FIELDS_ARE_NEVER_NULL doesn't work recursively

[GoogleCodeExporter]

EqualsVerifier succeeds for ClassB, but not for ClassA. Apparently,
Feature.FIELDS_ARE_NEVER_NULL only works for the class that is verified,
and not for its fields.


final class ClassA {
    private final ClassB b;

    public ClassA(ClassB b) {
        if (b == null) {
            throw new NullPointerException("b");
        }

        this.b = b;
    }

    @Override 
    public int hashCode() {
        return b.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return (obj instanceof ClassA) && ((ClassA) obj).b.equals(b);
    }
}

final class ClassB {
    private final Object o;

    public ClassB(Object o) {
        if (o == null) {
            throw new NullPointerException("o");
        }

        this.o = o;
    }

    @Override
    public int hashCode() {
        return o.hashCode();
    }

    @Override
    public boolean equals(Object obj) {
        return (obj instanceof ClassB) && o.equals(((ClassB) obj).o);
    }
}

Original issue reported on code.google.com by [email protected] on 24 Jan 2010 at 8:07

[GoogleCodeExporter]

Original comment by [email protected] on 24 Jan 2010 at 8:19

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