src/test/ui/fmt/format-string-error.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // ignore-tidy-tab
  12
  13 fn main() {
  14     println!("{");
  15     //~^ ERROR invalid format string: expected `'}'` but string was terminated
  16     println!("{{}}");
  17     println!("}");
  18     //~^ ERROR invalid format string: unmatched `}` found
  19     let _ = format!("{_foo}", _foo = 6usize);
  20     //~^ ERROR invalid format string: invalid argument name `_foo`
  21     let _ = format!("{_}", _ = 6usize);
  22     //~^ ERROR invalid format string: invalid argument name `_`
  23     let _ = format!("{");
  24     //~^ ERROR invalid format string: expected `'}'` but string was terminated
  25     let _ = format!("}");
  26     //~^ ERROR invalid format string: unmatched `}` found
  27     let _ = format!("{\\}");
  28     //~^ ERROR invalid format string: expected `'}'`, found `'\\'`
  29     let _ = format!("\n\n\n{\n\n\n");
  30     //~^ ERROR invalid format string
  31     let _ = format!(r###"
  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
  53     let _ = format!(r###"
  54
  55
  56
  57         }
  58
  59 "###);
  60     //~^^^ ERROR invalid format string: unmatched `}` found
  61 }