mockito and powermockito test example

Hoge.java

/**
 * Created by souichi_sumi on 2017/09/28.
 */

//unimplemented class
public class Hoge {
    static String var1 = "hoge1";
    static String var2 = "hoge2";
    static String var3 = "hoge3";
    static String var4 = "hoge4";

    public String get12(){return "";} //todo return var1 + var2

    public String connectStrs(String str){return "";} // todo return var3 + str + var4

    public String retStr(){return "autowired!";}

    private int conductMult(int a, int b){ return 0;} //todo return a * b

    public int pubCond(int a, int b){return conductMult(a,b);}

    private String retSimpleString(String a){return a;}
}

HogeTest.java

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Spy;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;
import org.powermock.reflect.Whitebox;

import static org.mockito.Mockito.*;

/**
 * Created by souichi_sumi on 2017/09/28.
 */
//test unimplemented class
@RunWith(PowerMockRunner.class)
@PrepareForTest(Hoge.class)
public class HogeTest {
    @Spy
    Hoge target = new Hoge();

    @Before
    public void setUp() throws Exception{
        String resGet12 = Hoge.var1 + Hoge.var2;

        when(target.get12()).thenReturn(resGet12);
        when(target.connectStrs(anyString())).then((i) ->
                Hoge.var3 + i.getArgumentAt(0, String.class) + Hoge.var4 );
        PowerMockito.doAnswer((a)->a.getArgumentAt(0,int.class)*a.getArgumentAt(1,int.class)).when(target,"conductMult",anyInt(), anyInt());
    }

    @Test
    public void testGet12Mock() {
        Assert.assertEquals(target.get12(), "hoge1hoge2");
    }

    @Test
    public void testConnectStrsMock() {
        Assert.assertEquals(target.connectStrs("yoyoyo"),"hoge3yoyoyohoge4");
    }

    @Test
    public void testAutowired(){Assert.assertEquals("autowired!",target.retStr());}

    @Test
    public void testCondMult(){Assert.assertEquals(10,target.pubCond(2,5));}

    @Test
    public void testPrivateMethod()throws Exception{
        Assert.assertEquals("given string", Whitebox.invokeMethod(target,"retSimpleString", "given string"));
    }


}

pom.xml

<?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>jo.yoyoyousei.mocktest</groupId>
    <artifactId>MockTest</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <powermock.version>1.7.1</powermock.version>
    </properties>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.mockito/mockito-all -->
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.10.19</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>

            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-module-junit4</artifactId>
                <version>${powermock.version}</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-api-mockito</artifactId>
                <version>${powermock.version}</version>
                <scope>test</scope>
            </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>