Mobile Testing
Connect Mobile Device with Android Debug Bridge(ADB) to USB, WiFi
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Android is the largest operating system in the world. At the same time, Android is fragmented. there are tons of devices and Android versions that your app must be compatible with.
It doesn't matter how much time you invest in design and implementation , mistakes are inevitable, and bugs will appear.
In this tutorial, you will learn-
A correct android testing strategy should include the following
Unit Tests include sets of one or more programs which are designed to verify an atomic unit of source code, such as a method or a class.
Android platform comes pre-integrated Junit 3.0 framework. It's open source framework for automating Unit Testing. Android Testing Framework is powerful tool for developer to write the effective unit test program.
The integration of Android and JUnit framework
An addition to Unit Testing is User Interface (UI) tests. These tests relate to UI components of your target application. UI tests ensure that your application return the correct UI output in response to sequence of user actions on device.
Common user UI actions on application
The common way to performance UI tests on device is Android Instrumentation. But this has performance issues. One of the best tools to conduct UI testing on Android is Robotium .
In Integration Testing, all unit tested modules, are combined and verified. In Android, integration tests often involve checking integration withAndroid components such as Service testing, Activity testing, Content Provider testing, etc
Types of integration test on Android
There's many testing frameworks are used to conduct integration test for Android such as Troyd, Robolectric, Robotium.
In System Testing the system is tested as a whole and the interaction between the components, software and hardware is checked.
In Android, System Testing normally includes
In the above list, Performance Testing is given more focus. You can use tools like Traceview to conduct performance test on Android .This tool can help you debug your application and profile its performance.
As android is fragmented, testing on multitude of devices is necessary. But this will also cost you money. Automated Android Testing can help reduce costs
Benefits of automated android testing
We will study the following 2 frameworks
One of the standard testing frameworks for Android application is Android testing framework. It is a powerful and easy-to-use testing framework that is well integrated with the Android SDK tools.
Android testing framework Architecture
2a) Test tools: A SDK tools for building test. They are integrated in Eclipse IDE or run as command line.
2b) MonkeyRunner: A tool that provides APIs for writing program which control an Android device or emulator outside of Android code.
3a) Test case classes:include test methods to executed on target application.
3b) Mock objects : includes mock data that will be used as sample input for test cases.
AndroidTestCase class diagram
Below is an example of ActivityInstrumentationTestCase. It verifies the UI operation of Calculator application, check the correctness of the UI outputs.
ActivityInstrumentationTestCase2 testing example
Testing using Android Testing framework with device or emulator is difficult. Building and running test is slow and take much development effort. To fix this problem, there's another choice - Robolectric testing framework.
Robolectric framework allows you to run Android tests directly on JVM without the need for a device or an emulator.
Advance features of Robolectric
Operation of Robolectric
Besides testing frameworks which were mentioned above, there are many other testing frameworks such as:
Many enterprises develop android Testing strategies that are based on common misconceptions. This section examines a few popular myths and realities of Android testing.
Myth #1:All Android devices are the same... test on emulators is enough
Let's start with a simple example. An application works perfectly on emulator s but on some real devices, it crashes during execution
Application crashes during execution on real device
Emulators are not sufficient for your mobile testing. You must test your app on real devices.
Myth #2:Testing on some common devices is enough
Myth#3:Exploratory testing just before launch is enough
Myth#4:If there some bugs in application, users will understand
Therefore its essential to have a proper android testing strategy in place
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