1 files changed, 43 insertions, 0 deletions
diff --git a/jstests/auth/refresh_logical_session_cache_with_long_usernames.js b/jstests/auth/refresh_logical_session_cache_with_long_usernames.js
new file mode 100644
index 00000000000..d9bbed5324f
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+++ b/jstests/auth/refresh_logical_session_cache_with_long_usernames.js
@@ -0,0 +1,43 @@
+// Verifies that we've fixed SERVER-33158 by creating large user lsid refresh records (via large
+// usernames)
+
+(function() {
+    'use strict';
+
+    const mongod = MongoRunner.runMongod({auth: ""});
+
+    const refresh = {refreshLogicalSessionCacheNow: 1};
+    const startSession = {startSession: 1};
+
+    const admin = mongod.getDB('admin');
+    const db = mongod.getDB("test");
+    const config = mongod.getDB("config");
+
+    admin.createUser({user: 'admin', pwd: 'pass', roles: jsTest.adminUserRoles});
+    assert(admin.auth('admin', 'pass'));
+
+    const longUserName = "x".repeat(1000);
+
+    // Create a user with a long name, so that the refresh records have a chance to blow out the
+    // 16MB limit, if all the sessions are flushed in one batch
+    db.createUser({user: longUserName, pwd: 'pass', roles: jsTest.basicUserRoles});
+    admin.logout();
+
+    assert(db.auth(longUserName, 'pass'));
+
+    // 20k * 1k = 20mb which is greater than 16mb
+    const numSessions = 20000;
+    for (var i = 0; i < numSessions; i++) {
+        assert.commandWorked(admin.runCommand(startSession), "unable to start session");
+    }
+
+    assert.commandWorked(admin.runCommand(refresh), "failed to refresh");
+
+    // Make sure we actually flushed the sessions
+    assert.eq(numSessions,
+              config.system.sessions.aggregate([{'$listSessions': {}}, {'$count': "count"}])
+                  .next()
+                  .count);
+
+    MongoRunner.stopMongod(mongod);
+})();