As we all are aware
parallel execution is one of the most important concepts in any of the test
automation framework and by executing our test in parallel we can save a lot of
time.
So in this Appium
tutorial we would be looking into how we can execute Our Appium
Test parallelly on Android Emulators.
Parallel execution of Tests on Android Emulators
In this example, we will
try to execute one Sample test case in 2 Android emulators in parallel.
In order to achieve that
we need to understand 2 important concepts:
A) We need to start/stop the
Appium Server from Code:
Normally we use the
Appium Desktop Application to start the Appium server and one Appium the server is bound to one Appium Session (or you can say to one device/emulator),
but now as we need to run the test case on 2 Android emulators at the same
time, we need 2 Appium servers running on two different ports.
Now we can’t be dependent on the Appium Desktop Application as it will be able to run only one Appium Server. So the best approach would be to create and run 2 Appium servers at runtime using java and easily create the Runtime Appium Server by mentioning the particular port.
In our case, we will need 2
different ports to start 2 different Appium Servers(or Sessions).
Below is the code which
will start and stop the Appium server for port 4725.
B) We need to use parameters in Test Class and testng.xml
We need to start 2 Appium
Servers on 2 different ports and each device should be assigned to a single
Appium Server.
This table may make it
more clear:
S.No
|
Appium
Port No
|
Device
Name
|
Platform
Version
|
1
|
4725
|
Emulator-9811
|
7.0
|
2
|
4726
|
Emulator-7811
|
8.0
|
Now we need to pass these
values from testng.xml to our Test Class before all initialization of the
WebDriver takes place. And we will use the TestNG @Parameters annotation
for that.
Please consider the below
example to understand how @Parameter at the Test Class level and
<parameter> at testng.xml level works.
If we want to run the test
cases in parallel, then we need to use attributes along with the <suite>
tag.
1) parallel: It
has a number of possible values such as tests, classes, methods, and instances. If you
want to run parallelization at <test> then you can use parallel="tests"
2) thread-count: No
of threads to execute in parallel. If you want to execute 5 test cases in parallel
then thread-count="2"
Below is the testing.xml
file for execution
After adding this to
testng.xml we just need to right-click on it and select Run option, and we will
see the 2 Android emulators will open and each of them will execute test cases
in parallel.
Parallel execution of Tests on Android Real Devices
Similarly, for executing parallel tests on real devices we need to pass the device name in testng.xml that we can get it using adb devices and execute our test in parallel on real devices.
Parallel execution of Tests on Android Real Devices
Similarly, for executing parallel tests on real devices we need to pass the device name in testng.xml that we can get it using adb devices and execute our test in parallel on real devices.
