package test_junit;

public class CoverageTest {

    public CoverageTest() {

        // TODO Auto-generated constructor stub

    }

    public static void main(String[] args) {

        // TODO Auto-generated method stub

    }

    public static int  testadd(int x, int y){

        int c = 0;

        if(x == 10){

            c = x + y;

        }else{

            c = (x + y)*2;

        }

        return c;

    }

}

package junit;

import org.junit.Assert;

import org.junit.Test;

import test_junit.CoverageTest;

/**

 * Created by 000284 on 2017/2/6.

 */

public class JunitTest {

    @Test

    public void testadd(){

        int b = CoverageTest.testadd(5, 20);

        Assert.assertEquals(b,50);

    }

}

<?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>testunit</groupId>

    <artifactId>test_junit</artifactId>

    <version>1.0-SNAPSHOT</version>

 <profiles>

        <!-- Jenkins by default defines a property BUILD_NUMBER which is used to enable the profile. -->

        <profile>

            <id>jenkins</id>

            <activation>

                <property>

                    <name>env.BUILD_NUMBER</name>

                </property>

            </activation>

            <build>

                <plugins>

                    <plugin>

                        <groupId>org.codehaus.mojo</groupId>

                        <artifactId>cobertura-maven-plugin</artifactId>

                        <version>2.7</version>

                        <configuration>

                            <formats>

                                <format>xml</format>

                            </formats>

                        </configuration>

                        <executions>

                            <execution>

                                <phase>package</phase>

                                <goals>

                                    <goal>cobertura</goal>

                                </goals>

                            </execution>

                        </executions>

                    </plugin>

                </plugins>

            </build>

        </profile>

    </profiles>

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.12</version>

        </dependency>

    </dependencies>

</project>