Lower bound for query delay to 500ms

1 files changed, 16 insertions, 0 deletions

diff --git a/rust/src/web.rs b/rust/src/web.rs
index b9bab27..291801a 100644
--- a/rust/src/web.rs
+++ b/rust/src/web.rs
@@ -148,6 +148,9 @@ impl Client {
                 if actual == *expected {
                     self.grade += 1;
                     self.delay = Duration::from_secs_f64(self.delay.as_secs_f64() * 0.8);
+                    if self.delay.as_millis() < 500 {
+                        self.delay = Duration::from_millis(500);
+                    }
                     TestResult::TestSucceeded
                 } else {
                     self.delay = Duration::from_secs_f64(self.delay.as_secs_f64() * 1.2);
@@ -739,4 +742,17 @@ mod app_tests {
 
         assert!(delay_before > client.time_to_next_test());
     }
+
+    #[test]
+    async fn client_decreases_delay_to_minimum_of_500ms() {
+        let mut client = client();
+        let expected = "1".to_string();
+        let response = Ok("1".to_string());
+
+        for _ in 0..100 {
+            client.check_result(&expected, &response);
+        }
+
+        assert_eq!(Duration::from_millis(500), client.time_to_next_test());
+    }
 }