robolectric | Android Unit Testing Framework | Unit Testing library
kandi X-RAY | robolectric Summary
kandi X-RAY | robolectric Summary
Robolectric is the industry-standard unit testing framework for Android. With Robolectric, your tests run in a simulated Android environment inside a JVM, without the overhead and flakiness of an emulator. Robolectric tests routinely run 10x faster than those on cold-started emulators. Robolectric supports running unit tests for 15 different versions of Android, ranging from Jelly Bean (API level 16) to S (API level 31).
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Top functions reviewed by kandi - BETA
- Dumps the contents of the View .
- Formats a date with the specified locale .
- Parses a package .
- Is the requested resource table?
- Execute the request .
- Apply style attribute .
- Set the contents of this string to a given buffer .
- Create a package from an android manifest .
- Get an entry from the cache .
- Intercept the method that invokes a method without invocations .
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Community Discussions
Trending Discussions on robolectric
QUESTION
I have a composable with a button that launches one of the native activities (Google Settings). To test this before compose (using Robolectric) I would do something like this:
My test:
...ANSWER
Answered 2021-Dec-09 at 08:52You are able to fetch the context from the ComposeContentTestRule like this:
QUESTION
I am attempting to unit test a method that is part of my use case layer of an Android app. The method receives an XML RSS feed and returns it to the view model as GSON-parsed objects. The testing class is annotated with @RunWith(RobolectricTestRunner::class)
.
The test fails because a java.lang.ExceptionInInitializerError
(among others) is thrown by .fromHtml()
within this method of the use case class:
ANSWER
Answered 2022-Mar-21 at 13:56I have discovered a solution. Add the following to the android
section of the module build.gradle
:
QUESTION
I am using Android's Dynamic delivery for one of my feature. I have separated the code for the feature. I am also using the Navigation component in my project.
I can see dynamicfeature being downloaded from the progress bar and after downloading I am using Navigation component to navigate to Fragment2.
However, when I am trying to navigate from Fragment1 which is in my "app" to Fragment2 which is in my "dynamicfeature" I am getting below exception.
...ANSWER
Answered 2022-Feb-16 at 06:49I was able to resolve this issue. Apparently, if you use tag for navigating into the dynamic feature module. You have to specify
ProgressFragment
which extends AbstractProgressFragment
and specify it as app:progressDestination
.
Also since Fragment1 is in base app, which is hosted by activity in base app. We need to override attachBaseContext
method in this activity too like below. This will fix the case where same exception was occurring at the subsequent launch.
QUESTION
I am having simple function as Below
...ANSWER
Answered 2022-Feb-09 at 08:47This code snippet helped to capture that scenario
QUESTION
I have a customviews like below in my xml
...ANSWER
Answered 2022-Jan-21 at 16:11You can use reflections to access the private field private var rowClick: RowEventCallback? = null
of the custom view and then you can call the click interface in the test.
So the test should look something like this
QUESTION
I am trying to mock this function below by using Mockk
library.
ANSWER
Answered 2021-Dec-31 at 06:30I figured it out.
I split my function in 2 parts. Then, I mocked executeProfileInfoGet
part. Now, I don't need to mock launchOn
function anymore.
functions:
QUESTION
I've added a new method to a system service in Android 9
There is a system library, which provides an API for developers and uses modified framework. Library works OK and successfully accesses the new method.
I want to test the library using Robolectric.
Declaration ...ANSWER
Answered 2021-Dec-29 at 09:44Two reasons:
- Robolectric from prebuilts
- SDK version is not current
For now, sdk version should be the same as the platform's version. E.g. for Android 9:
QUESTION
I am trying to write unit tests for a RecyclerView.ViewHolder class which uses ViewBinding but I am facing issues to inflate my ViewBinding in my test class, having this error when running my test :
Binary XML file line #38: Binary XML file line #38: Error inflating class Caused by: java.lang.UnsupportedOperationException: Failed to resolve attribute at index 5: TypedValue{t=0x2/d=0x7f04015d a=2}
I could not find code examples of ViewBinding inflate in test classes, is that possible ? I found this StackOverflow thread but it uses PowerMock to mock a ViewBinding class. I'm using mockK in my project and I think using a real ViewBinding instance would be better in my case.
My ViewHolder looks like this :
...ANSWER
Answered 2021-Dec-15 at 13:55I was able to get this working (using Mockito, but it should be applicable to MockK too) by looking in the generated binding class to see what methods I needed to mock to get it to inflate and return mocked views properly. These files are in app/build/generated/data_binding_base_class_source_out/debug/out/your/package/databinding
for a standard build
Here is an example of a generated data binding class with three views in a ConstraintLayout.
QUESTION
The following has been working for Robolectric 4.2
...ANSWER
Answered 2021-Dec-14 at 19:17According to the maintainer of Robolectric, the migrations steps are
- Used ShadowLegacyAsyncTask
- Used
@LooperMode(LEGACY)
for every test - Add
shadowOf(Looper.getMainLooper()).idle()
to every trigger in every test
Reference: https://github.com/robolectric/robolectric/issues/6925
QUESTION
I have the following code
...ANSWER
Answered 2021-Dec-10 at 21:55Found the solution thanks to this post, adding shadowOf(getMainLooper()).idle()
triggers the stuffs in inside post {}
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