Defining modules and using them immediately with RequireJS

I'm writing some tests for an application which is using RequireJS. Because of how the application works, it expects to get some classes via calling require. So, for testing, I have some dummy classes, but I don't want to have to put them into individual files just for this test. I'd much prefer to just define() them manually inside my test file like so:

define('test/foo', function () {
    return "foo";
});

define('test/bar', function () {
    return "bar";
});

test("...", function () {
    MyApp.load("test/foo"); // <-- internally, it calls require('test/foo')
});

The issue here is that the evaluation of those modules is delayed until a script onload event is fired.

From require.js around line 1600:

//Always save off evaluating the def call until the script onload handler.
//This allows multiple modules to be in a file without prematurely
//tracing dependencies, and allows for anonymous module support,
//where the module name is not known until the script onload event
//occurs. If no context, use the global queue, and get it processed
//in the onscript load callback.
(context ? context.defQueue : globalDefQueue).push([name, deps, callback]);

Is there some way I can manually trigger the queue to be evaluated?