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

   1 // FIXME: Ideally these suggestions would be fixed via rustfix. Blocked by rust-lang/rust#53934
   2 // // run-rustfix
   3
   4 #![allow(clippy::print_literal)]
   5 #![warn(clippy::print_with_newline)]
   6
   7 fn main() {
   8     print!("Hello\n");
   9     print!("Hello {}\n", "world");
  10     print!("Hello {} {}\n", "world", "#2");
  11     print!("{}\n", 1265);
  12     print!("\n");
  13
  14     // these are all fine
  15     print!("");
  16     print!("Hello");
  17     println!("Hello");
  18     println!("Hello\n");
  19     println!("Hello {}\n", "world");
  20     print!("Issue\n{}", 1265);
  21     print!("{}", 1265);
  22     print!("\n{}", 1275);
  23     print!("\n\n");
  24     print!("like eof\n\n");
  25     print!("Hello {} {}\n\n", "world", "#2");
  26     println!("\ndon't\nwarn\nfor\nmultiple\nnewlines\n"); // #3126
  27     println!("\nbla\n\n"); // #3126
  28
  29     // Escaping
  30     print!("\\n"); // #3514
  31     print!("\\\n"); // should fail
  32     print!("\\\\n");
  33
  34     // Raw strings
  35     print!(r"\n"); // #3778
  36
  37     // Literal newlines should also fail
  38     print!(
  39         "
  40 "
  41     );
  42     print!(
  43         r"
  44 "
  45     );
  46
  47     // Don't warn on CRLF (#4208)
  48     print!("\r\n");
  49     print!("foo\r\n");
  50     print!("\\r\n"); //~ ERROR
  51     print!("foo\rbar\n") // ~ ERROR
  52 }