@RunWith(Cucumber.class)和@Autowired MockMvc

Question

我尝试在Cucumber测试中使用MockMvc,但没有解决Spring依赖关系.

我创建了这个类:

@RunWith(Cucumber.class)
@CucumberOptions(format = "pretty", features = "src/test/resources/features"})
@SpringBootTest
public class CucumberTest {

}

运行黄瓜功能

这个课程的步骤:

@WebMvcTest(VersionController.class)
@AutoConfigureWebMvc
public class VersionControllerSteps {

    @Autowired
    private MockMvc mvc;

    private MvcResult result;

    @When("^the client calls /version$")
    public void the_client_issues_GET_version() throws Throwable {
        result = mvc.perform(get("/version")).andDo(print()).andReturn();
    }

    @Then("^the client receives status code of (\\d+)$")
    public void the_client_receives_status_code_of(int statusCode) throws Throwable {
        assertThat(result.getResponse().getStatus()).isEqualTo(statusCode);
    }

    @And("^the client receives server version (.+)$")
    public void the_client_receives_server_version_body(String version) throws Throwable {
        assertThat(result.getResponse().getContentAsString()).isEqualTo(version);
    }
}

但这抛出异常:

java.lang.NullPointerException
at com.example.rest.VersionControllerSteps.the_client_issues_GET_version(VersionControllerSteps.java:30)
at ?.When the client calls /version(version.feature:8)

这是.feature:

Feature: the version can be retrieved

  As a api user
  I want to know which api version is exposed
  In order to be a good api user

  Scenario: client makes call to GET /version
    When the client calls /version
    Then the client receives status code of 200
    And the client receives server version 1.0

如何配置我的测试使用黄瓜和弹簧启动？

提前致谢.

Answer 1

从您的代码清单和错误日志来看，尚不清楚这是 cucumber+spring 设置的问题还是只是应用程序错误。

堆栈跟踪指向第 30 行，该行抛出空指针异常。从您的代码清单来看，这可能是由于result.getResponse().getContentAsString()说明造成的。

可能值得检查您的控制器是否确实返回了主体。例如，您可能需要用注释标记返回@ResponseBody值

   @RequestMapping(
     value = "/campaigns/new",
     method = RequestMethod.GET,
    )
    public @ResponseBody String vers() {
        return "1.0.1";
    }