LEN) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:135:14
|
LL | for i in 0..=MAX_LEN {
| ^^^^^^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(MAX_LEN + 1) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:139:14
|
LL | for i in 5..10 {
| ^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(10).skip(5) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is only used to index `vec`.
--> $DIR/needless_range_loop.rs:143:14
|
LL | for i in 5..=10 {
| ^^^^^^
help: consider using an iterator
|
LL | for <item> in vec.iter().take(10 + 1).skip(5) {
| ^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/needless_range_loop.rs:147:14
|
LL | for i in 5..vec.len() {
| ^^^^^^^^^^^^
help: consider using an iterator
|
LL | for (i, <item>) in vec.iter().enumerate().skip(5) {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/needless_range_loop.rs:151:14
|
LL | for i in 5..10 {
| ^^^^^
help: consider using an iterator
|
LL | for (i, <item>) in vec.iter().enumerate().take(10).skip(5) {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the loop variable `i` is used to index `vec`
--> $DIR/needless_range_loop.rs:156:14
|
LL | for i in 0..vec.len() {
| ^^^^^^^^^^^^
@ -90,5 +220,5 @@ help: consider using an iterator
LL | for (i, <item>) in vec.iter_mut().enumerate() {
| ^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 9 previous errors
error: aborting due to 22 previous errors