src/test/ui/parser/issues/issue-57819.rs

   1 // run-rustfix
   2
   3 #![allow(warnings)]
   4
   5 // This test checks that the following error is emitted and the suggestion works:
   6 //
   7 // ```
   8 // let _ = vec![1, 2, 3].into_iter().collect::<<<Vec<usize>>();
   9 //                                            ^^ help: remove extra angle brackets
  10 // ```
  11
  12 trait Foo {
  13     type Output;
  14 }
  15
  16 fn foo<T: Foo>() {
  17     // More complex cases with more than one correct leading `<` character:
  18
  19     bar::<<<<<T as Foo>::Output>();
  20     //~^ ERROR unmatched angle bracket
  21
  22     bar::<<<<T as Foo>::Output>();
  23     //~^ ERROR unmatched angle bracket
  24
  25     bar::<<<T as Foo>::Output>();
  26     //~^ ERROR unmatched angle bracket
  27
  28     bar::<<T as Foo>::Output>();
  29 }
  30
  31 fn bar<T>() {}
  32
  33 fn main() {
  34     let _ = vec![1, 2, 3].into_iter().collect::<<<<<Vec<usize>>();
  35     //~^ ERROR unmatched angle bracket
  36
  37     let _ = vec![1, 2, 3].into_iter().collect::<<<<Vec<usize>>();
  38     //~^ ERROR unmatched angle bracket
  39
  40     let _ = vec![1, 2, 3].into_iter().collect::<<<Vec<usize>>();
  41     //~^ ERROR unmatched angle bracket
  42
  43     let _ = vec![1, 2, 3].into_iter().collect::<<Vec<usize>>();
  44     //~^ ERROR unmatched angle bracket
  45
  46     let _ = vec![1, 2, 3].into_iter().collect::<Vec<usize>>();
  47 }