Spring Boot: How to inject server.contextPath from application.properties into MockServletContext - spring-boot

Question

In application.properties I configured server.contextPath=/app-service.
Unfortunately, this values is not present in the test context:
#RunWith(SpringJUnit4ClassRunner.class)
#SpringBootTest(classes = { Application.class, SwaggerConfig.class })
#WebAppConfiguration
public class Swagger2MarkupTest {
#Autowired
private WebApplicationContext context;
private MockMvc mockMvc;
#Before
public void setUp() {
this.context.getServletContext().getContextPath(); // null
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.context).build();
}
}
I need the contextPath for the Swagger Docket which uses per default
springfox.documentation.spring.web.paths.RelativePathProvider which determines the contextPath by
#Override
protected String applicationPath() {
return isNullOrEmpty(servletContext.getContextPath()) ? ROOT : servletContext.getContextPath();
}
It is all about the RelativePathProvider which gets called much earlier than the unit test. It is not about injecting the contextPath into the unit test itself since it is to late as the RelativePathProvider already called servletContext.getContextPath() for the SwaggerConfiguration.

Answer 1

You can achive that in several ways, here are two of them:
Inject spring Environment and get the property value:
#RunWith(SpringJUnit4ClassRunner.class)
#SpringBootTest(classes = { Application.class, SwaggerConfig.class })
#WebAppConfiguration
public class Swagger2MarkupTest {
#Autowired
private WebApplicationContext context;
#Autowired
private Environment environment;
private MockMvc mockMvc;
#Before
public void setUp() {
environment.getProperty("server.contextPath"); // should return /app-service
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.context).build();
}
}
Inject it using #Value:
#RunWith(SpringJUnit4ClassRunner.class)
#SpringBootTest(classes = { Application.class, SwaggerConfig.class })
#WebAppConfiguration
public class Swagger2MarkupTest {
#Autowired
private WebApplicationContext context;
#Value("server.contextPath")
private String contextPath; // should populate with /app-service
private MockMvc mockMvc;
#Before
public void setUp() {
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.context).build();
}
}