Add run-rustfix for precedence test

Author: detrumi

tests/ui/precedence.fixed

@@ -0,0 +1,37 @@
+// run-rustfix
+#![warn(clippy::precedence)]
+#![allow(unused_must_use, clippy::no_effect, clippy::unnecessary_operation)]
+#![allow(clippy::identity_op)]
+#![allow(clippy::eq_op)]
+
+macro_rules! trip {
+    ($a:expr) => {
+        match $a & 0b1111_1111u8 {
+            0 => println!("a is zero ({})", $a),
+            _ => println!("a is {}", $a),
+        }
+    };
+}
+
+fn main() {
+    1 << (2 + 3);
+    (1 + 2) << 3;
+    4 >> (1 + 1);
+    (1 + 3) >> 2;
+    1 ^ (1 - 1);
+    3 | (2 - 1);
+    3 & (5 - 2);
+    -(1i32.abs());
+    -(1f32.abs());
+
+    // These should not trigger an error
+    let _ = (-1i32).abs();
+    let _ = (-1f32).abs();
+    let _ = -(1i32).abs();
+    let _ = -(1f32).abs();
+    let _ = -(1i32.abs());
+    let _ = -(1f32.abs());
+
+    let b = 3;
+    trip!(b * 8);
+}

tests/ui/precedence.rs

@@ -1,10 +1,12 @@
-#[warn(clippy::precedence)]
-#[allow(clippy::identity_op)]
-#[allow(clippy::eq_op)]
+// run-rustfix
+#![warn(clippy::precedence)]
+#![allow(unused_must_use, clippy::no_effect, clippy::unnecessary_operation)]
+#![allow(clippy::identity_op)]
+#![allow(clippy::eq_op)]
 
 macro_rules! trip {
     ($a:expr) => {
-        match $a & 0b1111_1111i8 {
+        match $a & 0b1111_1111u8 {
             0 => println!("a is zero ({})", $a),
             _ => println!("a is {}", $a),
         }

tests/ui/precedence.stderr

@@ -1,55 +1,55 @@
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:15:5
+  --> $DIR/precedence.rs:17:5
    |
 LL |     1 << 2 + 3;
    |     ^^^^^^^^^^ help: consider parenthesizing your expression: `1 << (2 + 3)`
    |
    = note: `-D clippy::precedence` implied by `-D warnings`
 
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:16:5
+  --> $DIR/precedence.rs:18:5
    |
 LL |     1 + 2 << 3;
    |     ^^^^^^^^^^ help: consider parenthesizing your expression: `(1 + 2) << 3`
 
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:17:5
+  --> $DIR/precedence.rs:19:5
    |
 LL |     4 >> 1 + 1;
    |     ^^^^^^^^^^ help: consider parenthesizing your expression: `4 >> (1 + 1)`
 
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:18:5
+  --> $DIR/precedence.rs:20:5
    |
 LL |     1 + 3 >> 2;
    |     ^^^^^^^^^^ help: consider parenthesizing your expression: `(1 + 3) >> 2`
 
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:19:5
+  --> $DIR/precedence.rs:21:5
    |
 LL |     1 ^ 1 - 1;
    |     ^^^^^^^^^ help: consider parenthesizing your expression: `1 ^ (1 - 1)`
 
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:20:5
+  --> $DIR/precedence.rs:22:5
    |
 LL |     3 | 2 - 1;
    |     ^^^^^^^^^ help: consider parenthesizing your expression: `3 | (2 - 1)`
 
 error: operator precedence can trip the unwary
-  --> $DIR/precedence.rs:21:5
+  --> $DIR/precedence.rs:23:5
    |
 LL |     3 & 5 - 2;
    |     ^^^^^^^^^ help: consider parenthesizing your expression: `3 & (5 - 2)`
 
 error: unary minus has lower precedence than method call
-  --> $DIR/precedence.rs:22:5
+  --> $DIR/precedence.rs:24:5
    |
 LL |     -1i32.abs();
    |     ^^^^^^^^^^^ help: consider adding parentheses to clarify your intent: `-(1i32.abs())`
 
 error: unary minus has lower precedence than method call
-  --> $DIR/precedence.rs:23:5
+  --> $DIR/precedence.rs:25:5
    |
 LL |     -1f32.abs();
    |     ^^^^^^^^^^^ help: consider adding parentheses to clarify your intent: `-(1f32.abs())`