Junit service layer test

You can do the test by using spring boot junit test.

- structure

- build.gradle

group 'org.blog.test'
version '1.0-SNAPSHOT'

apply plugin: 'java'
apply plugin: 'spring-boot'

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:1.4.0.RELEASE")
    }
}

repositories {
    mavenCentral()
}

dependencies {
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-test', version: '1.4.0.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '1.4.0.RELEASE'
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-data-jpa', version: '1.4.0.RELEASE'
    compile group: 'com.h2database', name: 'h2', version: '1.4.192'
    compile group: 'org.projectlombok', name: 'lombok', version: '1.16.10'
    compile group: 'junit', name: 'junit', version: '4.12'
}

- TestService.java

package org.blog.test.service;

import org.blog.test.entity.TestTable;

import java.util.List;

public interface TestService {

    List getTestTableByName(String name);
}

- TestServiceImpl.java

package org.blog.test.service.impl;

import org.blog.test.entity.TestTable;
import org.blog.test.repository.TestRepository;
import org.blog.test.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class TestServiceImpl implements TestService {

    @Autowired
    private TestRepository testRepository;

    @Override
    public List getTestTableByName(String name) {
        return testRepository.findByName(name);
    }
}

- JunitApplication.java

package org.blog.test;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class JunitApplication {
    public static void main(String[] args) {
        SpringApplication.run(JunitApplication.class, args);
    }
}

- TestServiceTest.java

package org.blog.test.service;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.BDDMockito.given;

import java.util.ArrayList;
import java.util.List;

import org.blog.test.entity.TestTable;
import org.blog.test.repository.TestRepository;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@WebMvcTest(TestService.class)
public class TestServiceTest {

    @MockBean
    private TestRepository testRepository;

    @Autowired
    private TestService testService;

    @Test
    public void getByName() {
        //Given
        List resultList = new ArrayList<>();
        resultList.add(new TestTable(1L, "test"));

        given(testRepository.findByName("test")).willReturn(resultList);

        //When
        List result = testService.getTestTableByName("test");

        //Then
        assertThat(result).isEqualTo(resultList);
    }
}

- result

7:16:27: External tasks execution finished 'cleanTest test --tests org.blog.test.service.TestServiceTest'.