doTest = function( signal ) {

    // FAILING TEST
    // See below:

    // Test replication with getLastError

    // Replica set testing API
    // Create a new replica set test. Specify set name and the number of nodes you want.
    var replTest = new ReplSetTest( {name: 'testSet', nodes: 3} );

    // call startSet() to start each mongod in the replica set
    // this returns a list of nodes
    var nodes = replTest.startSet();

    // Call initiate() to send the replSetInitiate command
    // This will wait for initiation
    replTest.initiate();

    // Call getMaster to return a reference to the node that's been
    // elected master.
    var master = replTest.getMaster();

    // Wait for replication to a single node
    master.getDB("test").bar.insert({n: 1});

    // Wait for initial sync
    replTest.awaitReplication();

    var slaves = replTest.liveNodes.slaves;
    slaves.forEach(function(slave) { slave.setSlaveOk(); });

    var testDB = "repl-test";

    var callGetLastError = function(w, timeout, db) {
        var result = master.getDB(db).runCommand({getlasterror: 1, w: w, wtimeout: timeout});
        printjson( result );
        assert( result['ok'] == 1, "getLastError with w=" + w + " failed");
    }

    // Test getlasterror with a simple insert
    // TEST FAILS HERE
    master.getDB(testDB).foo.insert({n: 1});
    callGetLastError(3, 60000, testDB);

    m1 = master.getDB(testDB).foo.findOne({n: 1});
    printjson( m1 );
    assert( m1['n'] == 1 , "Failed to save to master");

    var s0 = slaves[0].getDB(testDB).foo.findOne({n: 1});
    assert( s0['n'] == 1 , "Failed to replicate to slave 0");

    var s1 = slaves[1].getDB(testDB).foo.findOne({n: 1});
    assert( s1['n'] == 1 , "Failed to replicate to slave 1");


    // Test getlasterror with large insert
    print("**** Try inserting many records ****")
    bigData = new Array(2000).toString()
    for(var n=0; n<1000; n++) {
      master.getDB(testDB).baz.insert({n: n, data: bigData});
    }
    callGetLastError(3, 60000, testDB);

    var verifyReplication = function(nodeName, collection) {
       data = collection.findOne({n: 1});
       assert( data['n'] == 1 , "Failed to save to " + nodeName);
       data = collection.findOne({n: 999});
       assert( data['n'] == 999 , "Failed to save to " + nodeName);
    }

    verifyReplication("master", master.getDB(testDB).baz);
    verifyReplication("slave 0", slaves[0].getDB(testDB).baz);
    verifyReplication("slave 1", slaves[1].getDB(testDB).baz);

    replTest.stopSet( signal );
}

// doTest( 15 );