Can I use Maven to generate a Jar that i can run my different Selenium TestNG tests using different testng xmls - maven

Question

I can use Maven to generate a directory containing my tests and dependencies and run them from the command line using "java -cp" . But I cannot get this to work in a single jar, without recreating a testng main and needing to pass testng xmls in and such. Thinking this is a simple thing being overlooked.
fundamentally I believe this may be a question of, can you create a jar that runs a main in an included package dependency? I may not be asking or stating correctly, if so, some help with that would also be appreciated.
precon, Maven 3.5.4 and Java 1.8 installed
I HAVE been able to "copy dependencies" and run the following usual TestNG command line:
java -cp %CD%\target\*; org.testng.TestNG TestTest.xml
but this is not as nice as just getting everything into one jar.
If possible, I don't want to have to recreate the TestNG main and further pass xmls etc. which I have done. I want to just use TestNG as is and package it with my tests in a single jar, and run like this:
java -jar %CD%\target\myproj-0.0.1-jar-with-dependencies.jar TestTest.xml
from My POM file pom.xml
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<skipTests>true</skipTests>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.testng/testng -->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>7.0.0-beta3</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-java -->
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>3.141.59</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<!-- Source directory configuration -->
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>org.testng.TestNG</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<!-- // Following plugin executes the testng tests -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.14.1</version>
<configuration>
<!-- // Suite testng xml file to consider for test execution -->
<suiteXmlFiles>
<suiteXmlFile>testtest.xml</suiteXmlFile>
</suiteXmlFiles>
<skipTests>${skipTests}</skipTests>
</configuration>
</plugin>
</plugins>
</build>
my testNG xml TestTest.xml
<groups>
<run>
<include name="basic"/>
</run>
</groups>
<classes>
<class name="myproj.TestTest"/>
</classes>
my tests in TestTest.java
package myproj;
import org.testng.annotations.Test;
public class TestTest{
#Test(groups = { "basic" })
public void Test05BasicPASS() {
System.out.println("This is test 5, Basic Pass");
}
}
directory structure:
-testproj
pom.xml
TestTest.xml
-src
-myproj
TestTest.java
Jars get output to:
-testproj
-target
On command line I can successfully run:
mvn package -DskipTests=false
to build, run tests and generate jars with maven
After running and the jar exists, I believe I should be able to run the following and have the tests run as well:
java -jar %CD%\target\myproj-0.0.1-jar-with-dependencies.jar TestTest.xml
however I get:
Error: Could not find or load main class org.testng.TestNG
Net goal, to be able to build a project using testng and run my tests with testNG xmls on the command line.
This should work independent of any IDE.

Answer 1

If you want to build so callled "fat jar" - a single executable .jar containing all dependencies and invoking TestNG main class I would recommend going for Maven Shade Plugin:
Remove the following lines from your pom.xml
<scope>provided</scope>
Add the following Maven Shade plugin definition to create an executable jar:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.testng.TestNG</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
Package the jar
Once done you should be able to invoke your test as jar -jar myproj-0.0.1.jar
Full pom.xml just in case:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>myproj</artifactId>
<version>0.0.1</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<skipTests>true</skipTests>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.testng/testng -->
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>7.0.0-beta3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.seleniumhq.selenium/selenium-java -->
<dependency>
<groupId>org.seleniumhq.selenium</groupId>
<artifactId>selenium-java</artifactId>
<version>3.141.59</version>
</dependency>
</dependencies>
<build>
<!-- Source directory configuration -->
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>org.testng.TestNG</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
<!-- // Following plugin executes the testng tests -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.14.1</version>
<configuration>
<!-- // Suite testng xml file to consider for test execution -->
<suiteXmlFiles>
<suiteXmlFile>testtest.xml</suiteXmlFile>
</suiteXmlFiles>
<skipTests>${skipTests}</skipTests>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.testng.TestNG</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>