android unit test get application context

576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. How strong is a strong tie splice to weight placed in it from above? 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. This way I do not have to implement all those test that are not worth the time according to my point of view - Be is displaying a toast or Accessing database, you use. Why can't you just use InstrumentationTestCase? As you can see I tried two ways to get Context (check the commented line in above class) and both failed the same way. JUnit: How to get context on a non activity testCase? The problem is that I cannot get the context or the activity, is possible? this.getInstrumentation ().getTargetContext ().getApplicationContext (); Although the context resolves properly, it doesn't seem to be the same context as the activity's. android To learn more, see our tips on writing great answers. I am trying to do an unit test for an android app and I need to get a string from res.string resources. Always use this.getInstrumentation().getTargetContext() to access the context of the application. In Your Activities and in fragments Class : Thanks for contributing an answer to Stack Overflow! Citing my unpublished master's thesis in the article that builds on top of it, Recovery on an ancient version of my TexStudio file. You need to write your test in androidTest package. To learn more, see our tips on writing great answers. . By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I used 2nd one and know it works, 1st one is my guess. What maths knowledge is required for a lab-based (molecular and cell biology) PhD? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, I just tried it and it worked! Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. You can use InstrumentationRegistry methods to get a Context: InstrumentationRegistry.getTargetContext() - provides the application Context of the target application. Mockito: How do I use getString with mockito? JUnit: How to get context on a non activity testCase? How do you get hold of an Android Context for a Junit test from a Java Project? 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. Semantics of the `:` (colon) function in Bash when used in a pipe? Noise cancels but variance sums - contradiction? Is Spider-Man the only Marvel character that has been represented as multiple non-human characters? 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. Getting context in AndroidTestCase or InstrumentationTestCase in Android Studio's Unit Test feature, Doubt in Arnold's "Mathematical Methods of Classical Mechanics", Chapter 2. Is there any evidence suggesting or refuting that Russian officials knowingly lied that Russia was not going to attack Ukraine? After a bit of digging I found: this.getInstrumentation().getTargetContext() and then cast it to the type of my Application extended class. 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. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. What does "Welcome to SeaWorld, kid!" With all this done, you can now import hypersoft.systems.android.Starbox, and in your code you can get the ApplicationContext by calling Starbox.instance.getApplicationContext(). Unit Testing in Android using Mockito therebootedcoder Read Discuss Most classes have dependencies, and methods frequently delegate work to other methods in other classes, which we refer to as class dependencies. Can't get TagSetDelayed to match LHS when the latter has a Hold attribute set. Example uses Mockito: Must run under a registering instrumentation. when you have Vim mapped to always print two? How strong is a strong tie splice to weight placed in it from above? I believe this is because the context returned by getContext () points to the instrumentation's context rather than that of your application / unit test. If this is in an instrumented test, then Robolectric is not needed. Create a class domain.company.pseudo.ApplicationName which extends android.app.Application. Doubt in Arnold's "Mathematical Methods of Classical Mechanics", Chapter 2. Improve this answer. See: Build local unit tests > Include framework dependencies - Android documentation, See: How to add Java 9 to Android Studio? Should convert 'k' and 't' sounds to 'g' and 'd' sounds when they follow 's' in a word for pronunciation? You can go for getApplicationContext() if you wanna get context of whole application. mean? Android Unit Testing - method to test returning null, How to read Android resource file values in unit testing. How can I get the application context from an Android Service? In my android application I have a constructor that uses: The activity is passed into the constructor as a parameter. kotlin - Room database error when unit testing, Android database testing - using Room.inMemoryDatabaseBuilder() passes exact same test that Room.databaseBuilder() does not. Your Update 3 made my first test work, but the second test in the class still failed. Is it possible to type a single quote/paren/etc. Why doesnt SpaceX sell Raptor engines commercially? Why is Bb8 better than Bc7 in this position? Android ApplicationTestCase using a MockContext, Getting a Context for use in AndroidTestCase when class under test is not an activity. I did some more research and discovered this for android.app.Application. Next step would be to create subclass of AndroidJUnitRunner, may be like this: Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Find centralized, trusted content and collaborate around the technologies you use most. