spring-boot/spring-boot-test-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

{
  "properties": [
    {
      "name": "spring.test.database.replace",
      "type": "org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase$Replace",
      "description": "Type of existing DataSource to replace.",
      "defaultValue": "any"
    }
  ]
}