src/test/ui-fulldeps/proc-macro/three-equals.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 // aux-build:three-equals.rs
  12 // ignore-stage1
  13
  14 #![feature(proc_macro_hygiene)]
  15
  16 extern crate three_equals;
  17
  18 use three_equals::three_equals;
  19
  20 fn main() {
  21     // This one is okay.
  22     three_equals!(===);
  23
  24     // Need exactly three equals.
  25     three_equals!(==); //~ ERROR found 2 equal signs, need exactly 3
  26
  27     // Need exactly three equals.
  28     three_equals!(=====); //~ ERROR expected EOF
  29
  30     // Only equals accepted.
  31     three_equals!(abc); //~ ERROR expected `=`
  32
  33     // Only equals accepted.
  34     three_equals!(!!); //~ ERROR expected `=`
  35
  36     // Only three characters expected.
  37     three_equals!(===a); //~ ERROR expected EOF
  38 }