private static Func <object> CreateTypeFactoryMethod(Type type)
{
var typeToCreate = type.IsInterface ? StateTypeEmitter.EmitType(type, new OwnedStateClassEmitter()) : type;
if (!typeToCreate.IsValueType)
{
var ctor = typeToCreate.GetConstructor(Type.EmptyTypes);
if (ctor == null || !ctor.IsPublic)
{
throw new ArgumentException("Requested type has to have a default ctor", nameof(type));
}
DynamicMethod ctorCall = new DynamicMethod("GetInstanceOf",
MethodAttributes.Public | MethodAttributes.Static,
CallingConventions.Standard,
typeToCreate,
null,
typeof(EmittedTypeFactory),
true);
var il = ctorCall.GetILGenerator(8);
il.Emit(OpCodes.Newobj, ctor);
il.Emit(OpCodes.Ret);
return((Func <object>)ctorCall.CreateDelegate(typeof(Func <object>)));
}
else
{
var value = Activator.CreateInstance(typeToCreate);
//Value types will be copied
return(() => value);
}
}
public void EmitType_OfInterfaceWithOnlyProperties_ShouldReturnTypeOfClass(object emitter)
{
//Arrange
//Act
var myType = StateTypeEmitter.EmitType(typeof(MyInterface), emitter as BaseClassEmitter);
//Assert
myType.IsClass.Should().BeTrue();
}
public void EmitType_OfInterfaceWithOnlyProperties_ShouldReturnTypeThatImplementsICanSwitchBackAndToReadOnly(object emitter)
{
//Arrange
var myType = StateTypeEmitter.EmitType(typeof(MyInterface), emitter as BaseClassEmitter);
//Act
bool implementsMyInterface = myType.GetInterfaces().Any(x => x.Name == typeof(ICanSwitchBackAndToReadOnly).Name);
//Assert
implementsMyInterface.Should().BeTrue();
}
private static Func <object> CreateTypeFactoryMethod(Type type)
{
var typeToCreate = type.IsInterface ? StateTypeEmitter.EmitType(type, new OwnedStateClassEmitter()) : type;
var ctor = typeToCreate.GetConstructor(Type.EmptyTypes);
if (ctor == null || !ctor.IsPublic)
{
throw new ArgumentException("Requested type has to have a default ctor", nameof(type));
}
return(Expression.Lambda <Func <object> >(Expression.New(ctor)).Compile());
}
public void EmitType_OfDerivedInterface_ShouldSucceed()
{
//Arrange
var emitter = new OwnedStateClassEmitter();
Type myType = null;
//Act
var exception = Record.Exception((Action)(() => myType = StateTypeEmitter.EmitType(typeof(MyDerivedOfNameAndSalary), emitter)));
//Assert
exception.Should().BeNull();
myType.Should().NotBeNull();
myType.Should().Implement(typeof(MyDerivedOfNameAndSalary));
myType.Should().Implement(typeof(MyBaseWithNameAndSalary));
}
public void EmitType_OfInterfaceDerivingFromTwoInterfaceWithSameNamedButDifferntTypeProperty_ShouldImplementPropertiesExplicitly()
{
//Arrange
var emitter = new OwnedStateClassEmitter();
Type myType = null;
//Act
var exception = Record.Exception((Action)(() => myType = StateTypeEmitter.EmitType(typeof(MyDerivedOfIntAndStringValues), emitter)));
//Assert
exception.Should().BeNull();
myType.Should().NotBeNull();
myType.Should().Implement(typeof(MyDerivedOfIntAndStringValues));
myType.Should().Implement(typeof(MyBaseWithStringValue));
myType.Should().Implement(typeof(MyBaseWithIntValue));
}
public void Setup()
{
var flagType = typeof(IFlagForApplier);
var openApplierType = typeof(TestBlankApplier <>);
var appliers = new List <object>();
for (int i = 0; i < Appliers; i++)
{
var stubClass = StateTypeEmitter.EmitType(flagType, new OwnedStateClassEmitter(), flagType.Name + i.ToString());
var constructedApplierType = openApplierType.MakeGenericType(stubClass);
appliers.Add(Activator.CreateInstance(constructedApplierType));
}
fixture = new AggregateFixture(Guid.NewGuid().ToString(), appliers.ToArray());
for (int i = 0; i < Events; i++)
{
fixture.AddCinemaCreationEvent();
}
}
private static WrapperCreationResult CreateWrapperFactoryMethor(Type type, bool throwException = true)
{
if (!type.IsInterface)
{
if (throwException)
{
throw new TypeCannotBeWrappedException(type);
}
else
{
return new WrapperCreationResult
{
Factory = null,
FactoryCreated = false,
}
};
}
var wrapperType = StateTypeEmitter.EmitType(type, new StateWrapperEmitter());
var ctor = wrapperType.GetConstructor(new[] { type });
if (ctor == null || !ctor.IsPublic)
{
throw new ArgumentException("Requested type has to have a default ctor", nameof(type));
}
var objectStateParam = ParameterExpression.Parameter(type, "wrapped");
var ctorCall = Expression.New(ctor, objectStateParam);
return(new WrapperCreationResult
{
Factory = Expression.Lambda(typeof(Func <,>).MakeGenericType(type, type),
ctorCall, objectStateParam).Compile(),
FactoryCreated = true,
});
}
}
