Mockito 3 Stubber doCallRealMethod

Stubber doCallRealMethod is is used when we need to call the real method.

package com.example.mokito3.sujan;

public class AppleService {
    public String processApple(String appleName) {
        String appleString = "I love " + appleName + " Apple";
        return appleString;
    }
}

package com.example.mokito3.sujan;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import static org.mockito.Mockito.doCallRealMethod;
import static org.mockito.Mockito.mock;

@ExtendWith(MockitoExtension.class)
public class AppleServiceTest {
    @Mock
    private AppleService appleService;

    @Test
    void saveAppleWithStaticMockTest() {
        AppleService appleService = mock(AppleService.class);
        doCallRealMethod().when(appleService).processApple("Macintosh");
        String apple = appleService.processApple("Macintosh");
        Assertions.assertEquals("I love Macintosh Apple", apple);
    }

    @Test
    void saveAppleWithAnnotationMockTest() {
        doCallRealMethod().when(appleService).processApple("Macintosh");
        String apple = appleService.processApple("Macintosh");
        Assertions.assertEquals("I love Macintosh Apple", apple);
    }
}

plugins {
    id 'java'
}

group 'org.example'
version '1.0-SNAPSHOT'

repositories { jcenter() }
dependencies {
    testImplementation('org.junit.jupiter:junit-jupiter:5.6.2')
    testCompile 'org.mockito:mockito-junit-jupiter:3.4.4'
}
test {
    useJUnitPlatform()
}