How to create executable JAR for TestNG class using intellij and gradle? – User friendly Tech help
Problem:- How to create a executable JAR for testng class using intellij + gradle.
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nTool stack :– Intellij (IDE) + Gradle (Build tool) + TestNg (Testing framework)
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Step1:– Create a basic java class to display “HelloBuild!”, execution using TestNG.
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public class TestBuild {
@Test
public void test() {
System.out.println("HelloBuild!");
}
}
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Step2:-Browse to the parent directory of the java class using Terminal/Command prompt > gradle clean
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nThis is used to clean any existing build directory (cleaning everything including leftovers from previous builds which are no longer relevant. )
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Step3:- gradle build, build the java projects and create the JAR package inside build > libs > test-****.jar
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nStep4:- Now our jar package is ready lets browse to this package and try to run the java class
njava – jar test-****.jar
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nThis failed with “no main manifest…”
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Step5:-add the below line to your build.gradle
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jar {
from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
manifest {
attributes 'Main-Class': 'TestBuild'
}
}
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nMain-Class : ‘Name of the class to be build‘
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nStep6.:- if we repeat step2 > step 4 again, this time, you will get the “no main method error” as below. As our code doesn’t contain any main method to start the execution.
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nStep7:- Here comes the final solution…Adding the below code inside our main method in the “TestBuild” class and add the testng.xml file containing the TestBuild class name as below.
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nNow repeat the build process above, this time it will execute the code and print the “HelloBuild!”
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WOOW WE MADE IT 🙂
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Main Method:-
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public static void main(String[] args) {
TestNG testng = new TestNG();
List suites = Lists.newArrayList();
suites.add("/home/ms/Documents/Code/testbuild/src/main/resources/testng.xml");
testng.setTestSuites(suites);
testng.run();
}
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testng.xml file:-
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