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. What's going on? android unit test: clearing prefs before testing activity, Activity Unit testing using ActivityUnitTestCase. If you attempt to inject a Uri and add properties to it in your unit test, you'll be in for a hair-pulling session. Testing is an integral part of the app development process. what dependency AndroidJUnit4.class comes from? InstrumentationRegistry.getTargetContext(); Android JUnit4 Testing - Where to get Context from? Asking for help, clarification, or responding to other answers. What are good reasons to create a city/nation in which a government wouldn't let you leave, Extreme amenability of topological groups and invariant means. Can you identify this fighter from the silhouette? What's the purpose of a convex saw blade? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If I make a second constructor which accepts the Service as a parameter and uses service.getApplicationContext? Currently the problem I am encountering is obtaining a valid Context object to pass to my implementation of SQLiteOpenHelper. Why is Bb8 better than Bc7 in this position? Making statements based on opinion; back them up with references or personal experience. What's the purpose of a convex saw blade? The other answers are outdated. Keep in mind that you probably have to have your tests setup in an "Android Test Project" in Eclipse, since the tests will try to execute on the emulator (or real device). I got some of my old tests running with Android Studio 1.1.0's new unit test support feature. Making statements based on opinion; back them up with references or personal experience. What maths knowledge is required for a lab-based (molecular and cell biology) PhD? But I honestly suggest that you put on your todolist to learn it.. it is really easy, clean and easy to test. @IgorGanapolsky there are two APKs installed when running Android tests. You can check the android documentation, they have provided. Find centralized, trusted content and collaborate around the technologies you use most. How do I troubleshoot a zfs dataset that the server when the server can't agree if it's mounted or not? Is there a reason beyond protection from potential corruption to restrict a minister's ability to personally relieve and appoint civil servants? I know, before even implement that this problem occurred. InstrumentationRegistry.getContext() - provides the Context of this Instrumentations package. ditto on needing a more complete example. You will then have to create its subclass - say, TestMyApplication. This is to correct way to get the Context. It provides instructions on context the model can reference when generating a response, what it should and shouldn't answer, and how to format responses. Is there a way to get the current processes context from a library using some global object accessable in any process from a library so I can call context.getClassLoader()? Id be interested as to which approach is the better practice here. rev2023.6.2.43474. Is it possible for rockets to exist in a world that is only in the early stages of developing jet aircraft? Right now every time that you extend AndroidTestCase, there is mContext Context object that you can use. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. What to test on Android applications Your test should focus on the business logic of your application. Context needs to refer to something that extends Context such as an Activity or Application class. Recovery on an ancient version of my TexStudio file. Fundamentals Of Testing # A typical unit test contains three phases. Semantics of the `:` (colon) function in Bash when used in a pipe? You are mocking Application. The class that I want to test is a POJO class. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is there any evidence suggesting or refuting that Russian officials knowingly lied that Russia was not going to attack Ukraine? Could entrained air be used to increase rocket efficiency, like a bypass fan? What are some ways to check if a molecular simulation is running properly? For AndroidX use InstrumentationRegistry.getInstrumentation().getTargetContext() or InstrumentationRegistry.getInstrumentation().getContext(). Android: how to get Context when testing with ActivityInstrumentationTestCase2? Mocking a resource on Android instrumentation test, how to correctly unit test string with parameters, Mockito on Android, Context.getString(id) and NullPointerException. How can an accidental cat scratch break skin but not damage clothes? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Must run under registering instrumentation. I am writing my first Android database backend and I'm struggling to unit test the creation of my database. tx (note there is a typo in your class member). Now I got the problem that I need a context to create my SQLiteBridge. Ok, my tests are running fine this morning. How appropriate is it to post a tweet saying that I am looking for postdoc positions? Is it possible for rockets to exist in a world that is only in the early stages of developing jet aircraft? To be clear: I have a library (activity less) I'm trying to test. Not the answer you're looking for? 