Published in stepstone-tech-blog·Aug 15, 2019The curious case of RxJava Disposables A.K.A. what happens when you dispose a DisposableIn RxJava 2, there’s this concept of Disposables. They’re useful when e.g. you make a long-running HTTP request, but as the request is still in progress you are no longer interested in the results of that request. This might look like this in code:Rxjava7 min read
Published in stepstone-tech-blog·Jul 18, 2019Using Bitrise Continuous Integration for Android UI testsAt StepStone, we’ve been using instrumentation tests to add that extra layer of protection in our apps for about 3 years now. While writing this kind of tests isn’t rocket science, having a stable & efficient CI environment is a different story… In this article I would like to present…Continuous Integration8 min read
Published in stepstone-tech-blog·Jun 26, 2019How to debug freezing JUnit testsRecently, when writing integration tests with Robolectric on Android I came across a situation where, at some point, one of my tests would freeze for about 10 minutes when it was executed on a CI machine. This was a very strange behaviour as I didn’t change the test logic nor…Android5 min read
Published in stepstone-tech-blog·Jun 11, 2019Better tests with AndroidX’s ActivityScenario in Kotlin — Part 1With the rise of AndroidX Test library came a unified approach for writing Robolectric and instrumentation tests. Previously, to manage Activity lifecycle we had to use an ActivityTestRule in Android Test Support Library and an ActivityController in Robolectric. Now, there’s a single API for that called ActivityScenario. …Android3 min read
Apr 13, 2019AndroidX Navigation with Dagger 2 & FragmentFactoryInjecting dependencies into Fragment classes has always been less than ideal (to say the least) when compared to other “regular” classes. With Dagger 2 in Kotlin, you would rather prefer to inject it via a constructor so that the dependencies are stored as private properties like this: but had…Android App Development4 min read
Published in stepstone-tech-blog·Mar 21, 2019Taming the UI test monsterJust starting with instrumentation tests on Android? Or maybe you’ve written lots of them, but for some reason they keep on failing from time to time and it’s starting to REALLY get on your nerves? Hopefully the tips below will make your life easier (TL;DR section at the very bottom…Android8 min read
Published in stepstone-tech-blog·Sep 27, 2018Modularizing your flavored Android projectIntro There are many reasons why you should at least consider splitting your monolithic application into smaller modules. You might be seeking for build time improvements, Google Play Instant support (previously known as Instant Apps) or better separation of concerns. I’m not going to go into details about how to actually…Android3 min read
Published in stepstone-tech-blog·Jun 18, 2018How to capture screenshots for failed UI testsIf you have any kind of tests then at some point they’re bound to fail. And usually it’s a good thing as they will detect bugs in your app 😃 The thing with Android instrumentation tests is that sometimes even though you have the stack-trace of what failed, it might…Android6 min read
Published in stepstone-tech-blog·Jun 6, 2018Clean Architecture with reactive use casesThis article focuses on different types of use cases/interactors which we are using in our Android app. Use cases play an important role in Clean Architecture and I hope you’ll find our implementation useful! TL;DR Show me the code! stepstone-tech/ReactiveUseCasesSample Contribute to ReactiveUseCasesSample development by creating an account on GitHub.github.com A few notes before you start… As this is just a sample app some stuff is…Android6 min read
Published in stepstone-tech-blog·Mar 15, 2018Android Test Orchestrator unmaskedIntro Recently, we started using Android Test Orchestrator at Stepstone to help us with our instrumentation tests. In this article I would like to explain what it actually is, what issues it solves and how to use it. …Android6 min read
