Parallel execution of two suites using web driver and Selenium -

i have 2 testng suites in project. want run both of them in parallel.

suite1:

class class b 

suite2:

class c class d 

i want run suite1 , suite2 in parallel on same machine. however, class b of suite1 should run after class a. same second suite: first , second classes need run in serial.

how achieve this?

in order achieve, need add annotation @test(priority=??). default value 0 priority.

if don't mention priority, take test cases "priority=0" , execute.

if define priority "priority=", these test cases executed when test cases don't have priority default priority set "priority=0"

you dont need 2 xml requirement. follow these , should have same test running parallel.

<suite name="test-class suite" parallel="tests" thread-count="2"> <test name="test-class test 1">     <classes>         <class name="com.classa" />         <class name="com.classb" />     </classes> </test> <test name="test-class test 2">     <classes>         <class name="com.classc" />         <class name="com.classd" />     </classes> </test> 

make sure parallel parameter have parallel='true' , thread-count per requirement.