src/test/ui/suggestions/suggest-tryinto-edition-change.rs

   1 // Make sure that trying to access `TryInto`, `TryFrom`, `FromIterator` in pre-2021 mentions
   2 // Edition 2021 change
   3 // edition:2018
   4
   5 fn test() {
   6     let _i: i16 = 0_i32.try_into().unwrap();
   7     //~^ ERROR no method named `try_into` found for type `i32` in the current scope
   8     //~| NOTE method not found in `i32`
   9     //~| NOTE 'std::convert::TryInto' is included in the prelude starting in Edition 2021
  10
  11     let _i: i16 = TryFrom::try_from(0_i32).unwrap();
  12     //~^ ERROR failed to resolve: use of undeclared type
  13     //~| NOTE use of undeclared type
  14     //~| NOTE 'std::convert::TryFrom' is included in the prelude starting in Edition 2021
  15     //~| NOTE 'core::convert::TryFrom' is included in the prelude starting in Edition 2021
  16
  17     let _i: i16 = TryInto::try_into(0_i32).unwrap();
  18     //~^ ERROR failed to resolve: use of undeclared type
  19     //~| NOTE use of undeclared type
  20     //~| NOTE 'std::convert::TryInto' is included in the prelude starting in Edition 2021
  21     //~| NOTE 'core::convert::TryInto' is included in the prelude starting in Edition 2021
  22
  23     let _v: Vec<_> = FromIterator::from_iter(&[1]);
  24     //~^ ERROR failed to resolve: use of undeclared type
  25     //~| NOTE use of undeclared type
  26     //~| NOTE 'std::iter::FromIterator' is included in the prelude starting in Edition 2021
  27     //~| NOTE 'core::iter::FromIterator' is included in the prelude starting in Edition 2021
  28 }
  29
  30 fn main() {
  31     test();
  32 }