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

   1 // Tests from for_loop.rs that don't have suggestions
   2
   3 #![allow(clippy::single_range_in_vec_init)]
   4
   5 #[warn(clippy::single_element_loop)]
   6 fn main() {
   7     let item1 = 2;
   8     for item in &[item1] {
   9         dbg!(item);
  10     }
  11
  12     for item in [item1].iter() {
  13         dbg!(item);
  14     }
  15
  16     for item in &[0..5] {
  17         dbg!(item);
  18     }
  19
  20     for item in [0..5].iter_mut() {
  21         dbg!(item);
  22     }
  23
  24     for item in [0..5] {
  25         dbg!(item);
  26     }
  27
  28     for item in [0..5].into_iter() {
  29         dbg!(item);
  30     }
  31
  32     // should not lint (issue #10018)
  33     for e in [42] {
  34         if e > 0 {
  35             continue;
  36         }
  37     }
  38
  39     // should not lint (issue #10018)
  40     for e in [42] {
  41         if e > 0 {
  42             break;
  43         }
  44     }
  45
  46     // should lint (issue #10018)
  47     for _ in [42] {
  48         let _f = |n: u32| {
  49             for i in 0..n {
  50                 if i > 10 {
  51                     dbg!(i);
  52                     break;
  53                 }
  54             }
  55         };
  56     }
  57 }