public void CanCreateADynamicAdder()
{
Func <object[], object> addBody = delegate(object[] args)
{
var a = (int)args[0];
var b = (int)args[1];
return(a + b);
};
// Map LinFu's DynamicObject to an ICanAdd interface
var linfuDynamicObject = new DynamicObject(new object());
var returnType = typeof(int);
var parameterTypes = new[] { typeof(int), typeof(int) };
linfuDynamicObject.AddMethod("Add", addBody, returnType, parameterTypes);
// If it looks like a duck...
Assert.IsTrue(linfuDynamicObject.LooksLike <ICanAdd>());
// ...then it must be a duck, right?
var somethingThatCanAdd = new SomethingThatAdds(linfuDynamicObject.CreateDuck <ICanAdd>());
somethingThatCanAdd.FirstNumber = 10;
somethingThatCanAdd.SecondNumber = 20;
Assert.AreEqual(somethingThatCanAdd.AddNumbers(), 30);
}
public static object CreateDuck(this TypeSpec spec, Type targetType)
{
var type = new DynamicType(spec);
var dynamic = new DynamicObject();
dynamic += type;
return(dynamic.CreateDuck(targetType));
}
public static T CreateDuck <T>(this TypeSpec spec)
where T : class
{
var type = new DynamicType(spec);
var dynamic = new DynamicObject();
dynamic += type;
return(dynamic.CreateDuck <T>());
}
public static Object Extend(object toExtend)
{
var dyn = new DynamicObject(toExtend);
dyn.MixWith(new WithId {
Id = Guid.New()
});
var extended = dyn.CreateDuck <IWithId>(returnValue.GetType().GetInterfaces());
return(extended);
}
public static Object Extend(object toExtend)
{
var dyn = new DynamicObject(toExtend);
dyn.MixWith(new WithId {
Id = Guid.New()
});
var extended = dyn.CreateDuck <IWithId>();
return(extended);
}
/// <summary>
/// Creates the module from specified data in specified <see cref="AppDomain"/>.
/// </summary>
/// <param name="moduleInfo">The module info.</param>
/// <param name="domain">The module domain.</param>
/// <returns>Created module.</returns>
public static IModule CreateModule(ModuleInfo moduleInfo, AppDomain domain)
{
object moduleInstance = domain.CreateInstanceAndUnwrap(moduleInfo.AssemblyName, moduleInfo.TypeName);
DynamicObject dynModule = new DynamicObject(moduleInstance);
if (dynModule.LooksLike <IModule>() == false)
{
throw new MissingMethodException("Required methods not found.");
}
IModule moduleDuck = dynModule.CreateDuck <IModule>();
return(moduleDuck);
}
public void ShouldBeAbleToShareTheSameDynamicType()
{
var typeSpec = new TypeSpec {
Name = "Person"
};
// Add an age property
typeSpec.AddProperty("Age", typeof(int));
// Attach the DynamicType named 'Person' to a bunch of dynamic objects
var personType = new DynamicType(typeSpec);
var first = new DynamicObject();
var second = new DynamicObject();
first += personType;
second += personType;
// Use both objects as persons
var firstPerson = first.CreateDuck <IPerson>();
var secondPerson = second.CreateDuck <IPerson>();
firstPerson.Age = 18;
secondPerson.Age = 21;
Assert.AreEqual(18, firstPerson.Age);
Assert.AreEqual(21, secondPerson.Age);
// Change the type so that it supports the INameable interface
typeSpec.AddProperty("Name", typeof(string));
var firstNameable = first.CreateDuck <INameable>();
var secondNameable = second.CreateDuck <INameable>();
firstNameable.Name = "Foo";
secondNameable.Name = "Bar";
Assert.AreEqual("Foo", firstNameable.Name);
Assert.AreEqual("Bar", secondNameable.Name);
}
/// <summary>
/// Creates the module specific domain.
/// </summary>
/// <param name="module">The module.</param>
/// <returns>Created application domain.</returns>
private static AppDomain CreateModuleSpecificDomain(ModuleInfo module)
{
object moduleInstance = Activator.CreateInstance(module.AssemblyName, module.TypeName).Unwrap();
DynamicObject dynModule = new DynamicObject(moduleInstance);
if (dynModule.LooksLike <IDomainCreator>())
{
return(dynModule.CreateDuck <IDomainCreator>().CreateDomain());
}
else
{
return(null);
}
}
public void ShouldAllowDuckTyping()
{
var test = new MockClass();
var dynamic = new DynamicObject(new object());
var duck = dynamic.CreateDuck <ITest>();
// Combine the MockClass implementation with the current
// object instance
dynamic.MixWith(test);
duck.TargetMethod();
duck.TargetMethod <int>();
Assert.AreEqual(2, test.CallCount);
}
public void ShouldBeAbleToShareTheSameDynamicType()
{
var typeSpec = new TypeSpec { Name = "Person" };
// Add an age property
typeSpec.AddProperty("Age", typeof(int));
// Attach the DynamicType named 'Person' to a bunch of dynamic objects
var personType = new DynamicType(typeSpec);
var first = new DynamicObject();
var second = new DynamicObject();
first += personType;
second += personType;
// Use both objects as persons
var firstPerson = first.CreateDuck<IPerson>();
var secondPerson = second.CreateDuck<IPerson>();
firstPerson.Age = 18;
secondPerson.Age = 21;
Assert.AreEqual(18, firstPerson.Age);
Assert.AreEqual(21, secondPerson.Age);
// Change the type so that it supports the INameable interface
typeSpec.AddProperty("Name", typeof(string));
var firstNameable = first.CreateDuck<INameable>();
var secondNameable = second.CreateDuck<INameable>();
firstNameable.Name = "Foo";
secondNameable.Name = "Bar";
Assert.AreEqual("Foo", firstNameable.Name);
Assert.AreEqual("Bar", secondNameable.Name);
}
public void ShouldAllowDuckTyping()
{
MockClass test = new MockClass();
DynamicObject dynamic = new DynamicObject(new object());
ITest duck = dynamic.CreateDuck<ITest>();
// Combine the MockClass implementation with the current
// object instance
dynamic.MixWith(test);
duck.TargetMethod();
duck.TargetMethod<int>();
Assert.AreEqual(2, test.CallCount);
}
