rt_basic_throttling: temp: display elapsed to investigate CI failure

tokio/tests/rt_basic_throttling.rs

@@ -10,6 +10,25 @@ use std::time::{Duration, Instant};
 
 const MAX_THROTTLING: Duration = Duration::from_millis(100);
 
+// One time frame duration
+//
+// Depending on when the `delay` is created, it might be fired either:
+//
+// - at the beginning of time frame tf2
+//
+//      tf1   tf2   tf3
+//    |--:--|--:--|--:--|...
+//      ^---x
+//      <-dur->
+//
+//
+// - or, at the beginning of tme frame tf3
+//
+//      tf1   tf2   tf3
+//    |--:--|--:--|--:--|...
+//        ^-------x
+//        <-dur->
+
 #[test]
 fn delay_at_root_one_time_frame() {
     let mut rt = rt();
@@ -27,7 +46,9 @@ fn delay_at_root_one_time_frame() {
     assert!(elapsed + (MAX_THROTTLING / 2) >= dur);
     // delay is created during the first time frame
     // and must be fired at the beginning of the next time frame
-    assert!(elapsed < dur + MAX_THROTTLING);
+    // FIXME: temp.: display elapsed in CI, restore proper test afterward
+    //assert!(elapsed < dur + MAX_THROTTLING);
+    assert_eq!(elapsed, dur + MAX_THROTTLING);
 }
 
 #[test]
@@ -53,9 +74,29 @@ fn delay_in_spawn_one_time_frame() {
     assert!(elapsed + (MAX_THROTTLING / 2) >= dur);
     // delay is created during the first time frame
     // and must be fired at the beginning of the next time frame
-    assert!(elapsed < dur + MAX_THROTTLING);
+    // FIXME: temp.: display elapsed in CI, restore proper test afterward
+    //assert!(elapsed < dur + MAX_THROTTLING);
+    assert_eq!(elapsed, dur + MAX_THROTTLING);
 }
 
+// Two time frames duration
+//
+// Depending on when the `delay` is created, it might be fired either:
+//
+// - at the beginning of time frame tf3
+//
+//      tf1   tf2   tf3   tf4
+//    |--:--|--:--|--:--|--:--|...
+//      ^---------x
+//      <----dur---->
+//
+// - or, at the beginning of tme frame tf4
+//
+//      tf1   tf2   tf3   tf4
+//    |--:--|--:--|--:--|--:--|...
+//        ^-------------x
+//        <----dur---->
+
 #[test]
 fn delay_at_root_two_time_frames() {
     let mut rt = rt();
@@ -73,7 +114,9 @@ fn delay_at_root_two_time_frames() {
     assert!(elapsed + (MAX_THROTTLING / 2) >= dur);
     // delay is created during the first time frame
     // and must be fired after the end of next time frame
-    assert!(elapsed < dur + MAX_THROTTLING);
+    // FIXME: temp.: display elapsed in CI, restore proper test afterward
+    //assert!(elapsed < dur + MAX_THROTTLING);
+    assert_eq!(elapsed, dur + MAX_THROTTLING);
 }
 
 #[test]
@@ -99,7 +142,9 @@ fn delay_in_spawn_two_time_frames() {
     assert!(elapsed + (MAX_THROTTLING / 2) >= dur);
     // delay is created during the first time frame
     // and must be fired after the end of next time frame
-    assert!(elapsed < dur + MAX_THROTTLING);
+    // FIXME: temp.: display elapsed in CI, restore proper test afterward
+    //assert!(elapsed < dur + MAX_THROTTLING);
+    assert_eq!(elapsed, dur + MAX_THROTTLING);
 }
 
 fn rt() -> Runtime {