src/tools/clippy/tests/ui/eprint_with_newline.rs

   1 #![allow(clippy::print_literal)]
   2 #![warn(clippy::print_with_newline)]
   3
   4 fn main() {
   5     eprint!("Hello\n");
   6     eprint!("Hello {}\n", "world");
   7     eprint!("Hello {} {}\n", "world", "#2");
   8     eprint!("{}\n", 1265);
   9     eprint!("\n");
  10
  11     // these are all fine
  12     eprint!("");
  13     eprint!("Hello");
  14     eprintln!("Hello");
  15     eprintln!("Hello\n");
  16     eprintln!("Hello {}\n", "world");
  17     eprint!("Issue\n{}", 1265);
  18     eprint!("{}", 1265);
  19     eprint!("\n{}", 1275);
  20     eprint!("\n\n");
  21     eprint!("like eof\n\n");
  22     eprint!("Hello {} {}\n\n", "world", "#2");
  23     eprintln!("\ndon't\nwarn\nfor\nmultiple\nnewlines\n"); // #3126
  24     eprintln!("\nbla\n\n"); // #3126
  25
  26     // Escaping
  27     eprint!("\\n"); // #3514
  28     eprint!("\\\n"); // should fail
  29     eprint!("\\\\n");
  30
  31     // Raw strings
  32     eprint!(r"\n"); // #3778
  33
  34     // Literal newlines should also fail
  35     eprint!(
  36         "
  37 "
  38     );
  39     eprint!(
  40         r"
  41 "
  42     );
  43
  44     // Don't warn on CRLF (#4208)
  45     eprint!("\r\n");
  46     eprint!("foo\r\n");
  47     eprint!("\\r\n"); //~ ERROR
  48     eprint!("foo\rbar\n");
  49
  50     // Ignore expanded format strings
  51     macro_rules! newline {
  52         () => {
  53             "\n"
  54         };
  55     }
  56     eprint!(newline!());
  57 }