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test_experimental_a/
lib.rs

1pub fn add( left : usize, right : usize ) -> usize
2{
3  left + right
4}
5
6#[ cfg( test ) ]
7mod tests
8{
9  use super::*;
10
11
12  #[ test ]
13  fn it_works()
14  {
15    let result = add( 2, 2 );
16    assert_eq!( result, 4 );
17  }
18}