src/tools/clippy/tests/ui/rc_clone_in_vec_init/arc.rs

   1 #![warn(clippy::rc_clone_in_vec_init)]
   2 use std::sync::{Arc, Mutex};
   3
   4 fn main() {}
   5
   6 fn should_warn_simple_case() {
   7     let v = vec![Arc::new("x".to_string()); 2];
   8 }
   9
  10 fn should_warn_simple_case_with_big_indentation() {
  11     if true {
  12         let k = 1;
  13         dbg!(k);
  14         if true {
  15             let v = vec![Arc::new("x".to_string()); 2];
  16         }
  17     }
  18 }
  19
  20 fn should_warn_complex_case() {
  21     let v = vec![
  22         std::sync::Arc::new(Mutex::new({
  23             let x = 1;
  24             dbg!(x);
  25             x
  26         }));
  27         2
  28     ];
  29
  30     let v1 = vec![
  31         Arc::new(Mutex::new({
  32             let x = 1;
  33             dbg!(x);
  34             x
  35         }));
  36         2
  37     ];
  38 }
  39
  40 fn should_not_warn_custom_arc() {
  41     #[derive(Clone)]
  42     struct Arc;
  43
  44     impl Arc {
  45         fn new() -> Self {
  46             Arc
  47         }
  48     }
  49
  50     let v = vec![Arc::new(); 2];
  51 }
  52
  53 fn should_not_warn_vec_from_elem_but_not_arc() {
  54     let v = vec![String::new(); 2];
  55     let v1 = vec![1; 2];
  56     let v2 = vec![
  57         Box::new(std::sync::Arc::new({
  58             let y = 3;
  59             dbg!(y);
  60             y
  61         }));
  62         2
  63     ];
  64 }
  65
  66 fn should_not_warn_vec_macro_but_not_from_elem() {
  67     let v = vec![Arc::new("x".to_string())];
  68 }