package com.example.demo; import org.junit.jupiter.api.Test; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.TestPropertySource; @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT) @TestPropertySource(properties = {"spring.main.allow-bean-definition-overriding=true"}) class DeveloperApplicationTests { @Test void contextLoads() { } }