Hashmap 在 Spring Boot 中包含键 junit

Question

我有以下class

 public class EmployeeService{
 
   private final EmployeeRepository employeeRepo;
   private final Map<String, Employee> cache;

   @Autowired
   public EmployeeService(EmployeeRepository employeeRepo, Map<String, Employee> cache){
     this.employeeRepo = employeeRepo;
     this.cache = cache;
   }

   public void loadFromDB(){
     //repo call
     cache.put("123", {employee object})
   }
 }

我想为此编写一个 junit，我需要检查该值是否已插入到缓存中。我在下面尝试过，但缓存中没有任何值。

@Mock
private EmployeeRepository employeeRepo;

@Mock
private Map<String, Employee> cache;

@InjectMocks
private EmployeeService employeeService;

@BeforeEach
public void setUp() throws Exception {
    MockitoAnnotations.initMocks(this);
    employeeService = new EmployeeService(employeeRepo, cache);
}

@Test
public void shouldLoadDataFromDBtoCache(){
    when(employeeRepo.findActiveEmployee()).thenReturn(buildDataFromDB());
    EmployeeService.loadFromDB();
    Assertions.assertFalse(cache.isEmpty());
    //Assertions.assertTrue(cache.containsKey("1625"));
    //Assertions.assertTrue(cache.containsKey("1525"));
    //Assertions.assertFalse(cache.containsKey("1425"));
}

当我检查缓存映射的大小为零时，cache.containsKey() 得到 assertion error。

Assertions.assertFalse(cache.isEmpty()); // this is success.

如何测试 hashmap containsKey 如上。

Answer 1

据我所知，您需要做的最小改动如下：

@Mock
private EmployeeRepository employeeRepo;

private Map<String, Employee> cache = new HashMap<>();

private EmployeeService employeeService = new EmployeeService(employeeRepo, cache);

@Test
public void shouldLoadDataFromDBtoCache(){
    when(employeeRepo.findActiveEmployee()).thenReturn(buildDataFromDB());
    employeeService.loadFromDB();
    Assertions.assertFalse(cache.isEmpty());
    //Assertions.assertTrue(cache.containsKey("1625"));
    //Assertions.assertTrue(cache.containsKey("1525"));
    //Assertions.assertFalse(cache.containsKey("1425"));
}

Hashmap 在 Spring Boot 中包含键 junit

Hashmap containskey junit in Spring Boot

java

spring-boot

junit4