WebMvc 测试

@SpringBootTest(
        classes = SampleApplication.class,
        // 启用配置文件中定义的端口号
    	// 也可以通过枚举值切换为随机端口等
        webEnvironment = SpringBootTest.WebEnvironment.DEFINED_PORT
)

// 1. server.port 或 local.server.port
@Value("${server.port}")

// 2. @Value("${local.server.port}") 等价注解
@LocalServerPort

// 3. 环境变量
@Autowired
Environment environment;
this.environment.getProperty("server.port")

@SpringBootTest
@AutoConfigureMockMvc
class WebTest {
    @Autowired
    MockMvc mockMvc;

    void testMockMvc() {
        String expected = "预期的 json 字符串";
        mockMvc.perform(
                            MockMvcRequestBuilders
                                    .get("路由")
                    )
                    .andExpect(MockMvcResultMatchers.status().isOk())
                    .andExpect(MockMvcResultMatchers.content().json(expected))
                    .andDo(MockMvcResultHandlers.print());
    }
}