Spring Boot集成Cucumber测试调用接口时Mock服务不生效问题求助

你在Steps类中手动创建的Mock对象没有注册到Spring IoC容器中，Controller层注入的是Spring默认初始化的真实DemoService实例，和你本地创建的Mock是完全独立的两个对象，因此接口调用不会触发Mock逻辑。

使用Spring Boot提供的@MockBean注解替换手动Mock的代码，该注解会自动将容器中对应类型的原生Bean替换为Mockito Mock实例，同时将Mock实例注入到测试类中供你配置Stub逻辑。

package com.example.demo

import com.example.demo.service.DemoService
import io.cucumber.java.en.Then
import io.cucumber.java.en.When
import io.cucumber.spring.CucumberTestContext.SCOPE_CUCUMBER_GLUE
import io.restassured.RestAssured
import org.mockito.Mockito
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.boot.test.mock.mockito.MockBean
import org.springframework.boot.web.server.LocalServerPort
import org.springframework.context.annotation.Scope
import org.springframework.test.context.ContextConfiguration

@ContextConfiguration(classes = [DemoApplication::class])
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@Scope(SCOPE_CUCUMBER_GLUE)
class Steps {

    @LocalServerPort
    var port: Int = 0

    // 替换手动Mock，使用@MockBean注入Spring容器托管的Mock实例
    @MockBean
    private lateinit var demoService: DemoService


    @When("call the end point")
    fun callTheEndPoint() {
        val msg: Message = Message(id = "2", text = "test")
        Mockito.`when`(demoService.getMessage()).thenReturn(msg)
        RestAssured.port = port
        RestAssured.baseURI = "http://localhost"
        var res = RestAssured.`when`().get("/").then().extract().body().`as`(Message::class.java)
        println("When is called: " + res.text)
    }

    @Then("retrieve these data")
    fun retrieveData() {
        println("Then is called")
    }
}

接口调用后返回的Message对象应为你预设的id="2"、text="test"，你可以在Then步骤中添加断言验证结果正确性。

内容的提问来源于stack exchange，提问作者user1608962