I was running the automation in 4.0.X versions and most of the time getApplicationContext() was returning null context. Not the answer you're looking for? To learn more, see our tips on writing great answers. VS "I don't like it raining.". you can find more details here How to access resources in Android Unittest? Basically I want to test my view model class which performs network call. I tried out 4 options that are mentioned here How can we access context of an application in Robolectric? Indian Constitution - What is the Genesis of this statement? " What's going on? If you want to learn more about room there is this code lab. As you can see I tried two ways to get Context (check the commented line in above class) and both failed the same way. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. So my code which retrieves application context adapts for this case also, see, I need application and with your code i get this error: android.app.ContextImpl cannot be cast to android.app.Application, Accessing application context from TestSuite in Setup() before calling getActivity(), github.com/andstatus/andstatus/blob/master/src/org/andstatus/, https://developer.android.com/training/testing/integration-testing/index.html, Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Android JUnit4 Testing - Where to get Context from? Hello, Is there a way to get either the Android's context or resources to use for a unit test? Extreme amenability of topological groups and invariant means. How can I get context of test application itself in ApplicationTestCase? Thanks for contributing an answer to Stack Overflow! Insufficient travel insurance to cover the massive medical expenses for a visitor to US? Making statements based on opinion; back them up with references or personal experience. Testing Quality; Plan for app quality and align with Play store guidelines. Unit tests are the fundamental tests in your app testing strategy. Could entrained air be used to increase rocket efficiency, like a bypass fan? The problem is that I cannot get the context or the activity, is possible? Not the answer you're looking for? Is it possible to design a compact antenna for detecting the presence of 50 Hz mains voltage at very short range? Making statements based on opinion; back them up with references or personal experience. View.getContext() returns null after constructor View(context) in a JUnit test, Android JUnit test with Context.getApplicationContext(), Unit testing viewmodel in android using mockito MVVM pattern, How to mock Application class to unit test ViewModel, How to use 'application object' in androidTest cases? You can have just one constructor that takes a Context, you don't really need two. But, if you look a the source code of AndroidTestCase, it looks like you need to set a Context yourself: Source: http://alvinalexander.com/java/jwarehouse/android/core/java/android/test/AndroidTestCase.java.shtml, With the Android Testing Support Library, you can. Asking for help, clarification, or responding to other answers. How to get the context from Unit Test in android. :|, This is not so simple or maybe things have changed: I found out that this.getInstrumentation().getTargetContext() returns exactly my application context (I know this for sure because I have custom "MyApplication" class) AND .getApplicationContext() returns null. Asking for help, clarification, or responding to other answers. What is the procedure to develop a new force field for molecular simulation? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Get one of our Figma kits for Android, Material Design, or Wear OS, and start designing your app's UI today. Making statements based on opinion; back them up with references or personal experience. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Why are mountain bike tires rated for so much lower pressure than road bikes? What maths knowledge is required for a lab-based (molecular and cell biology) PhD? I'm trying to run similar tests, and it always return null for me. Mocking SQLite-Database while testing Activity with Robolectric, How to write Robolectric (2.3) test using database, Use mock db when testing with Robolectric and ORMLite. What is pressure energy in a closed system? Tests can be divided into three. Here is a recent way to setup (unit) instrumentation tests. Considering that use-case, is it necessary or better to still provide the whole application object instead just the component or function that is needed/used? Diagonalizing selfadjoint operator on core domain. Is there a way to get a Context object in a class extending TestCase? Using getResources() in non-activity class, Implicit vs Explicit Intent in Android ( startActivity(intent) crashes ), getApplicationContext() returns null in Application class, Cardview become inverted or black with white text, Can't getApplicationContext. Read more Spring Boot Error ApplicationContextException @peceps Full Ack - but thats just how it is and I dont like it neither ;), Worked perfectly for me and I load assets using Context either of AndroidTestCase via this method, or