CODEWITHSUNDEEP
javaspringspring-bootspring-boot-test
Aimnaud
Aimnaud

Reputation: 23

ServletContext cannot open properties file when executing JUnit test

I'm testing a REST controller using JUnit 4 and MockMvc. When I've written the test a few weeks ago, everything worked as expected. I've done some modifications in my code but I didn't change the JUnit test. Now, when I'm trying to run my tests, I have the error: 

Caused by: java.io.FileNotFoundException: Could not open ServletContext resource [/application.properties]

Here is my code:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = MyServerApplication.class)
@SpringBootTest
@Transactional
public class MovieControllerTest {

    private MockMvc mockMvc;

    @Autowired
    private MovieRepository movieRepository;

    @Autowired
    private WebApplicationContext wac;

    @Before
    public void setup() {
        this.mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();
    }

    // Some tests
}

And my main class:

@SpringBootApplication
public class MyServerApplication{

    public static void main(String[] args) {
        SpringApplication.run(MyServerApplication.class, args);
    }
}

My application.properties file is located in src/main/resources. I didn't move this file, I didn't do anything but add some code in my services and add some properties in my file.

I read SO questions & doc, and tried these solutions:

I didn't try all of these solutions at the same time of course, I removed the added code after each failure.

I can still run my code without any issue though, only the test class results in FileNotFoundException.

How to solve this? And why do I have an issue with the test class but everything working fine when I run my server?

Upvotes: 2

Views: 1181

Answers (1)

M. Deinum
M. Deinum

Reputation: 124461

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = MyServerApplication.class)
@SpringBootTest
@Transactional
public class MovieControllerTest { ... }

This is what you have on your test class. When using @SpringBootTest you shouldn't be using @ContextConfiguration (see testing chapter of the Spring Boot Reference Guide). 

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest
@Transactional
public class MovieControllerTest { ... }

I would also suggest you use Spring Boot for testing instead of trying to do things manually. For mock mvc testing Spring Boot applications there are special slices and setup already done for you.

To enable this add @AutoConfigureMockMvc to your test and put @Autowired on the MockMvc field (and remove the setup in your @Before method).

Upvotes: 1

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