Springboot test not loading properties from application.yml - spring

Question

I have a springboot test case trying to test a method which has some dependency on env properties.
#SpringBootTest(classes = ABCApi.class)
#AutoConfigureMockMvc
class sampleTest {
#Autowired
private WebApplicationContext context;
protected MockMvc mockMvc;
#BeforeEach
public void setup() {
mockMvc = MockMvcBuilders
.webAppContextSetup(context)
.apply(SecurityMockMvcConfigurers.springSecurity())
.build();
}
#InjectMocks
private EmployeeServiceImpl employeeServiceImpl;
#Test
void testEmployeeServiceImpl() {
String summary = "summary";
String description = "description";
String response = employeeServiceImpl.createIssue(summary, description);
verify(EmployeeService, times(1)).createIssue(summary, description);
}
}
Note: I don't need to test the response. All I need is to make sure that the method is called. The response will be null because of some unavailable parameters.
Below is the EmployeeServiceImpl code which has all properties listed. I have the application.yml file in src/test/resources, which is the right location. But while debugging the test case above, the below class is not loading any properties from application.yml sitting in test folder structure.
#Service
public class EmployeeServiceImpl {
#Value("${emp.username}")
private String username;
#Value("${emp.password}")
private String password;
#Value("${emp.url}")
private String url;
#Override
public String createIssue(String summary, String description) {
EmpRestClient client = setEmpClient();
EmpSuperClient empSuperClient = client.getProject();
IssueInput newIssue = buildNewIssueInput(description, summary);
return empSuperClient.createIssue(newIssue).claim().getKey();
}
private EmpRestClient setEmpClient() {
return new EmpRestClientFactory()
.createWithBasicHttpAuthentication(URI.create(url), username, password);
}
I know that these properties are not supposed to be in service layer and instead should be loaded as a bean in config class which will be a future improvement.
How do I fix that test case?

Answer 1

Use constructor injection to inject dependencies. It makes code easy to test.
private final String username;
private final String password;
private final String url;
public EmployeeServiceImpl (#Value("${emp.username}") final String username, #Value("${emp.password}") final String password,
#Value("${emp.url}") String url) {
this.username = username;
this.password = password;
this.url = url;
}
Now you can use the constructor to create EmployeeServiceImpl in your test class.
E.g.
new EmployeeServiceImpl ("username", "password", "http://localhost:8080")