ActivityInstrumentationTestCase2.getInstrumentation ().getContext () then getResources ().getAssets (). Am also extending the test suite class with the ActivityInstrumentationTestCase2 class. Basically I found several webpages that claimed that you can infact test SQLite with robolectric, like, But anyways, I have somehow the empression that testing the database with Unit test for my application is not worth the effort at all. Path of the spring configuration xml files. How to get the activity or application context in AndroidTestCase, Getting a Context for use in AndroidTestCase when class under test is not an activity. Asking for help, clarification, or responding to other answers. Share. If I make a second constructor which accepts the Service as a parameter and uses service.getApplicationContext? To learn more, see our tips on writing great answers. Runtime Error java.lang.IllegalStateException: No instrumentation registered! That seems promising as well per Joe Birch's sample linked above. But Google's own Android Javadoc refers to this: I have replaced the following line of code: Although the context resolves properly, it doesn't seem to be the same context as the activity's. Semantics of the `:` (colon) function in Bash when used in a pipe? Assume 1) your test is instrumentation test 2) you are using subclass of Application - say, MyApplication. 'Union of India' should be distinguished from the expression 'territory of India' ". By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Any time you need the application context, just get it from App.context. Why wouldn't a plane start its take-off run from the very beginning of the runway to keep the option to utilize the full runway if necessary? Does anyone know how can you get the context of the Test project in Android junit test case (extends AndroidTestCase). android determine if activity context or application context, Get Current Activity Context in a non activity class, Android get context from non Activity Class. To get access to the context before getActivity() has been called you need to call this function: With the newer UI testing framework getInstrumentation() is no longer available. I can just test the database by looking into the changes of the database. How can we access context of an application in Robolectric? Finally, it observes the resulting behavior. How to get the context from Unit Test in android, Accessing Application Context in Core Java module inside for JUnit test in Android app. I have an Activity that pulls an object from an Application extended class (application context) from within the OnCreate() method. is not same as this.getInstrumentation().getTargetContext(). And error pointed to the place where I create Context object. 1. I have adapted yuku's answer with a non static direct context reference. How do you get hold of an Android Context for a Junit test from a Java Project? In the test class access context using the below snippet. supposed you want to mock the interface that being implemented by the Application class. ApplicationProvider.getApplicationContext(). when you have Vim mapped to always print two? I have a similar issue and isn't the whole point of "AndroidTestCase" to be able to test an activity-less class/project? Why wouldn't a plane start its take-off run from the very beginning of the runway to keep the option to utilize the full runway if necessary? mean? So it should not be changed for the whole application process. How can I shave a sheet of plywood into a wedge shim? Thanks for contributing an answer to Stack Overflow! VS "I don't like it raining.". I know, before even implement that this problem occurred. You can call the static method for the Context: More details can be found here: Thanks for contributing an answer to Stack Overflow! Many of the Android library's classes do not function when included as part of a unit test. But I honestly suggest that you put on your todolist to learn it.. it is really easy, clean and easy to test. rev2023.6.2.43474. Is there a faster algorithm for max(ctz(x), ctz(y))? Lilypond (v2.24) macro delivers unexpected results, Solana SMS 500 Error: Unable to resolve module with Metaplex SDK and Project Serum Anchor. How can an accidental cat scratch break skin but not damage clothes? It uses of the "Context" (passed as a parameter in the library constructor), so I shouldn't have to use any activity if I understand correctly. Yes I did, did not work. mean? How can I get the application context from an Android Service? What if the numbers and words I wrote on my check don't match? In Android there are two types of unit tests: Instrumented: they are slow, only run on a real device or an emulator and live in the app/src/androidTest folder by default Local or. There's new approach with Android Testing Support Library (currently androidx.test:runner:1.1.1). In this sample, my full application package name is hypersoft.systems.android.starbox. Local Unit Test class : import android.content.Context import androidx.test.core.app.ApplicationProvider import org.junit.Test class .
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