In these months I have started to work on a new project based entirely on Jetpack Compose: a new world with new rules and also a new way to write UI tests. The purpose of this article is not to explain how to write tests, because about that there is…

In this article, we will talk about Kotlin Coroutines, more specifically, about Flow. Probably the best way to understand it is by using a sample, we will explain how to use it with Firebase Realtime Database. Before start is essential to make a small introduction: as you know Kotlin coroutines…

How to create a scheduled job (like a Unix Cron job) and execute it with the Google Firebase Functions. On this blog, you are used to reading articles about Android, Kotlin, JUnit, etc, but today I want to talk about: Cloud Functions and Cloud Scheduler, two services that you can…

It has been passed months since my last article on Kotlin coroutines lifecycle, and one year since an article about unit testing and mocking technique. Today I’m here to speak again about Unit Test focused on the mocking with the Kotlin library Mockk . In object-oriented programming, mock objects are…

How manage the Lifecycle of a Coroutine Job — I have just written an article about Kotlin Coroutines but now I want to go deep the topic of Coroutine Scope. What’s its lifecycle and the behavior of jobs. How use and test Kotlin Coroutines with Mockk library Create and test a Kotlin Coroutine inside an Android Project with ViewModelmedium.com The CoroutineScope and the Inheritance When we launch a coroutine we need a Context to run it: a CoroutineScope. This one works like a RXJava Scheduler…

In these article we will understand how implement the new Kotlin coroutines and how test them with MockK library. I use these code in an Android project, but the principles are generic for all Kotlin project. Dispatcher and CoroutineScope If you worked in past with RXJava you should understand the concept of Scheduler…

I love Kotlin, when i have started to write application with it i said, “wow cool”, it’s clean, it’s easy to read (sometimes 😁) and helps you to create a better code, but when i have started to write tests I encountered some problems. In this article i will help you…

How use ViewModelFactory with Multibindings. — From the past Google IO 2017 we having a new set of tools called Android Architecture Components, I have just spoken about one of them (Room) in a past article, today i want to speak about the ViewModel. Integrate Dagger 2 with Room Persistence Library in few lines During the Google IO 2017 was showed the Android Architecture Components, in this libraries set we can find Room, Room…medium.com

After Google I/O 2017 Kotlin is ufficially supported by Google, so in these months i have starting to code in Kotlin for work, the language is really cool, many feature are very useful, other strange, but allow you to have a clean code and easy to read. I don’t like your Null Point Exception The first thing…