1 files changed, 12 insertions, 0 deletions
diff --git a/tests/lib.rs b/tests/lib.rs
index da8516d..d38e3e3 100644
--- a/tests/lib.rs
+++ b/tests/lib.rs
@@ -1,6 +1,7 @@
 extern crate matasano;
 extern crate rustc_serialize as serialize;
 extern crate rand;
+extern crate time;
 
 use std::ascii::AsciiExt;
 use std::borrow::ToOwned;
@@ -475,6 +476,17 @@ fn problem_21 () {
 }
 
 #[test]
+fn problem_22 () {
+    // std::thread::sleep_ms(rand::thread_rng().gen_range(40, 1000) * 1000);
+    let seed = time::now().to_timespec().sec as u32;
+    let mut mt = matasano::MersenneTwister::from_seed(seed);
+    // std::thread::sleep_ms(rand::thread_rng().gen_range(40, 1000) * 1000);
+    let output: u32 = mt.gen();
+    let got = matasano::recover_mersenne_twister_seed_from_time(output).unwrap();
+    assert_eq!(got, seed);
+}
+
+#[test]
 fn problem_23 () {
     let mut mt: matasano::MersenneTwister = rand::thread_rng().gen();
     let outputs: Vec<u32> = mt.gen_iter().take(624).collect();