Add run-rustfix to duration_subsec test

Author: detrumi

tests/ui/duration_subsec.fixed

@@ -0,0 +1,29 @@
+// run-rustfix
+#![allow(dead_code)]
+#![warn(clippy::duration_subsec)]
+
+use std::time::Duration;
+
+fn main() {
+    let dur = Duration::new(5, 0);
+
+    let bad_millis_1 = dur.subsec_millis();
+    let bad_millis_2 = dur.subsec_millis();
+    let good_millis = dur.subsec_millis();
+    assert_eq!(bad_millis_1, good_millis);
+    assert_eq!(bad_millis_2, good_millis);
+
+    let bad_micros = dur.subsec_micros();
+    let good_micros = dur.subsec_micros();
+    assert_eq!(bad_micros, good_micros);
+
+    // Handle refs
+    let _ = (&dur).subsec_micros();
+
+    // Handle constants
+    const NANOS_IN_MICRO: u32 = 1_000;
+    let _ = dur.subsec_micros();
+
+    // Other literals aren't linted
+    let _ = dur.subsec_nanos() / 699;
+}

tests/ui/duration_subsec.rs

@@ -1,3 +1,5 @@
+// run-rustfix
+#![allow(dead_code)]
 #![warn(clippy::duration_subsec)]
 
 use std::time::Duration;

tests/ui/duration_subsec.stderr

@@ -1,31 +1,31 @@
 error: Calling `subsec_millis()` is more concise than this calculation
-  --> $DIR/duration_subsec.rs:8:24
+  --> $DIR/duration_subsec.rs:10:24
    |
 LL |     let bad_millis_1 = dur.subsec_micros() / 1_000;
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `dur.subsec_millis()`
    |
    = note: `-D clippy::duration-subsec` implied by `-D warnings`
 
 error: Calling `subsec_millis()` is more concise than this calculation
-  --> $DIR/duration_subsec.rs:9:24
+  --> $DIR/duration_subsec.rs:11:24
    |
 LL |     let bad_millis_2 = dur.subsec_nanos() / 1_000_000;
    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `dur.subsec_millis()`
 
 error: Calling `subsec_micros()` is more concise than this calculation
-  --> $DIR/duration_subsec.rs:14:22
+  --> $DIR/duration_subsec.rs:16:22
    |
 LL |     let bad_micros = dur.subsec_nanos() / 1_000;
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `dur.subsec_micros()`
 
 error: Calling `subsec_micros()` is more concise than this calculation
-  --> $DIR/duration_subsec.rs:19:13
+  --> $DIR/duration_subsec.rs:21:13
    |
 LL |     let _ = (&dur).subsec_nanos() / 1_000;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(&dur).subsec_micros()`
 
 error: Calling `subsec_micros()` is more concise than this calculation
-  --> $DIR/duration_subsec.rs:23:13
+  --> $DIR/duration_subsec.rs:25:13
    |
 LL |     let _ = dur.subsec_nanos() / NANOS_IN_MICRO;
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `dur.subsec_micros()`