How to check all fields in 2 objects are equal using reflectionEquals?

Question

I am writing a JUnit test and I want to test that all the fields in 2 objects are equal.

I have tried the following:

    @Test
    public void testPersonObjectsAreEqual(){
      
        Person expectedPerson = new Person("100100", "sampleName", "sampleAddress");
        Person actualPersonReturned = repository.getPersonById("100100");
        
        Assert.assertTrue(EqualsBuilder.reflectionEquals(expectedPerson, actualPersonReturned));
    }

But the test is failing, even though the fields in the 2 objects are the same.

They are both have: 100100 , sampleName and sampleAddress

Answer 1

In your example, you need to override the equals method in your class Person (returning true if the attributes of the Person object are all equal). For example:

public class Person {

    private String name;
    private String surname;

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Person other = (Person) obj;
        if (name == null) {
            if (other.name != null)
                return false;
        } else if (!name.equals(other.name))
            return false;
        if (surname == null) {
            if (other.surname != null)
                return false;
        } else if (!surname.equals(other.surname))
            return false;
        return true;
    }

}

You can do it automatically with an IDE, the previous snippet was generated automatically with Eclipse.