[pdm-devel] [PATCH proxmox-datacenter-manager v2 12/28] metric collection: add test for fetch_overdue

[Lukas Wagner]

This test ensure that the logic for fetching metrics from remotes which
are overdue for collection continues to work as expected.

Signed-off-by: Lukas Wagner <l.wagner at proxmox.com>
---
 .../src/metric_collection/collection_task.rs  | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/server/src/metric_collection/collection_task.rs b/server/src/metric_collection/collection_task.rs
index 2b4130fe..f1027ccd 100644
--- a/server/src/metric_collection/collection_task.rs
+++ b/server/src/metric_collection/collection_task.rs
@@ -632,4 +632,66 @@ pub(super) mod tests {
         drop(task);
         assert_eq!(handle.await.unwrap(), 2);
     }
+
+    #[tokio::test]
+    async fn test_fetch_overdue() {
+        // Arrange
+        test_init();
+
+        let (tx, rx) = tokio::sync::mpsc::channel(10);
+        let handle = tokio::task::spawn(fake_rrd_task(rx));
+
+        let settings = CollectionSettings {
+            collection_interval: Some(60),
+            ..Default::default()
+        };
+
+        let config = make_remote_config();
+
+        let state_file = NamedTempFile::new(get_create_options()).unwrap();
+        let mut state = MetricCollectionState::new(state_file.path().into(), get_create_options());
+
+        let now = proxmox_time::epoch_i64();
+
+        // This one should be fetched
+        state.set_status(
+            "pve-0-pass".into(),
+            RemoteStatus {
+                last_collection: Some(now - 35),
+                ..Default::default()
+            },
+        );
+        // This one should *not* be fetched
+        state.set_status(
+            "pve-1-pass".into(),
+            RemoteStatus {
+                last_collection: Some(now - 25),
+                ..Default::default()
+            },
+        );
+
+        let (_control_tx, control_rx) = tokio::sync::mpsc::channel(10);
+
+        let mut task = MetricCollectionTask {
+            state,
+            settings,
+            metric_data_tx: tx,
+            control_message_rx: control_rx,
+        };
+
+        let next_collection = Instant::now() + Duration::from_secs(30);
+
+        // Act
+        task.fetch_overdue(&config, next_collection).await;
+
+        // Assert
+        let status = task.state.get_status("pve-0-pass").unwrap();
+        assert!(status.last_collection.unwrap() - now >= 0);
+
+        let status = task.state.get_status("pve-1-pass").unwrap();
+        assert_eq!(status.last_collection.unwrap(), now - 25);
+
+        drop(task);
+        assert_eq!(handle.await.unwrap(), 1);
+    }
 }
-- 
2.39.5