xvfb parallel run on same node inside Jenkins [duplicate] - selenium

Question

looking for help to execute cucumber 7 in parallel. My project is serenity with cucumber and java. In this link https://johnfergusonsmart.com/parallel-test-execution-with-cucumber-and-serenity-bdd/ it is showing that it is possible to run but tried different combination and looks like I missed something.
Here is my pom.xml file:
<?xml version="1.0" encoding="UTF-8"?>
4.0.0
<groupId>com.d</groupId>
<artifactId>Automation</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<serenity.version>3.2.0</serenity.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<encoding>UTF-8</encoding>
<tags></tags>
<parallel.tests>4</parallel.tests>
<webdriver.base.url></webdriver.base.url>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-rest-assured</artifactId>
<version>${serenity.version}</version>
</dependency>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-cucumber</artifactId>
<version>${serenity.version}</version>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-launcher</artifactId>
<version>1.8.1</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.8.2</version>
</dependency>
<dependency>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
<version>5.8.2</version>
</dependency>
<dependency>
<groupId>com.googlecode.lambdaj</groupId>
<artifactId>lambdaj</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.12.4</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>commons-dbutils</groupId>
<artifactId>commons-dbutils</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>9.4.0.jre11</version>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>com.github.javafaker</groupId>
<artifactId>javafaker</artifactId>
<version>1.0.2</version>
</dependency>
<dependency>
<groupId>org.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>4.1.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<includes>
<include>**/Runner*.java</include>
</includes>
<systemPropertyVariables>
<webdriver.base.url>${webdriver.base.url}</webdriver.base.url>
</systemPropertyVariables>
<parallel>classes</parallel>
<useUnlimitedThreads>true</useUnlimitedThreads>
</configuration>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>11</source>
<target>11</target>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
</configuration>
</plugin>
<plugin>
<groupId>net.serenity-bdd.maven.plugins</groupId>
<artifactId>serenity-maven-plugin</artifactId>
<version>${serenity.version}</version>
<configuration>
<tags>${tags}</tags>
<reports>single-page-html</reports>
</configuration>
<executions>
<execution>
<id>serenity-reports</id>
<phase>post-integration-test</phase>
<goals>
<goal>aggregate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-single-page-report</artifactId>
<version>${serenity.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
To execute:
I add same tag to multiple feature files and run through command line: mvn clean verify -Dtags="#regression"
Expected: Open multiple browsers at the same time to execute test faster

Answer 1

Find the solution for parallel execution with cucumber 7 and serenity junit 4. Below pom.xml is tested and working to execute parallel. According to this pom.xml to execute two ways:
locally - add to your runner in tags tag you want to run and then execute this command mvn clean verify
mvn clean verify -Dtags="#yourtagHere"
Working pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
4.0.0
<groupId>com.d</groupId>
<artifactId>Automation</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<serenity.version>3.2.0</serenity.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<encoding>UTF-8</encoding>
<tags></tags>
<parallel.tests>5</parallel.tests>
<webdriver.base.url></webdriver.base.url>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-rest-assured</artifactId>
<version>${serenity.version}</version>
</dependency>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-cucumber</artifactId>
<version>${serenity.version}</version>
</dependency>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-junit</artifactId>
<version>${serenity.version}</version>
</dependency>
<dependency>
<groupId>com.googlecode.lambdaj</groupId>
<artifactId>lambdaj</artifactId>
<version>2.3.3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.12.4</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.codehaus.jettison</groupId>
<artifactId>jettison</artifactId>
<version>1.4.1</version>
</dependency>
<dependency>
<groupId>commons-dbutils</groupId>
<artifactId>commons-dbutils</artifactId>
<version>1.7</version>
</dependency>
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>mssql-jdbc</artifactId>
<version>9.4.0.jre11</version>
</dependency>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<version>2.6.0</version>
</dependency>
<dependency>
<groupId>com.github.javafaker</groupId>
<artifactId>javafaker</artifactId>
<version>1.0.2</version>
</dependency>
<dependency>
<groupId>org.awaitility</groupId>
<artifactId>awaitility</artifactId>
<version>4.1.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<skip>true</skip>
</configuration>
</plugin>
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<includes>
<include>**/*Runner.java</include>
</includes>
<systemPropertyVariables>
<webdriver.base.url>${webdriver.base.url}</webdriver.base.url>
</systemPropertyVariables>
<parallel>methods</parallel>
<threadCount>${parallel.tests}</threadCount>
<!-- <forkCount>${parallel.tests}</forkCount>-->
<!--<useUnlimitedThreads>true</useUnlimitedThreads>-->
</configuration>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.10.0</version>
<configuration>
<source>11</source>
<target>11</target>
<compilerArgs>
<arg>-parameters</arg>
</compilerArgs>
</configuration>
</plugin>
<plugin>
<groupId>net.serenity-bdd.maven.plugins</groupId>
<artifactId>serenity-maven-plugin</artifactId>
<version>${serenity.version}</version>
<configuration>
<tags>${tags}</tags>
<reports>single-page-html</reports>
</configuration>
<executions>
<execution>
<id>serenity-reports</id>
<phase>post-integration-test</phase>
<goals>
<goal>aggregate</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>net.serenity-bdd</groupId>
<artifactId>serenity-single-page-report</artifactId>
<version>${serenity.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>

Answer 2

#Yuri I had similar issue and it required to use the 3.0.0-M3 failsafe plugin version. After that the tests started to run in parallel.
Did you run the tests remotely in parallel? Eg. Jenkins? I had issue to run them in parallel on Jenkins. The tests are randomly failing... I use xvfb plugin...

Answer 3

The issue was focus related. The tests lose focus in the browser window in case multiple tests are running on the same machine.
I moved the tests to run in headless mode and this it fixed the issue. I can now run 6 threads in parallel on the same machine without any random failure issue.