JUnit 5 Gradle setup

AppTest.java

import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertNotNull;

public class AppTest {
    @Test public void testAppHasAGreeting() {
        App classUnderTest = new App();
        assertNotNull("app should have a greeting", classUnderTest.getGreeting());
    }
}

build.gradle

plugins {
    id 'java'
    id 'application'
}

version = '1.0'
mainClassName = 'App'

dependencies {
	testCompile('org.junit.jupiter:junit-jupiter-api:5.2.0')
	testCompile('org.junit.jupiter:junit-jupiter-params:5.2.0')
	testRuntime('org.junit.jupiter:junit-jupiter-engine:5.2.0')
}

jar {
    manifest {
        attributes  'Implementation-Title': 'App',
                    'Implementation-Version': version,
                    'Main-Class': mainClassName
    }
}

test {
	useJUnitPlatform()
	testLogging {
		events "passed", "skipped", "failed"
	}
}

repositories {
    mavenCentral()
}

commands.sh

gradle run  # run project
gradle test  # run tests
gradle clean  # clean out build artifacts
gradle build jar  # build the jar file
java -jar ./build/libs/App-1.0.jar  # run jar file using java
gradle clean build jar # stringing gradle commands together