Abstract ValueObject class with EqualsBuilder and HashCodeBuilder

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Have an abstract ValueObject class that defines equals and hashCode 
accordingly using EqualsBuilder and HashCodeBuilder:

import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;

public abstract class ValueObject {

    @Override
    public final boolean equals(Object obj) {
        return EqualsBuilder.reflectionEquals(this, obj);
    }

    @Override
    public final int hashCode() {
        return HashCodeBuilder.reflectionHashCode(this);
    }

    @Override
    public String toString() {
        return ToStringBuilder.reflectionToString(this);
    }

}
2. And a simple subclass:

public class A extends ValueObject {

    private final int a;
    private final int b;

    public A(int a, int b) {
        this.a = a;
        this.b = b;
    }

    public int getA() {
        return this.a;
    }

    public int getB() {
        return this.b;
    }

}
3. Being tested with EqualsVerifier like this:

public class ATest {

    @Test
    public void equalsContract() throws Exception {
        EqualsVerifier.forClass(A.class)
            .withRedefinedSuperclass()
            .allFieldsShouldBeUsed()
            .verify();
    }

}


What is the code (equals method, hashCode method, relevant fields) that
triggers the problem?
Available in the first answer.


What error message does EqualsVerifier give?
java.lang.AssertionError: Significant fields: all fields should be used, but A 
has not defined an equals method.

This exception is not thrown if I don't set allFieldsShouldBeUsed, but then the 
test wouldn't guarantee that all fields are indeed being used.


What stacktrace does EqualsVerifier print, when called with the debug()
method?
java.lang.AssertionError: Significant fields: all fields should be used, but A 
has not defined an equals method.
For more information, go to: http://www.jqno.nl/equalsverifier/errormessages
    at nl.jqno.equalsverifier.EqualsVerifier.handleError(EqualsVerifier.java:378)
    at nl.jqno.equalsverifier.EqualsVerifier.verify(EqualsVerifier.java:361)

What did you expect?
Passing test.


What version of EqualsVerifier are you using?
1.5.1

Please provide any additional information below.
See conversation in google group:
https://groups.google.com/forum/#!topic/equalsverifier/StWs2oybPAo

Original issue reported on code.google.com by andre.sc...@gmail.com on 8 Jan 2015 at 3:31

[GoogleCodeExporter]

As discussed on the mailinglist as well.

Original comment by jan.ouw...@gmail.com on 9 Jan 2015 at 8:32

• Changed state: Accepted
• Added labels: ****
• Removed labels: ****

[GoogleCodeExporter]

Fixed in version 1.6.

Original comment by jan.ouw...@gmail.com on 17 Jan 2015 at 4:27

• Changed state: Fixed
• Added labels: ****
• Removed labels: ****

[GoogleCodeExporter]

Nice Job, Jan! Thank you!

Original comment by andre.sc...@gmail.com on 17 Jan 2015 at 8:03

• Added labels: ****
• Removed labels: ****