Parallel Execution using Failsafe plugin

 

Running Cucumber Feature using Failsafe plugin in place of Maven Surefireplugin.

  Maven Project Structure.

     D:.

├───.settings

└───src

    ├───main

    │   ├───java

    │   │   └───parallelExecution

    │   └───resources

    └───test

        ├───java

        │   ├───cucumberRunner

        │   └───StepDefination

        └───resources

            └───parallel

We need to add the  Failsafe plugin in POM.xml 

   Rename the runner class to RunCucumberIT       

 <plugin>

    <groupId>org.apache.maven.plugins</groupId>

    <artifactId>maven-failsafe-plugin</artifactId>

    <version>2.21.0</version>

    <executions>

        <execution>

            <goals>

                <goal>integration-test</goal>

                <goal>verify</goal>

            </goals>

            <configuration>

                <parallel>methods</parallel>

                <useUnlimitedThreads>true</useUnlimitedThreads>

                <include>**/*IT.java</include>

            </configuration>

        </execution>

    </executions>

</plugin>

To set the thread count to a specific number instead of useUnlimitedThreads use the below setting.

<configuration>
    <parallel>methods</parallel>
    <threadCount>4</threadCount>
</configuration>

The thread count in the above setting is 4 threads per core. If you want this to be 4 threads across all cores set the perCoreThreadCount to false.

<configuration>
    <parallel>methods</parallel>
    <threadCount>4</threadCount>
    <perCoreThreadCount>false</perCoreThreadCount>
</configuration>

In case of multiple runners one can also set the parallel option to classesAndMethods or classes in addition to methods.

We need to create two runner class and distribute the feature file

<configuration>
    <parallel>classesAndMethods</parallel>
    useUnlimitedThreads>true</useUnlimitedThreads>
</configuration>

Parallel execution using fork count

 Mentioning Two Runner class in Pom.xml

<plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.19.1</version>
          <configuration>
        <testFailureIgnore>true</testFailureIgnore>
        <forkCount>7</forkCount>
        <reuseForks>true</reuseForks>
        <includes>
            <include>**/RunCucumberIT.class</include>
            <include>**/RunCucumberTwoIT.class</include>
        </includes>
    </configuration>
        </plugin>