Is there a way to run MySQL in-memory for JUnit test cases?

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I'm just trying to add test cases for services accessing a MySQL DB, and I would like to recreate the whole schema (and for some scenarios also just use a MySQL dump file with the data needed for each test case). I was looking around and found some guys using SQLite / H2 and others to do this, but I'm just wandering if there is any way to run MySQL in-memory so I don't need to worry about anything specific to the the MySQL dialect I might be using on our services.

6 Answers

I would suggest to use docker based mysql/postgres/DB testcontainer.

Pom.xml

    <dependency>
        <groupId>org.testcontainers</groupId>
        <artifactId>postgresql</artifactId>
        <version>1.15.1</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.testcontainers</groupId>
        <artifactId>junit-jupiter</artifactId>
        <version>1.15.1</version>
        <scope>test</scope>
    </dependency>

XyzIT.java

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@ActiveProfiles("test")
@Testcontainers

Application-test.yml

  datasource:
    initialization-mode: always
    schema: classpath*:schema-anyDb.sql  #initial sql script to createDB
    url: jdbc:tc:postgresql:11.9:///
  jpa:
    hibernate.ddl-auto: none
    properties:
      hibernate:
        dialect: org.hibernate.dialect.PostgreSQLDialect
        format_sql: true
        default_schema: public
    show-sql: true
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