Running WebDriver tests in parallel using testng.xml

Question

I'm trying to run WebDriver tests in parallel using testng.xml. I'm able to run testng tests in parallel by using parameter parallel="tests" but running with following paramters, "methods", "classes" is not working.

testng.xml

    <suite name="Suite1" verbose="1" parallel="methods" thread-count="5">
   <test name="Cart">
    <classes>
       <class name="com.tests1.Minus1">
       </class>       
    </classes>
   </test> 
  <test name="Checkout">
    <classes>
      <class name="com.tests2.AddA"/>
      <class name="com.tests2.AddB"/>
      <class name="com.tests2.AddC"/>
    </classes>
  </test>

  <test name="MBB">
    <classes>
      <class name="com.tests3.Mult1"/>
      <class name="com.tests3.Mult2"/>      
    </classes>
  </test>
</suite>

I tried with these versions 6.0.1, 5.9, 5.14.1, 6.3.1, 5.14.10, 5.10.0.1, 6.3, 5.14.6, 5.5. It didn’t seem to work. I also increased thread count to 100, but no behavior difference.

Can anyone please point out what I'm missing here?

Thanks

Answer 1

Place this in your test or suite tag: preserve-order="false"

If this is not in there, parallel classes will not work.

Answer 2

I am not sure that I understand your goal. Using your testng.xml, when I ran with parallel='tests', each group of tests under a test tag ran sequentially, but the three test tags ran in parallel. Is that enough parallelism for you, or is your intent to run all six test classes simultaneously? If the latter, have you considered putting all six test classes under the same test tag?

Answer 3

For each suite you have to specify parallel="classes" and thread-count then testcases under that suite will run in parallel

Below is working testng.xml. u can give a try surely it will work since its working for me.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Suite" parallel="classes" thread-count="2">
<test name="Test">
<classes>
  <class name="demo.suite.GoogleTest"/>
  <class name="demo.suite.YahooTest"/>
</classes>
</test> <!-- Test -->
</suite> <!-- Suite -->