这是在 Spring Boot 中进行集成测试的最佳方法吗？

Question

Inside a project, I have a service A that uses beans B1 and B2. If I want to create an integration test for the service A, I usually create the test class like this:

@SpringBootTest(classes = {A.class, B1.class, B2.class})
@ActiveProfiles("test")
class AIntegrationTest { 
...
}

My question: is this approach fine or is there a clean solution?

Answer 1

Ideally, you'd want to get rid of classes = {A.class, B1.class, B2.class} and just use the @SpringBootTest annotation. This will ensure that the same context will be built for test and for production .

What is more, the context will be cached by the spring test runner in this case and will be reused by tests, which require the same kind of context.

Answer 2

Not sure you even need to define the beans in the @SpringBootTest annotation. either @Mock the classes with mockito to @Autowire them

// here's an example from the web
@RunWith(SpringRunner.class)
@SpringBootTest(
  SpringBootTest.WebEnvironment.MOCK,
  classes = Application.class)
@AutoConfigureMockMvc
@TestPropertySource(
  locations = "classpath:application-integrationtest.properties")
public class EmployeeRestControllerIntegrationTest {

    @Autowired
    private MockMvc mvc;

    @Autowired
    private EmployeeRepository repository;

    // write test cases here
}

Answer 3

Here's another example from the spring docs.

package com.example.testingweb;

import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;

import static org.assertj.core.api.Assertions.assertThat;

@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
public class HttpRequestTest {

    @LocalServerPort
    private int port;

    @Autowired
    private TestRestTemplate restTemplate;

    @Test
    public void greetingShouldReturnDefaultMessage() throws Exception {
        assertThat(this.restTemplate.getForObject("http://localhost:" + port + "/",
                String.class)).contains("Hello, World");
    }
}

Answer 4

I would recommend to avoid writing integration tests using SpringBoot for multiple reasons, including but not limited to the time it takes to run integration tests. Some of the problems can be read here https://medium.com/swlh/the-devil-that-is-springboottest-68b7f4148bb6

The best approach would be to have an application deployed in test environment and create a suite of automated tests using Cypress , Postman etc.