Change rate limiter test that sporadically fails on slow machines

Change a test where the bucket would completely refill 1000 tokens in
just 1ms that fails on slow machines when run under kcov, where
the rate at which the tokenbucket refills is faster than it takes
the instrumented code to validate.

Signed-off-by: Adrian Catangiu <[email protected]>

Author: acatangiu

fc_util/src/ratelimiter/mod.rs

@@ -363,16 +363,16 @@ mod tests {
 
     #[test]
     fn test_token_bucket_reduce() {
-        // token bucket with capacity 1000 and refill time of 1 millisecond
+        // token bucket with capacity 1000 and refill time of 1000 milliseconds
+        // allowing rate of 1 token/ms
         let capacity = 1000;
-        let refill_ms = 1;
-        let refill_duration = Duration::from_millis(refill_ms);
+        let refill_ms = 1000;
         let mut tb = TokenBucket::new(capacity, refill_ms as u64);
 
         assert!(tb.reduce(123));
         assert_eq!(tb.get_current_budget(), capacity - 123);
 
-        thread::sleep(refill_duration);
+        thread::sleep(Duration::from_millis(123));
         assert!(tb.reduce(1));
         assert_eq!(tb.get_current_budget(), capacity - 1);
         assert!(tb.reduce(100));