Cover health log trace selection

src/bin/dosh-client.rs

@@ -11007,6 +11007,36 @@ mod tests {
         assert_eq!(report.reconnect_none_events, 1);
     }
 
+    #[test]
+    fn trace_report_prefers_newer_health_log_over_stale_trace_file() {
+        let dir = tempfile::tempdir().unwrap();
+        let root = dir.path().join("trace");
+        let stale_trace = root.join("client-palav-1-1.log");
+        let health = root.join("health.log");
+        fs::create_dir_all(&root).unwrap();
+        fs::write(
+            &stale_trace,
+            "ts_ms=10 pid=1 event=client.start version=old\n",
+        )
+        .unwrap();
+        std::thread::sleep(Duration::from_millis(20));
+        fs::write(
+            &health,
+            concat!(
+                "ts_ms=20 pid=2 event=client.start version=new\n",
+                "ts_ms=21 pid=2 event=client.reconnect_none\n",
+            ),
+        )
+        .unwrap();
+
+        let selected = newest_client_trace_path_from(&root, Some(health.clone()))
+            .unwrap()
+            .expect("newest client trace");
+        assert_eq!(selected, health);
+        let report = summarize_trace_file(&selected, 10).unwrap();
+        assert_eq!(report.reconnect_none_events, 1);
+    }
+
     #[test]
     fn health_log_start_markers_only_for_connect_runs() {
         assert!(should_health_log_client_start(None));