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. Connect and share knowledge within a single location that is structured and easy to search. How to get Context in unit test to create Room database in memory database object, Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Thanks for contributing an answer to Stack Overflow! AndroidTestCase to test Context and Assertions. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. MyService is just simple service which reads processName from application context (so app context must be there. Is it possible to design a compact antenna for detecting the presence of 50 Hz mains voltage at very short range? Basically I want to test my view model class which performs network call. I was running the automation in 4.0.X versions and most of the time getApplicationContext() was returning null context. There is a library that needs a class loader but is not itself an application but used in applications. If we just utilized JUnit to unit test these methods, our tests would likewise be dependent on them. What is pressure energy in a closed system? Note: The test is NOT instrumentation test. How to get the context from Unit Test in android, Accessing Application Context in Core Java module inside for JUnit test in Android app. Directory- app > src > test > java ExampleUnitTest.kt package app.coinverse If I put 'Mon' instead of context.getResources().getString(R.string.sInicialLunes)) or 'L' it work perfectly so, is possible to get the context or the activity in order to access to resource folder? Now I want to write my unit tests. Now, modify your AndroidManifest.xml tag to have the attribute android:name="hypersoft.systems.android.Starbox", and be sure the Starbox.java class file is located in the project component directory: android rather than starbox. I would like to do some Unit test in Android for SQLiteOpenHelper using Robolelectric. Feb 23, 2022 -- 2 Overview Testing has become a fundamental process of developing applications. Here is a recent way to setup (unit) instrumentation tests. Use the testImplementation function to indicate that they apply to the local test source set, and not the application: dependencies { // Required -- JUnit 4 framework testImplementation "junit:junit:$jUnitVersion" Extending IC sheaves across smooth normal crossing divisors. Can I trust my bikes frame after I was hit by a car if there's no visible cracking? Application is always initialized first whether your process runs, whether it's an activity, a service, or something else. 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. 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. How strong is a strong tie splice to weight placed in it from above? Living room light switches do not work during warm/hot weather. How to unit test a class that uses context? Is there any philosophical theory behind the concept of object in computer science? Why in a test class that extends AndroidTestCase, does getContext() return null? There's a better answer found here: [Using AndroidTestCase instead of a JUnit test][1] [1]: Finally an answer on how to use JUnit4 with InstrumentationTest. Yes. I can't because the activity's OnCreate() method depends on data being in the context already. ServiceTestRule This rule provides a simplified mechanism to launch your service before the tests and shut it down before and after. Extending IC sheaves across smooth normal crossing divisors. What happens if you've already found the item an old map leads to? jUnit 4 (and perhaps other versions of jUnit) and androidx use: Thanks for contributing an answer to Stack Overflow! By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. I will try your solution, thanks, Android mocking applicationcontext inside application, Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Theoretical Approaches to crack large files encrypted with AES, Diagonalizing selfadjoint operator on core domain. 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. Did an AI-enabled drone attack the human operator in a simulation environment? When running gradlew testDebug the tests are run, but all of the tests that require a Context fail because getContext (AndroidTestCase) / getInstrumentation.getContext() (InstrumentationTestCase) both return null. Solana SMS 500 Error: Unable to resolve module with Metaplex SDK and Project Serum Anchor. Source: https://stackoverflow.com/a/8870318/950427 and https://stackoverflow.com/a/16763196/950427, Source: https://stackoverflow.com/a/9820390/950427, Source: https://stackoverflow.com/a/14232913/950427. You can have just one constructor that takes a Context, you don't really need two. You need to mock it as well: Assume 1) your test is instrumentation test 2) you are using subclass of Application - say, MyApplication. Is it OK to pray any five decades of the Rosary or do they have to be in the specific set of mysteries? Thanks for contributing an answer to Stack Overflow! It may be in more than one process in the