Book Image

Learn QT 5

By : Nicholas Sherriff
Book Image

Learn QT 5

By: Nicholas Sherriff

Overview of this book

Qt is a mature and powerful framework for delivering sophisticated applications across a multitude of platforms. It has a rich history in the Linux world, is widely used in embedded devices, and has made great strides in the Mobile arena over the past few years. However, in the Microsoft Windows and Apple Mac OS X worlds, the dominance of C#/.NET and Objective-C/Cocoa means that Qt is often overlooked. This book demonstrates the power and flexibility of the Qt framework for desktop application development and shows how you can write your application once and deploy it to multiple operating systems. Build a complete real-world line of business (LOB) solution from scratch, with distinct C++ library, QML user interface, and QtTest-driven unit-test projects. This is a suite of essential techniques that cover the core requirements for most LOB applications and will empower you to progress from a blank page to shipped application.
Table of Contents (11 chapters)

Mocking

The unit tests we’ve written so far have all been pretty straightforward. While our Client class isn’t totally independent, its dependencies are all other data models and decorators that it can own and change at will. However, looking forward, we will want to persist client data in a database. Let's look at a few examples of how this can work and discuss how the design decisions we make impact the testability of the Client class.

Open up the scratchpad project and create a new header mocking.h file, where we’ll implement a dummy Client class to play around with.

mocking.h:

#ifndef MOCKING_H
#define MOCKING_H
#include <QDebug>
class Client { public: void save() { qDebug() << "Saving Client"; } };
#endif

In main.cpp, #include <mocking.h>, update the engine.load() line to load the default main.qml if...