How to stub view model in ui5? - sapui5

Question

I'm new to qunit + sinon.js, I want to write a unit test for function onMultiSelectPress, so I need to mock:
this.myController._oList
this.myController.getResourceBundle()
this.myController.getModel("masterView")
Right?
I'm stuck at get a stub for getModel("masterView"), any suggestion?
onInit : function () {
var oList = this.byId("list"),
oViewModel = this._createViewModel();
this._oList = oList;
this.setModel(oViewModel, "masterView");
},
_createViewModel : function() {
return new JSONModel({
isFilterBarVisible: false,
filterBarLabel: "",
delay: 0,
title: this.getResourceBundle().getText("masterTitleCount", [0]),
noDataText: this.getResourceBundle().getText("masterListNoDataText"),
sortBy: "Name",
groupBy: "None",
listMode: "SingleSelectMaster",
showDeleteButton: false
});
},
getModel : function (sName) {
return this.getView().getModel(sName);
},
onMultiSelectPress : function () {
var oMasterViewModel = this.getModel("masterView");
switch(this._oList.getMode()) {
case "MultiSelect":
oMasterViewModel.setProperty("/listMode", "SingleSelectMaster");
oMasterViewModel.setProperty("/showDeleteButton", false);
break;
case "SingleSelectMaster":
oMasterViewModel.setProperty("/listMode", "MultiSelect");
oMasterViewModel.setProperty("/showDeleteButton", true);
break;
}
},

Answer 1

Add a oViewStub in beforeEach， and set an empty JSON model using for testing.
QUnit.module("MasterController", {
beforeEach: function() {
this.oMasterController = new MasterController();
this.models = {};
var oViewStub = {
setModel: function(model, name) {
this.models[name] = model;
}.bind(this),
getModel: function(name) {
return this.models[name];
}.bind(this)
};
sinon.stub(Controller.prototype, "getView").returns(oViewStub);
},
afterEach: function() {
this.oMasterController.destroy();
jQuery.each(this.models, function(i, model) {
model.destroy();
});
Controller.prototype.getView.restore();
}
});
QUnit.test("test onMultiSelectPress() ", function(assert) {
var oMasterController = this.oMasterController;
var oModel = new JSONModel();
oMasterController.setModel(oModel, "masterView");
var oMasterViewModel = oMasterController.getModel("masterView");
oMasterController._oList = new sap.m.List();
sinon.stub(oMasterController._oList, "getMode").returns("MultiSelect");
oMasterController.onMultiSelectPress();
assert.strictEqual(oMasterViewModel.getProperty("/listMode"), "SingleSelectMaster", "Did change list mode to SingleSelectMaster");
assert.strictEqual(oMasterViewModel.getProperty("/showDeleteButton"), false, "Did hide the delete button");
oMasterController._oList.getMode.restore();
sinon.stub(oMasterController._oList, "getMode").returns("SingleSelectMaster");
oMasterController.onMultiSelectPress();
assert.strictEqual(oMasterViewModel.getProperty("/listMode"), "MultiSelect", "Did change list mode to MultiSelect");
assert.strictEqual(oMasterViewModel.getProperty("/showDeleteButton"), true, "Did show the delete button");
oMasterController._oList.destroy();
});