android studio 2.2.3 final variable initialization

Given the presenter has requested data and somehow the data source has returned error, I want to verify if the view receives the proper feedback.Given the presenter has requested data and its data source has returned the characters data successfully, I want to verify if the view receives it.In this tutorial, we will focus only on two test cases: Therefore, all values are set at object instantiation by its constructor.ĬharactersModel.java: public class CharacterModel Presenter testsĮven without the view implementation (the Activity in this case) we can already test the presenter.

For now, I will make all attributes as public and final instead of creating getter methods for each of them, because I intend to write a second part of this article where I explain how to validate models using reflection. My suggestion is to use immutable models, given its advantages. The next step will be the creation of our models that will represent the response returned from the characters request. Mockito: besides its mocking feature, this framework will be used to verify interactions (i.e.: method calls) of classes.We will use some of its annotations and assertion methods. Gson: the JSON deserializer we will use to transform the HTTP response into java models.I have chosen Retrofit because of its RxJava adapter that makes it easier to convert an HTTP response into an Observable. Retrofit: the HTTP Rest Client we will use to perform the API requests.RxAndroid: library that brings Reactive Extensions to Android.

I will personally choose the minimum API of Android 4.0.3 (15) for this tutorial.įollowing below are all the external dependencies needed at the adle file and a brief description of each one: compile 'io.reactivex:rxandroid:1.2.1' compile '2:retrofit:2.1.0' compile '2:converter-gson:2.1.0' compile '2:adapter-rxjava:2.1.0' testCompile 'junit:junit:4.12' testCompile 'org.mockito:mockito-core:2.6.8' On Android Studio (I’m using the version 2.2.3 currently) start a basic project with an empty activity. If you want to see the entire code it's at this github repository. This tutorial requires a previous knowledge of Android development, Unit Tests and Reactive programming. We will build an Android app using the free Star Wars API that displays characters data from the movie. In this article I want to show you a tutorial on how I decided to test the API Request layer using RxAndroid, Retrofit, Mockito and the Model View Presenter (MVP) architecture.

Android studio 2.2.3 final variable initialization