SERVER-43210 Allow time for cursors to indicate that a session has been killed in the killSessions helper

(cherry picked from commit c4162d244b9a031b077cc3694f8585288e275ff6)

1 files changed, 3 insertions, 3 deletions

diff --git a/jstests/libs/kill_sessions.js b/jstests/libs/kill_sessions.js
index b69d19ef082..4941274c02d 100644
--- a/jstests/libs/kill_sessions.js
+++ b/jstests/libs/kill_sessions.js
@@ -183,9 +183,9 @@ var _kill_sessions_api_module = (function() {
         this.visit(function(client) {
             var db = client.getDB("admin");
             db.setSlaveOk();
-            var cursors = db.aggregate([{"$listLocalCursors": {}}]).toArray();
-            cursors.forEach(function(cursor) {
-                assert(!cursor.lsid);
+            assert.soon(() => {
+                let cursors = db.aggregate([{"$listLocalCursors": {}}]).toArray();
+                return cursors.every(cursor => !cursor.lsid);
             });
         });
     };