Update README.md com a anotação @AutoConfigureTestDatabase #5
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A notação pode ser utilizada para configurar um banco de dados de teste que substitui o DataSource definido pela aplicação ou automaticamente configurado para fins de testes.
Um exemplo é quando estamos testando a camada de repository, utilizando o @DataJpaTest ele vai subir uma instância em memória do H2 database. Para utilizarmos um banco de dados real em um container por exemplo, usamos essa annotation para dizer que o banco que será utilizado no teste será o apontado no DataSource (application.properties ou .yml)
Link para Doc da anotação