src/vendor/regex/tests/searcher.rs

   1 macro_rules! searcher {
   2     ($name:ident, $re:expr, $haystack:expr) => (
   3         searcher!($name, $re, $haystack, vec vec![]);
   4     );
   5     ($name:ident, $re:expr, $haystack:expr, $($steps:expr,)*) => (
   6         searcher!($name, $re, $haystack, vec vec![$($steps),*]);
   7     );
   8     ($name:ident, $re:expr, $haystack:expr, $($steps:expr),*) => (
   9         searcher!($name, $re, $haystack, vec vec![$($steps),*]);
  10     );
  11     ($name:ident, $re:expr, $haystack:expr, vec $expect_steps:expr) => (
  12         #[test]
  13         #[allow(unused_imports)]
  14         fn $name() {
  15             searcher_expr! {{
  16                 use std::str::pattern::{Pattern, Searcher};
  17                 use std::str::pattern::SearchStep::{Match, Reject, Done};
  18                 let re = regex!($re);
  19                 let mut se = re.into_searcher($haystack);
  20                 let mut got_steps = vec![];
  21                 loop {
  22                     match se.next() {
  23                         Done => break,
  24                         step => { got_steps.push(step); }
  25                     }
  26                 }
  27                 assert_eq!(got_steps, $expect_steps);
  28             }}
  29         }
  30     );
  31 }
  32
  33 searcher!(searcher_empty_regex_empty_haystack, r"", "", Match(0, 0));
  34 searcher!(searcher_empty_regex, r"", "ab",
  35           Match(0, 0), Reject(0, 1), Match(1, 1), Reject(1, 2), Match(2, 2));
  36 searcher!(searcher_empty_haystack, r"\d", "");
  37 searcher!(searcher_one_match, r"\d", "5",
  38           Match(0, 1));
  39 searcher!(searcher_no_match, r"\d", "a",
  40           Reject(0, 1));
  41 searcher!(searcher_two_adjacent_matches, r"\d", "56",
  42           Match(0, 1), Match(1, 2));
  43 searcher!(searcher_two_non_adjacent_matches, r"\d", "5a6",
  44           Match(0, 1), Reject(1, 2), Match(2, 3));
  45 searcher!(searcher_reject_first, r"\d", "a6",
  46           Reject(0, 1), Match(1, 2));
  47 searcher!(searcher_one_zero_length_matches, r"\d*", "a1b2",
  48           Match(0, 0),  // ^
  49           Reject(0, 1), // a
  50           Match(1, 2),  // a1
  51           Reject(2, 3), // a1b
  52           Match(3, 4),  // a1b2
  53 );
  54 searcher!(searcher_many_zero_length_matches, r"\d*", "a1bbb2",
  55           Match(0, 0),  // ^
  56           Reject(0, 1), // a
  57           Match(1, 2),  // a1
  58           Reject(2, 3), // a1b
  59           Match(3, 3),  // a1bb
  60           Reject(3, 4), // a1bb
  61           Match(4, 4),  // a1bbb
  62           Reject(4, 5), // a1bbb
  63           Match(5, 6),  // a1bbba
  64 );
  65 searcher!(searcher_unicode, r".+?", "Ⅰ1Ⅱ2",
  66           Match(0, 3), Match(3, 4), Match(4, 7), Match(7, 8));