text: (function() {
      "use strict";
  
      // This test makes assertions about the number of logical session records.
      TestData.disableImplicitSessions = true;
  
      var refresh = {refreshLogicalSessionCacheNow: 1};
      var startSession = {startSession: 1};
  
      // Start up a replica set.
      var dbName = "config";
  
      var replTest = new ReplSetTest({name: 'refresh', nodes: 3});
      var nodes = replTest.startSet();
  
      replTest.initiate();
      var primary = replTest.getPrimary();
  
      replTest.awaitSecondaryNodes();
      var server2 = replTest._slaves[0];
      var server3 = replTest._slaves[1];
  
      var db1 = primary.getDB(dbName);
      var db2 = server2.getDB(dbName);
      var db3 = server3.getDB(dbName);
  
      var res;
  
      // Trigger an initial refresh on all members, as a sanity check.
      res = db1.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
      res = db2.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
      res = db3.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
  
      // Connect to the primary and start a session.
      db1.runCommand(startSession);
      assert.commandWorked(res, "unable to start session");
  
      // That session should not be in db.system.sessions yet.
      assert.eq(db1.system.sessions.count(), 0, "should not have session records yet");
  
      // Connect to each replica set member and start a session.
      res = db2.runCommand(startSession);
      assert.commandWorked(res, "unable to start session");
      res = db3.runCommand(startSession);
      assert.commandWorked(res, "unable to start session");
  
      // Connect to a secondary and trigger a refresh.
      res = db2.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
  
      // Connect to the primary. The sessions collection here should have one record for the session
      // on the secondary.
      assert.eq(db1.system.sessions.count(), 1, "failed to refresh on the secondary");
  
      // Trigger a refresh on the primary. The sessions collection should now contain two records.
      res = db1.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
      assert.eq(
          db1.system.sessions.count(), 2, "should have two local session records after refresh");
  
      // Trigger another refresh on all members.
      res = db2.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
      res = db3.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
      res = db1.runCommand(refresh);
      assert.commandWorked(res, "failed to refresh");
  
      // The sessions collection on the primary should now contain all records.
      assert.eq(
          db1.system.sessions.count(), 3, "should have three local session records after refresh");
  
      // Stop the test.
      replTest.stopSet();
  })();
  