main_test.js

var mockedSetFunction, mockedFindFunction, setMockObject, findMockObject;
module("Todos.main", {
  setup: function() {
    mockedSetFunction = Todos.tasksController.set; //ADDED THIS
    setMockObject = CoreTest.stub('Todos.tasksController.set', function() { return YES; }); //ADDED THIS
    Todos.tasksController.set = setMockObject; //ADDED THIS

    mockedFindFunction = Todos.store.find;
    findMockObject = CoreTest.stub('Todos.store.find', function() { return YES; });
    Todos.store.find = findMockObject;
    Todos.main();
  },

  teardown: function() {
    Todos.getPath('mainPage.mainPane').remove();
    Todos.tasksController.set = mockedSetFunction;//ADDED THIS
    Todos.store.find = mockedFindFunction;
  }
});

test("setup finding tasks", function() {
  equals(findMockObject.callCount, 1, "Should delegate to the store to find the tasks");
});

test("setup tasksController content", function() {
  equals(setMockObject.callCount, 1, "Should delegate to the tasksController to setup content"); //ADDED THIS
});