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.
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.
11 // aux-build:three-equals.rs
14 #![feature(proc_macro_hygiene)]
16 extern crate three_equals;
18 use three_equals::three_equals;
24 // Need exactly three equals.
25 three_equals!(==); //~ ERROR found 2 equal signs, need exactly 3
27 // Need exactly three equals.
28 three_equals!(=====); //~ ERROR expected EOF
30 // Only equals accepted.
31 three_equals!(abc); //~ ERROR expected `=`
33 // Only equals accepted.
34 three_equals!(!!); //~ ERROR expected `=`
36 // Only three characters expected.
37 three_equals!(===a); //~ ERROR expected EOF