In this unit, we'll go through the tools involved in a professional Ember.js development environment, including ember-cli, the ember inspector and more! Then, we'll take a look at the various parts of an ember-cli project, and cover the various micro-libraries that serve as Ember's foundation.

One of the important ideas at the core of Ember is URL-driven application state. Great state management is what makes the difference between single page apps that delight users, and those that frustrate them.

Nearly all of Ember's important types extend from a core Ember.Object class, which we'll study, and compare to JavaScript's Object and Class concepts.

Some types of ember objects, like Routes, Controllers and Components can handle user interactions by way of actions. We'll cover strategies and best practices for action handling, including:

• the {{action}} helper
• closure actions
• action bubbling
• the {{route action}} helper
• the {{mut}} helper

Components play an increasingly central role in modern web app development, as a mean for defining encapsulated pieces of UI and having well-defined contracts with the outside world.

A great testing story is a critical part of any serious tech stack, and the Ember community has put a lot of time into making this a great strength of the framework. We'll cover examples and best practices in areas of :

• Unit testing
• Component integration testing
• Acceptance testing
• Mocking data
• Writing sustainable tests