src/tools/clippy/tests/ui/manual_instant_elapsed.rs

   1 #![warn(clippy::manual_instant_elapsed)]
   2 #![allow(clippy::unnecessary_operation)]
   3 #![allow(clippy::unchecked_duration_subtraction)]
   4 #![allow(unused_variables)]
   5 #![allow(unused_must_use)]
   6
   7 use std::time::Instant;
   8
   9 fn main() {
  10     let prev_instant = Instant::now();
  11
  12     {
  13         // don't influence
  14         let another_instant = Instant::now();
  15     }
  16
  17     let duration = Instant::now() - prev_instant;
  18
  19     // don't catch
  20     let duration = prev_instant.elapsed();
  21
  22     Instant::now() - duration;
  23
  24     let ref_to_instant = &Instant::now();
  25
  26     Instant::now() - *ref_to_instant; // to ensure parens are added correctly
  27 }