Re: [MO-java-dev] Is IsEqual testing for equality in the right order?

[Nat P. <nat...@b1...>]

> According to the Java equals protocol, the expressions arg.equals(_object)
> and _object.equals(arg) must act the same, so it makes no difference.  If
> the two expressions act differently, then that is a bug in the
> implementation of the class of arg or _object.

I should have also said: if you want different behaviour, you can always
write a new constraint by implementing the Constraint interface.  This is
exactly the situation that the Constraint interface was designed for.

Cheers,
            Nat.

_______________________
Dr. Nathaniel Pryce
B13media Ltd.
http://www.b13media.com
+44 (0)7712 526 661


----- Original Message -----
From: "Nat Pryce" <nat...@b1...>
To: "Vincent Tence" <Vin...@ge...>; "'Mockobjects-Java-Dev'"
<moc...@li...>
Sent: Monday, June 02, 2003 11:07 PM
Subject: Re: [MO-java-dev] Is IsEqual testing for equality in the right
order?


>
> Cheers,
>             Nat.
> _______________________
> Dr. Nathaniel Pryce
> B13media Ltd.
> http://www.b13media.com
> +44 (0)7712 526 661
>
> ----- Original Message -----
> From: "Vincent Tence" <Vin...@ge...>
> To: "'Mockobjects-Java-Dev'" <moc...@li...>
> Sent: Monday, June 02, 2003 10:57 PM
> Subject: [MO-java-dev] Is IsEqual testing for equality in the right order?
>
>
> > Hi,
> >
> > I noticed that the IsEqual constraint tests for equality by comparing
the
> > expected value against the actual value. IIRC it used to be the other
way
> > around with "static" mocks - i.e. expected.equals(actual) - so you could
> > deal with legacy code not implementing equals correctly. It has helped
me
> in
> > a number of situtations. Any reason why this has changed?
> >
> > Extract from IsEqual :
> >
> >     public boolean eval( Object arg ) {
> >     if(arg instanceof Object[]) {
> >     arg = Arrays.asList((Object[])arg);
> >     }
> >         return arg.equals(_object);
> >     }
> >
> > It could be _object.equals(arg) or am I missing something?
> >
> > Thanks,
> > Vincent
> >
> >
> >
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