java - Junit 5 looking for actual environmental configuration to run the test

Question

My project is using spring-boot, sping-data-jpa, spring-data-rest, hibernate

I have updated to spring boot 2.3.1.

My previous test cases are on Junit 4, I am migrating to Junit 5.

When I run my test case with junit 5 it is looking for actual environmental configurations like datasource, hibernate:dialect with Junit 4, it was not looking for it.

Please find Junit 4 and Junit 5 test class for comparison

Junit 4 Test

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.MockitoJUnitRunner;
import org.springframework.boot.test.context.Sp
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.ActiveProfiles;

@RunWith(MockitoJUnitRunner.class)
@ActiveProfiles("unit-test")
@SpringBootTest
public class MyServiceTest {

    @Mock
    private MyRepository myRepository;

    @InjectMocks
    private MyServiceTest myServiceTest;

    @Before
    public void setup() {

       MyData myData = new MyData();
       myData.setName("testName");
       myData.setNumber()
    
       Mockito.when(myRepository.findMyDataByNameAndNumber(
                Mockito.eq("testName"), Mockito.eq("10101010")).thenReturn(Optional.ofNullable(myData));
    }
    
    @Test
    void getMyData(){
        myServiceTest.getDataByNameAndNumber("testName", "10101010")
        
        Mockito.verify(myRepository, times(1))
                .findMyDataByNameAndNumber(Mockito.eq("testName"), Mockito.eq("10101010"));
    }
}

Junit 5 Test

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.junit.jupiter.MockitoExtension;
import org.springframework.boot.test.context.SpringBootTest;

@ExtendWith(MockitoExtension.class)
@SpringBootTest
@ActiveProfiles("unit-test")
public class MyServiceTest {

    @Mock
    private MyRepository myRepository;

    @InjectMocks
    private MyServiceTest myServiceTest;

    @BeforeEach
    public void setup() {

       MyData myData = new MyData();
       myData.setName("testName");
       myData.setNumber()
    
       Mockito.when(myRepository.findMyDataByNameAndNumber(
                Mockito.eq("testName"), Mockito.eq("10101010")).thenReturn(Optional.ofNullable(myData));
    }
    
    @Test
    void getMyData(){
        myServiceTest.getDataByNameAndNumber("testName", "10101010")
        
        Mockito.verify(myRepository, times(1))
                .findMyDataByNameAndNumber(Mockito.eq("testName"), Mockito.eq("10101010"));
    }
}

application.yml

spring:
  profiles.active: development

---
spring:
  profiles: development
  jpa:
    hibernate:
      ddl-auto: none
      naming:
        implicit-strategy: org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy
    properties:
      hibernate:
        dialect: org.hibernate.dialect.Oracle10gDialect
  datasource:
    driver-class-name: oracle.jdbc.OracleDriver 

---
spring:
  profiles: unit-test
  jpa:
    show-sql: true
    hibernate:
      ddl-auto: create-drop
  datasource:
    url: jdbc:h2:mem:TEST;MODE=Oracle;INIT=CREATE SCHEMA IF NOT EXISTS TEST
    platform: h2
    continue-on-error: true

I am really not sure what I missed in the migration?

Error log

INFO  [2020-08-04T19:44:04.082+0530] context.SpringBootTestContextBootstrapper ||${fallback:user}|Neither @ContextConfiguration nor @ContextHierarchy found for test class [com.service.MyServiceTest], using SpringBootContextLoader|${fallback:correlation||${fallback:origin}|${sys:instanceName}| -o
INFO  [2020-08-04T19:44:04.105+0530] support.AbstractContextLoader ||${fallback:user}|Could not detect default resource locations for test class [com.service.MyServiceTest]: no resource found for suffixes {-context.xml, Context.groovy}.|${fallback:correlation}||${fallback:origin}|${sys:instanceName}| -o
INFO  [2020-08-04T19:44:04.107+0530] support.AnnotationConfigContextLoaderUtils ||${fallback:user}|Could not detect default configuration classes for test class [com.service.MyServiceTest]: MyServiceTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration.|${fallback:correlation}||${fallback:origin}|${sys:instanceName}| -o
INFO  [2020-08-04T19:44:04.655+0530] context.SpringBootTestContextBootstrapper ||${fallback:user}|Found @SpringBootConfiguration com.MyApplication for test class

org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1855) ~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1792) ~[spring-beans-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    ... 81 more
Wrapped by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.17.Final.jar:5.4.17.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.7.RELEASE.jar:5.2.7.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ~[spring-orm-5.2.7.RELEASE.ja

Answer 1

Firstly looking at your code you are injecting the mocks in to the test class rather than the actual service. Is this how your actual test looks or have you just copied this in so as to not share your actual code?

@InjectMocks
private MyServiceTest myServiceTest;

Secondly this is a unit test so remove the @SpringBootTest annotation. It is adding unnecessary overhead and is probably causing the error through lack of configuration for code you are not actually testing having mocked the repository anyway.