#13 Predicates as expected values for static mocks

[Max Kulkin]

Add the ability to provide IPredicate object as an
expected parameter in any MockObject.

E.g.,I faced problem to provide IsAnything() predicate
to MockDataParameter.Value.

[Griffin Caprio]

Logged In: YES
user_id=397472

Could you be more specific as to this request.

Do you mean using IPredicates in the static part of the library?

Perhaps some pseudo code on what you are trying to do would help.

Griffin

[Max Kulkin]

Logged In: YES
user_id=358624

Yes! I was surprised, that IPredicate defined only in
DotNetMock.Dynamic namespace, not in DotNetMock namespace.
It's a very handy thing.

MockDataParameter param = new MockDataParameter();
param.DbType = DbType.String;
param.Value = new DotNetMock.Dynamic.Predicates.IsAnything();

[Max Kulkin]

Logged In: YES
user_id=358624

Oops.. Sorry for typo.
I really meant this:

MockDataParameter param = new MockDataParameter();
param.SetExpectedType( DbType.String );
param.SetExpectedValue( new
DotNetMock.Dynamic.Predicates.IsAnything() );

[Max Kulkin]

Logged In: YES
user_id=358624

I think that this could be done, if Verify method in
Expectation* classes would be changed to (e.g. for
ExpectationValue):

public override void Verify() {
if (this.HasExpectations) {
IPredicate predicate = expectedArg as IPredicate;

    // if expectedArg is not an IPredicate, use default
    // behavior of IsEqual or IsAnything
    if \(predicate == null\) \{
        predicate = new IsEqual\(this.\_expectedValue\);
    \}

    Assertion.Assert\("Value do not equal for object " +

this.name, predicate.Eval(this._actualValue));
}
}

[rgavrilov]

Logged In: YES
user_id=1170022

Wrap instance of IsAnything in IsEqual predicate as in:
mockCtrl.Expect("Method", new IsEqual(new IsAnything()));

Since IsAnything does not have a state, you probably need to
compare references. IsEqual uses Object.Equals to evaluate
equality which should work just as you want it.

Regards,
Roman V. Gavrilov

[Choy Rim]

Logged In: YES
user_id=1023300

This is a good idea but we'll have to defer it for a while.
I've got a few other things on my plate. I haven't fully
grokked the static mock stuff yet anyways.