How to re-create database before each test in Spring?

Question

My Spring-Boot-Mvc-Web application has the following database configuration in application.properties file:

spring.datasource.url=jdbc:h2:tcp://         


        

Answer 1

Using the accepted answer in Spring-Boot 2.2.0, I was seeing JDBC syntax errors related to constraints:

Caused by: org.h2.jdbc.JdbcSQLSyntaxErrorException: Constraint "FKEFFD698EA2E75FXEERWBO8IUT" already exists; SQL statement: alter table foo add constraint FKeffd698ea2e75fxeerwbo8iut foreign key (bar) references bar [90045-200]

To fix this, I added @AutoConfigureTestDatabase to my unit test (part of spring-boot-test-autoconfigure):

import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase.Replace;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.annotation.DirtiesContext.ClassMode;
import org.springframework.boot.test.context.SpringBootTest;
import org.junit.runner.RunWith;
import org.springframework.test.context.junit4.SpringRunner;


@RunWith(SpringRunner.class)
@SpringBootTest
@DirtiesContext(classMode = ClassMode.BEFORE_EACH_TEST_METHOD)
@AutoConfigureTestDatabase(replace = Replace.ANY)
public class FooRepositoryTest { ... }