public Maybe <TRequestExodata> TryResolve <TRequestExodata, TContext, TSubject>(IExodataRequest <TRequestExodata, TContext, TSubject> request)
{
return(ExodataRequest <TExodata, TContext, TSubject>
.TryToAdapt(request)
.SelectMaybe(r => _Attribute.TryResolve(r))
.Cast <TRequestExodata>());
}
public virtual Maybe <TExodata> TryResolve <TContext, TSubject>(Maybe <TContext> context, Maybe <TSubject> subject, MemberInfo member)
{
return(ExodataResolver
.ToMaybe()
.Or(Ioc.TryResolve <IExodataResolver>)
.SelectMaybe(x => x.TryResolve(ExodataRequest.Create <TExodata, TContext, TSubject>(this, context, subject, member)))
.SelectMaybe(x => EnsureValid(x, "bound")));
}
public Maybe <TRequestExodata> TryResolve <TRequestExodata, TRequestContext, TRequestSubject>(IExodataRequest <TRequestExodata, TRequestContext, TRequestSubject> request)
{
return(ExodataRequest <TExodata, TContext, TSubject>
.TryToAdapt(request)
.Where(Matches)
.SelectMaybe(ValueFactory)
.Cast <TRequestExodata>());
}
public void SourceReturnsNoBinding_GivenNoSubjectOrMember()
{
var source = new AttributeExodataBindingSource();
var bindings = source.GetBindingsFor(ExodataRequest.Create <object, object, object>(new Symbol(), Maybe.NoValue, Maybe.NoValue, null));
Assert.IsNotNull(bindings);
Assert.AreEqual(0, bindings.Count());
}
public void TryResolve_WithNoBindings_ReturnsNoValue()
{
var symbol = new Symbol();
var source = new ExodataBindingModule();
var resolver = new ExodataResolver(new[] { source });
Maybe <int> value = resolver.TryResolve(ExodataRequest.Create <int, object, object>(symbol, Maybe <object> .NoValue, Maybe <object> .NoValue, null));
Assert.AreEqual(Maybe <int> .NoValue, value);
}
public void TryResolve_WithNonAmbiguousBindingSelection_YieldsValue()
{
var symbol = new Symbol();
var source = new ExodataBindingModule();
source.Bind(symbol, 42);
var resolver = new ExodataResolver(new[] { source });
Maybe <int> result = resolver.TryResolve(ExodataRequest.Create <int, object, object>(symbol, Maybe <object> .NoValue, Maybe <object> .NoValue, null));
Assert.AreEqual(42, result.Value);
}
public void TryResolve_WithAmbiguousBindingSelection_ThrowsAmbiguousExodataBindingsException()
{
var symbol = new Symbol();
var source = new ExodataBindingModule();
source.Bind(symbol, 42);
source.Bind(symbol, 42);
var resolver = new ExodataResolver(new[] { source });
Maybe <int> result = resolver.TryResolve(ExodataRequest.Create <int, object, object>(symbol, Maybe <object> .NoValue, Maybe <object> .NoValue, null));
var exception = Assert.Throws <AmbiguousExodataBindingsException>(() => { var x = result.HasValue; });
Assert.IsNotNull(exception);
Assert.AreEqual(2, exception.Bindings.Count());
}
protected override Maybe <TExodata> TryResolve <TSubject>(Maybe <TContext> context, Maybe <TSubject> subject, MemberInfo member)
{
return(_Resolver.TryResolve(ExodataRequest.Create <TExodata, TContext, TSubject>(_Symbol, context, subject, member)));
}
