Implementing parallel execution for faster test

Implementing parallel execution for faster test runs

Run tests in parallel to reduce execution time. Use thread pools and test frameworks that support parallelism.

Examples

// Example 1: JUnit with Parallel Execution
import org.junit.jupiter.api.parallel.Execution;
import org.junit.jupiter.api.parallel.ExecutionMode;
import org.junit.jupiter.api.Test;

@Execution(ExecutionMode.CONCURRENT)
public class ParallelTests {
    @Test
    void test1() {
        // Test code here
    }

    @Test
    void test2() {
        // Test code here
    }
}

// Example 2: TestNG with Parallel Execution
import org.testng.annotations.Test;

@Test(threadPoolSize = 3, invocationCount = 3, timeOut = 1000)
public class ParallelTestNG {
    public void testMethod() {
        // Test code here
    }
}

// Example 3: Selenium Grid for Parallel Execution
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.remote.DesiredCapabilities;
import org.openqa.selenium.remote.RemoteWebDriver;
import java.net.MalformedURLException;
import java.net.URL;

public class SeleniumGridParallelTest {
    public static void main(String[] args) throws MalformedURLException {
        DesiredCapabilities capabilities = DesiredCapabilities.chrome();

        WebDriver driver1 = new RemoteWebDriver(new URL("https://localhost:4444/wd/hub"), capabilities);
        WebDriver driver2 = new RemoteWebDriver(new URL("https://localhost:4444/wd/hub"), capabilities);

        driver1.get("https://example.com");
        driver2.get("https://example.com");

        // Perform tests
        driver1.quit();
        driver2.quit();
    }
}

FAQ (interview questions and answers)

1. What is the benefit of parallel test execution?
   Increased code complexity
   Reduced test execution time
   Higher error rates
   
2. Which framework supports parallel execution in JUnit?
   JUnit 5
   TestNG
   Selenium Grid
   
3. How do you configure parallel execution in TestNG?
   Using RemoteWebDriver
   Using threadPoolSize and invocationCount
   Using ExecutionMode
   
4. What tool is used for parallel execution in Selenium?
   JUnit
   TestNG
   Selenium Grid
   
5. What should be considered when running tests in parallel?
   Slower test execution
   Single-threaded execution
   Resource management
   

Your Total Score: 0 out of 5

Remember to just comment if you have any doubts or queries.