application. java.lang.IllegalStateException: No instrumentation registered! I can just test the database by looking into the changes of the database. JUnit Local Test - 'Unresolved reference: test', Android Studio: Cannot write to Shared Preferences in instrumented test, How to tell Junit/Mockito to wait for AndroidAnnotations to inject the dependenices. Overview; Exceptions. Finally, it observes the resulting behavior. Link to announcement. Thanks. How to get the context from Unit Test in android. This test class in test folder not in androidTest folder. This wouldn't be a unit test, but an integration test. I have an Activity that pulls an object from an Application extended class (application context) from within the OnCreate() method. Step 2: Add dependency to the build.gradle file and click "sync now" testImplementation "com.google.truth:truth:1..1" Connect and share knowledge within a single location that is structured and easy to search. Asking for help, clarification, or responding to other answers. And error pointed to the place where I create Context object. Return the context of the single, global Application object of the current process. In July 2022, did China have more nuclear weapons than Domino's Pizza locations? Or if you wanted to make sure that you are getting the application context, and not, say, an activity one, you can have your constructor take Application as a parameter which is a Context. this.getInstrumentation().getTargetContext().getApplicationContext() Can the use of flaps reduce the steady-state turn radius at a given airspeed and angle of bank? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Asking for help, clarification, or responding to other answers. And if you wanna learn more about its testing you can check it here. Can I trust my bikes frame after I was hit by a car if there's no visible cracking? I am trying to do an unit test for an android app and I need to get a string from res.string resources. You should use ApplicationTestCase or ServiceTestCase. By the way, can you update your question with the log from the crash/error? If we use this technique, could they take the method away in a later release (breaking our test code)? To learn more, see our tips on writing great answers. Testing SQLiteOpenHelper subclass with JUnit, Android instrumentation test errors due to com.google.android.gms.version meta data, Accessing application context from TestSuite in Setup() before calling getActivity(). Does the policy change for AI-generated content affect users who (want to) how can I mock the Context using Mockito and Robolectric? Diagonalizing selfadjoint operator on core domain. For local unit tests run on the JVM, Robolectric works. What maths knowledge is required for a lab-based (molecular and cell biology) PhD? how did you come to this idea or where did you read that, many times in unit test mock classes don't really do the job because they are fake but we to test something real, ApplicationProvider.getApplicationContext(), Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Diagonalizing selfadjoint operator on core domain. when you have Vim mapped to always print two? Kotlin updated example: Not the answer you're looking for? - StackOverflow. when you have Vim mapped to always print two? Is there a reason beyond protection from potential corruption to restrict a minister's ability to personally relieve and appoint civil servants? Diagonalizing selfadjoint operator on core domain. rev2023.6.2.43474. Why are mountain bike tires rated for so much lower pressure than road bikes? Android JUnit4 Testing - Where to get Context from? getInstrumentation().getContext() is now deprecated you should use this From looking at the docs, it seems like it should be able to provide you with a valid Context to pass to SQLiteOpenHelper. Is it possible to type a single quote/paren/etc. Use the InstrumentationRegistry to obtain the context. What is the procedure to develop a new force field for molecular simulation? How do you find the context of a UI test? Thank you @Sherlock, I guess that it was the correct answer as I have read but I needed one confirmation due to I am a beginner in Android. In order to get my target application context instead of the Instrumentation context. Is it possible to type a single quote/paren/etc. How do I stop my DatabaseHelper test adding to the apps actual database? Extreme amenability of topological groups and invariant means, Sound for when duct tape is being pulled off of a roll. You can bypass the @hide annotation using reflection. Can I also say: 'ich tut mir leid' instead of 'es tut mir leid'? Are all constructible from below sets parameter free definable? There's new approach with Android Testing Support Library (currently androidx.test:runner:1.1.1). How can I populate the context before an activity is started and have it available to that Activity? Try looking for the answer there. :|, 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. Here's two variants I've tried: Doubt in Arnold's "Mathematical Methods of Classical Mechanics", Chapter 2, Or change any config to test your function. Not the answer you're looking for? You will always have access to the application context.

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