Java + Groovy + TestNG + Maven combination example1

Calc1.groovy

package gjt1;

public class Calc1 {
    int v1;
    int v2;
    def Calc1(int a, int b) {
        v1 = a;
        v2 = b;
    }
    int calc() {
        v1 + v2;
    }
}

Calc1Test.groovy

package gjt1;

import org.testng.Assert;
import org.testng.annotations.Test;

public class Calc1Test {

    @Test
    public void calc1() {
        Calc1 c1 = new Calc1(10, 20);
        Assert.assertEquals(c1.calc(), 30);
    }

    @Test
    public void calc2() {
        Calc2 c2 = new Calc2(1, 2);
        Assert.assertEquals(c2.calc(), 3);
    }
}

Calc2.java

package gjt1;

public class Calc2 {
    private int v1;
    private int v2;
    public Calc2(int a, int b) {
        v1 = a;
        v2 = b;
    }
    public int calc() {
        return v1 + v2;
    }
}

Calc2Test.java

package gjt1;

import org.testng.Assert;
import org.testng.annotations.Test;

public class Calc2Test {

    @Test
    public void calc1() {
        Calc1 c1 = new Calc1(1, 2);
        Assert.assertEquals(c1.calc(), 3);
    }

    @Test
    public void calc2() {
        Calc2 c2 = new Calc2(10, 20);
        Assert.assertEquals(c2.calc(), 30);
    }
}

pom.xml

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>gjt1</groupId>
  <artifactId>gjt1</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>gjt1</name>
  <url>http://maven.apache.org</url>
  <dependencies>
<!--
    This leads
"""
Failed to execute goal org.codehaus.gmaven:gmaven-plugin:1.4:compile (default) 
on project gjt1: Execution default of goal org.codehaus.gmaven:gmaven-plugin:1.4:compile failed: 
An API incompatibility was encountered while executing 
org.codehaus.gmaven:gmaven-plugin:1.4:compile: java.lang.NoSuchMethodError: 
org.codehaus.groovy.ast.ModuleNode.getStarImports()Ljava/util/List;
"""
    <dependency>
      <groupId>org.codehaus.gmaven.runtime</groupId>
      <artifactId>gmaven-runtime-1.8</artifactId>
      <version>1.4</version>
    </dependency>
-->
    <dependency>
      <groupId>org.codehaus.groovy</groupId>
      <artifactId>groovy-all</artifactId>
      <version>1.8.8</version>
    </dependency>
    <dependency>
      <groupId>org.testng</groupId>
      <artifactId>testng</artifactId>
      <version>[6.8,)</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <plugins>
      <plugin>
        <groupId>org.codehaus.gmaven</groupId>
        <artifactId>gmaven-plugin</artifactId>
        <version>1.4</version>
        <configuration>
          <providerSelection>1.8</providerSelection>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>generateStubs</goal>
              <goal>compile</goal>
              <goal>generateTestStubs</goal>
              <goal>testCompile</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>