tests/ui/open_options.rs

   1
   2
   3 use std::fs::OpenOptions;
   4
   5 #[allow(unused_must_use)]
   6 #[warn(nonsensical_open_options)]
   7 fn main() {
   8     OpenOptions::new().read(true).truncate(true).open("foo.txt");
   9     OpenOptions::new().append(true).truncate(true).open("foo.txt");
  10
  11     OpenOptions::new().read(true).read(false).open("foo.txt");
  12     OpenOptions::new().create(true).create(false).open("foo.txt");
  13     OpenOptions::new().write(true).write(false).open("foo.txt");
  14     OpenOptions::new().append(true).append(false).open("foo.txt");
  15     OpenOptions::new().truncate(true).truncate(false).open("foo.txt");
  16 }