在 testNG Selenium 中并行执行测试

Question

I am not able to invoke the browsers in parallel, which are currently invoking one after another. Need a way to invoke the browsers in parallel tests.
NOTE: In my configuration xml file I have kept the thread count as 2.

Below is my configuration file:

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE suite SYSTEM "testng.org/testng-1.0.dtd"; > 
<suite name="Parallel" parallel="tests" thread-count="4" > 
    <test verbose="3" name="<name>"> 
        <parameter name="platform" value ="win8"/> 
        <parameter name="browsername" value ="internet explorer"/> 
        <classes> 
            <class name="com.parallel.execution.ParallelExecution"> 
                <methods> 
                    <include name="testmethod1"/> 
                </methods> 
             </class> 
         </classes> 
     </test> 
</suite>

Answer 1

We have to define two attributes ' parallel ' and ' thread-count ' in simple testng.xml file. See below:

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Parallel Execution suite" parallel="methods" thread-count="2">
  <test name="Regression 2">
    <classes>
      <class name="com.parallel.TestParallelExecution"/>
    </classes>
  </test>
</suite>

In above, as we want the test methods to be executed parallel, we have set the parallel attribute as 'methods' and thread-count attribute will control the max number of threads to be created.

Re-installing TestNG solved the above problem.

Answer 2

You have to explicitly write code to invoke the browser as part of a @Before configuration to invoke the browser every time a @Test is run . I will specify one of the many approaches so that you get an idea.

<suite name="Parallel" parallel="tests" thread-count="4" > 
    <test verbose="3" name="test1"> 
        <classes> 
            <class name="com.parallel.execution.ParallelExecution1"/>  
         </classes> 
    </test> 
    <test verbose="3" name="test2"> 
        <classes> 
            <class name="com.parallel.execution.ParallelExecution2"/>  
        </classes> 
     </test> 
</suite>

Consider a suite file with 2 tests set to run in parallel. What we expect is @Test methods in ParallelExecution1 runs in first browser and @Test methods in ParallelExecution2 runs in second browser. So you need a mechanism by which you can invoke browser sessions and run your test methods. Enter BaseTest class.

public abstract class BaseTest {
    protected WebDriver driver;        

    @BeforeTest
    @Parameters({"browser"}) 
    public void init(String browser) {
        // Initialize your browser here. Code below is dummy
        driver = new FF();
    }

    @AfterTest
    public void end() {
        driver.close();
        driver.quit();
    }
}

Now inherit this 'BaseTest' in both your test classes.

public class ParallelExecution1 extends BaseTest {
    @Test
    public void test1() { 
    }
}


public class ParallelExecution2 extends BaseTest {
    @Test
    public void test2() { 
    }
}

Now both the tests have @BeforeTest and @AfterTest methods which will invoke the browsers.