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Flyway JUnit 5 Extensions

This extensions allows you to clean / migrate your database using Flyway during testing.

How to use it?

Add the following dependency to your project:

<dependency>
  <groupId>com.radcortez.flyway</groupId>
  <artifactId>flyway-junit5-extension</artifactId>
  <version>2.1.0</version>
  <scope>test</scope>
</dependency>

NOTE:

This project depends on:

  • Flyway 10.12.0
  • JUnit Jupiter 5.10.2

Add the @FlywayTest annotation to your test class or method. By default, Flyway will perform the migrate action before each test execution and the clean action after the test. This can be disabled by turning clean = false in the @FlywayTest annotation.

The only required information in the @FlywayTest annotation is the database information that you can supply using the inner @DataSource annotation. In the @DataSource annotation you can specify the url, username and password to connect to a running database:

@FlywayTest(@DataSource(url = "jdbc:h2:mem:test"))
class JUnit5Test {

}

Or you can implement a DataSourceProvider and return a DataSourceInfo with the database connection details:

@FlywayTest(@DataSource(JUnit5Test.H2DatasourceProvider.class))
class JUnit5Test {

    static class H2DatasourceProvider implements DataSourceProvider {
        @Override
        public DataSourceInfo getDatasourceInfo(final ExtensionContext extensionContext) {
            return DataSourceInfo.config("jdbc:h2:mem:test;MODE=PostgreSQL;DB_CLOSE_DELAY=-1");
        }
    }
}

The DataSourceProvider will always take priority over url, username and password in the @DataSource annotation.

The @FlywayTest annotation can also be placed in a method.

@FlywayTest(additionalLocations = "db/additionalLocation")
void additionalLocations() throws Exception {

}

When both the class and the method are annotated, the annotations metadata is merged with the method annotation taking priority over the class annotation.

Conventions

The extension uses the default path to load migration scripts from Flyway, set in resources/db/migration.

If you want to add specific database migrations to a particular test, you can place the migration files in resources/db/ plus the fully qualified name of the test as a path. For instance com/radcortez/flyway/test/junit/H2LocationTest.

Additional migration locations can be defined using the additionalLocations metadata in the @FlywayTest annotation. This will not override the default locations, but just add a location for the migration files.

Meta Annotations

You can also place the @FlywayTest annotation in a meta annotation and then use it in the test class.

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@FlywayTest(value = @DataSource(url = "jdbc:h2:mem:test"))
public @interface H2 {

}

@H2
class H2MetaAnnotationTest {
    
}

The @H2 annotation is already available in the extension, but you need to remember to add the H2 dependency to your project to be able to use an H2 database:

<dependency>
  <groupId>com.h2database</groupId>
  <artifactId>h2</artifactId>
  <version>2.2.224</version>
  <scope>test</scope>
</dependency>