如何使用 TestNG、Java 和 Appium 在多个移动设备上并行运行每个测试？

Question

I have 5 mobile devices and I want to run my automated mobile app tests cases on all the devices for checking the compatibility. For this, I need to run each test on all 5 devices simultaneously. So if I have 10 test cases, each will run on all devices which will make the total count 50.

I am creating a device pool dynamically. The pool will have devices that are connected to the host machine. So it will not have any prior idea of device UDID before running test cases. I understand that multiple Appium sessions are to be created for this. The problem is that I need to somehow create multiple copies of each test case depending on the number of devices connected and then run each of them on all the devices.

Example:

@Test
public void test1(){
}
@Test
public void test2(){
}

The device pool has 5 devices connected. Now I want test1() to be run on each device. Similarly, it applies to test2(). I can create multiple Appium session and assign a device from the device pool. The problem is how to duplicate test methods on the runtime in TestNG.

I couldn't find any straightforward way of doing this in TestNG. Is it possible to achieve? If yes, any example would work.

Answer 1

You have to initiate multiple appium session for each device. Also, follow the following link to proceed with things in details.

https://www.toolsqa.com/mobile-automation/appium/appium-parallel-execution-using-testng/

Answer 2

If you are using maven and TestNG - then you should know about.xml files with suite of tests. Try to implement IAlterSuiteListener and alter your.xml with tests file. Test NG allows separating threads in various ways: for example for 3 devices you can run 1 same test in such way:

1. Create TestNG.xml file with tests
2. Specify in this xml - listener that implements IAlterSuiteListener
3. Alter xml file in runtime with listener, that can detect number of connected devices (that equals thread number), so you can set thread-count and add Tests in loop.

suite name="Android Compatibility Tests" parallel="tests" thread-count="3"

<test name="Android Compatibility Test-1">
    <classes>
        <class name="tests.android_tests.AndroidCompatibilityTest">
        </class>
    </classes>
</test>

  <test name="Android Compatibility Test-2">
    <classes>
        <class name="tests.android_tests.AndroidCompatibilityTest">
        </class>
    </classes>
</test>

 <test name="Android Compatibility Test-3">
    <classes>
        <class name="tests.android_tests.AndroidCompatibilityTest">
        </class>
    </classes>
</test>

Read an documentation about parallelism in Appium 1 : https://www.javadoc.io/doc/org.testng/testng/6.11enter code here/org/testng/IAlterSuiteListener.html