tests/ui/fmt/format-string-error.rs

   1 // ignore-tidy-tab
   2
   3 fn main() {
   4     println!("{");
   5     //~^ ERROR invalid format string: expected `'}'` but string was terminated
   6     println!("{{}}");
   7     println!("}");
   8     //~^ ERROR invalid format string: unmatched `}` found
   9     let _ = format!("{_}", _ = 6usize);
  10     //~^ ERROR invalid format string: invalid argument name `_`
  11     let _ = format!("{a:_}", a = "", _ = 0);
  12     //~^ ERROR invalid format string: invalid argument name `_`
  13     let _ = format!("{a:._$}", a = "", _ = 0);
  14     //~^ ERROR invalid format string: invalid argument name `_`
  15     let _ = format!("{");
  16     //~^ ERROR invalid format string: expected `'}'` but string was terminated
  17     let _ = format!("}");
  18     //~^ ERROR invalid format string: unmatched `}` found
  19     let _ = format!("{\\}");
  20     //~^ ERROR invalid format string: expected `'}'`, found `'\\'`
  21     let _ = format!("\n\n\n{\n\n\n");
  22     //~^ ERROR invalid format string
  23     let _ = format!(r###"
  24
  25
  26
  27         {"###);
  28     //~^ ERROR invalid format string
  29     let _ = format!(r###"
  30
  31
  32
  33         {
  34
  35 "###);
  36     //~^ ERROR invalid format string
  37     let _ = format!(r###"
  38
  39
  40
  41         }
  42
  43 "###);
  44     //~^^^ ERROR invalid format string
  45     let _ = format!(r###"
  46
  47
  48
  49         }
  50
  51 "###);
  52     //~^^^ ERROR invalid format string: unmatched `}` found
  53     println!("{} {} {}", 1, 2);
  54     //~^ ERROR 3 positional arguments in format string, but there are 2 arguments
  55 }