AssertEquals为两个相同的对象返回false

Question

我有两个用户定义的对象,其内容相同.但是assertsEquals inturn equals方法为这些对象返回false.

这里是堆栈跟踪,它包含对象的toString内容.

java.lang.AssertionError: expected: com.xyz.test.model.VerificationToken<VerificationToken(id=null, token=, user=User(userId=null, username=null, email=null, password=null, isActive=0, roles=null, imageLocation=null, enabled=false, isAccountNonLocked=true), expiryDate=Sat Dec 22 22:48:49 IST 2018)> but was: com.xyz.test.model.VerificationToken<VerificationToken(id=null, token=, user=User(userId=null, username=null, email=null, password=null, isActive=0, roles=null, imageLocation=null, enabled=false, isAccountNonLocked=true), expiryDate=Sat Dec 22 22:48:49 IST 2018)>
    at org.junit.Assert.fail(Assert.java:88)
    at org.junit.Assert.failNotEquals(Assert.java:834)
    at org.junit.Assert.assertEquals(Assert.java:118)
    at org.junit.Assert.assertEquals(Assert.java:144)
    at ....

我对应的课程如下.这有lombak的@data注释,它生成Equals方法.

@Entity
@Data
@AllArgsConstructor
@NoArgsConstructor
public class VerificationToken implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = 8788934708305097680L;

    private static final int EXPIRATION = 60 * 24;

    @Id
    private Long id;

    private String token;

    private User user; 

    private Date expiryDate;

    public Date calculateExpiryDate(int expiryTimeInMinutes) {
        Calendar cal = Calendar.getInstance();
        cal.setTime(new Date());
        cal.add(Calendar.MINUTE, expiryTimeInMinutes);
        return new Date(cal.getTime().getTime());
    }

}

我的用户类如下.这也有@Data Annotation,它生成Equals方法

@Entity
@Table(name = "user")
@Data
public class User implements Serializable {

    /**
     * 
     */
    private static final long serialVersionUID = -6480423780555564185L;

    @Id
    private Integer userId;
    private String username;
    private String email;
    @JsonIgnore
    private String password;

    private int isActive;

    private Set<Role> roles;
    private String imageLocation;   
    private boolean enabled;
    private boolean isAccountNonLocked;

    public User() {
        super();
        this.enabled=false;
        this.isAccountNonLocked= true;
    }

    public User(User user) {
        this.username = user.getUsername();
        this.password = user.getPassword();
        this.isActive = user.getIsActive();
        this.roles = user.getRoles();
        this.imageLocation=user.getImageLocation();
        this.enabled= user.enabled;
        this.isAccountNonLocked = user.isAccountNonLocked;
    }

}

我的角色类如下:这也有@Data Annotation,它生成Equals方法

@Entity
@Table(name = "role")
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Role {

    @Id
    private Integer roleId;
    private String role;

}

这是我的测试用例,其中包含一个对象实例化.

@Test
        public void testCreateVerificationToken() {
            User user = new User();
            String token = new String();
            VerificationToken myToken = new VerificationToken();
            myToken.setToken(token);
            myToken.setUser(user);
            myToken.setExpiryDate(myToken.calculateExpiryDate(24*60));
            ArgumentCaptor<VerificationToken> entityCaptor = ArgumentCaptor.forClass(VerificationToken.class);
            when(mocktokenRepository.save(entityCaptor.capture())).thenReturn(myToken);
            verificationTokenServiceImpl.createVerificationToken(user, token);

            assertEquals(entityCaptor.getValue(),myToken);
        }

另一个对象实例化在此代码中发生.

@Override
        public void createVerificationToken(User user, String token) {
            VerificationToken myToken = new VerificationToken();
            myToken.setToken(token);
            myToken.setUser(user);
            myToken.setExpiryDate(myToken.calculateExpiryDate(24*60));
            tokenRepository.save(myToken);
        }

我无法理解为什么两个对象被认为是不相等的.如果需要,我想提供更多细节.请帮忙.

提前致谢.

Answer 1

您要比较的两个对象在expiryDate字段中具有不同的值.您正在new Date()使用calculateExpiryDate方法为代码中不同点的两个对象生成它们.他们不平等.请注意,日期的精度是毫秒.我不建议您更改calculateExpiryDate要传递的测试的实现,而是可以设置expiryDate为硬编码的Date值.