Should I be using the test classes on Android Studio for my small application?
What can unit testing tell me that I can't already see in logs when I run the App? Can you give an example of something I should test by writing testing code rather than just manually testing stuff on my device?
Well, by using for instance JUnit you can test for much more cases (especially edge cases since you are able to use dummy data for the tests).
You can also test much more efficient. Let's assume you've manually tested for 30 minutes. If you change some small detail you would essentially need to test for another 30 minutes to make sure that the change didn't influence the other components.
But let's say you are using UnitTesting. Well, after changing some small detail you just run the test again and the outcome should be the same.
If you plan to release the app I would definetly make use of the test classes.
Take a look at this article for more details: https://www.seguetech.com/why-mobile-application-testing-important/
Related
I'm attempting to add some test automation to my XF app, but I'm having some difficulty as I've never used Appium before so I'm hoping that someone with experience may be able to help with my issues.
When I'm setting up my tests - if I set the "automationName" to be "UiAutomator2", then I can launch my app without problems and interact with the UI fine.
I need to do some tests with specific methods inside my app, but Appium only allows interaction with the UI. Doing some searching, I found that Appium contains an Espresso driver which is supposed to allow interaction with specific methods (this sounds exactly what I'm after).
The suggestion is to change the "automationName" from "UiAutomator2" to "Espresso" - the example I was going through in the Appium documentation was a simple test that just launched the app. It suggested that just by changing this setting, that the same test would work regardless.
I have created a simple test that just launches my app - this works fine with "UiAutomator2" but as soon as I change to "Espresso", my app doesn't launch.
The Appium server mentions not being able to find the signed .apk.
According to the documentation, this should all be working fine but as it isn't I'm guessing that there's something else that I need to do so I'm hoping that someone with experience with this will be able to help me get the tests to work.
I don't know whether I need to add a reference to Espresso somewhere in my XF app or if I need to build the .apk in a special way that will make it work.
Any advice or help on this matter would be grateful.
IMHO there are better options to achieve what you want. I'd always test the methods that are not platform specific separately, e.g. with with NUnit. You can run Unit- and Integration-Tests created with NUnit with the NUnit GUI or ReSharper if you've got a license. Unless you are using very exotic functions (or relying on timings, etc.) this should work well across all platforms.
If you are not sure that your methods will behave the same across all platforms (better to be sure), I'd create a separate App that runs tests on those methods on an actual device. There is a runner for NUnit-Tests for Xamarin.Forms, you could use for this purpose. The last release is from 2017, but I'd give it a shot. This way you can make sure that your methods work as intended, but avoid having to access them via a framework that is aimed at UI-tests.
I have read some articles about unit testing in Android including the official documentations and wrote some demos, it is complicated and slow because it must run on a device or emulator. Should I continue using it or find another option?
Usually a good test should run on the target device. Thats why my answer is: yes you should continue using it. If you test on an emulator or something like that there could be some little differences that would cause some different behaviour than on the real device (espacially if you use some hardware components).
If you use a real device there is also the side benefit that the test runs faster than on the emulator.
You're looking for Robolectric.
Robolectric is a unit test framework that de-fangs the Android SDK jar so you can test-drive the development of your Android app. Tests run inside the JVM on your workstation in seconds.
It is not complete yet (e.g. Support Library Action Bar is not supported) but it will save you a lot of time anyway. Besides you can add what's missing by developing shadows yourself.
My alternative looks like this:
I have refactored my android app into
app (gui using the libs),
android-independant-lib (service-interfaces, dto-s, businesslogic without database bindings)
android-dependent-lib (android specific implementation of the of the service-interfaces and database binding)
for the android-independant-lib i have created "normal" junit-tests
for the android-specific parts i currently have no automatted tests.
I am using AndroidAnnotations(2.5) in a sample project I am currently working on.
Since you can annotate your classes with for example #EActivity,#ViewById,#Click which will all lead to generated compile-time code, I was wondering how one would go about creating unit tests / functional tests for any Android Annotations powered application.
I would love to hear some opinions on this matter.
Cheers,
I responded to a similar post here.
There are a couple of options available to you. You can, of course, test your code pre-generation in, what I claim, is a more unit testing style. This should test the Java code in isolation, preferably without generated code involved.
You can also test the code post-generation. The MyActivity_ classes generated by AA can be instantiated directly after compile time and test them accordingly. I claim this is edging towards an integration testing style.
While, I think it is always better to test than not to test, I think for integration tests, you should test on the hardware in a situation similar to production. This gives you a total picture of how your application will behave in a real world situation. Thus, for integration tests I prefer high level "is everything working well together" tests.
Robolectric and Robotium can help greatly in these two efforts. Robolectric allows you to instantiate you Activities in a unit test, while Robotium allows you to test selenium style directly on a device.
To recap, I prefer to heavily unit test my code without generation then do some light integration testing to make sure everything is working well together.
I'm new to testing.I've developed a application,now i need to test.I googled about testing for some time,learnt ,what different types of testing are there in general.I wrote few test cases.
Three things,i would like to know,
Is there any different types of testing for android,if yes,can you give me some links which could help me to refer.
How do generally a android user test his apps,Will he uses test frame works or generally write test cases and testing that on real phone to see how they are performing.
Is there any sample test cases written document which will give me some basic idea.
For integration testing I use Robotium. It is a nice convenient layer on top of the build in instrumentation testing. These Tests need to be running in an emulator or on a real device. It is recommended in both cases to have an extra test project (producing an additional APK) that depends on the project under test.
Personally I like to partition my app so I have one or more libraries that do not depend on Android specific classes and can therefore be tested in a regular JVM using JUnit.
There is a third way to test and that is by mocking the android classes and have the tests run in a JVM. I have not yet used it but I hear Roboelectric is a framework that allows for this kind of testing.
Android Monkey tool can be a handy little tool. I find it handy the pseudo random fashion is handy for generating unusual use cases.
http://developer.android.com/guide/developing/tools/monkey.html
I have been developing Android application for a small company and during the development process we need to do repetitive testing of some modules, So i searched tools for doing automation testing (unit testing) of the app. Android has a unit test tool however to write those test cases will itself take more time then to actually test it by hand.
I found some apps which do some great stuff and provide good charts for example Robolectric, robotium, fonemonkey4android, but am confused to what to be used, any one with any experience with the same can help.
I checked for previous questions on the similar terms like below
https://stackoverflow.com/questions/522312/best-practices-for-unit-testing-android-apps
But all the threads are very old and not so informative to decide on which to choose..
I think first you need figure out which part of your code you want to test.
For codes which doesn't related to user interface, you can test them with Robolectric. With Robolectric, the unit test code is the same to those written for java application. But it's not suitable for test ui components.
If you want to test ui, then you can choose robotium. But i always doubt whether it's worth writing tests for ui, they change too often..