public void CreateType(Type instanceType, Type baseType)
{
// Arrange
Func <object> instanceDelegate = TypeActivator.Create(instanceType);
// Act
object instance = instanceDelegate();
// Assert
Assert.IsType(instanceType, instance);
}
public void CreateOfTInvalid()
{
// string doesn't have a default ctor
Assert.ThrowsArgument(() => TypeActivator.Create <string>(), paramName: null);
// Uri doesn't have a default ctor
Assert.ThrowsArgument(() => TypeActivator.Create <Uri>(), paramName: null);
// HttpContent is abstract
Assert.Throws <InvalidOperationException>(() => TypeActivator.Create <HttpContent>());
// HttpActionDescriptor is abstract
Assert.Throws <InvalidOperationException>(() => TypeActivator.Create <HttpActionDescriptor>());
}
public void CreateOfTBaseInvalid()
{
// int not being a ref type
Assert.ThrowsArgument(() => TypeActivator.Create <object>(typeof(int)), paramName: null);
// GUID is not a ref type
Assert.ThrowsArgument(() => TypeActivator.Create <object>(typeof(Guid)), paramName: null);
// HttpStatusCode is not a ref type
Assert.ThrowsArgument(() => TypeActivator.Create <object>(typeof(HttpStatusCode)), paramName: null);
// string does not have a default ctor
Assert.ThrowsArgument(() => TypeActivator.Create <string>(typeof(string)), paramName: null);
// ObjectContent does not have a default ctor
Assert.ThrowsArgument(() => TypeActivator.Create <HttpContent>(typeof(ObjectContent)), paramName: null);
// Base type and instance type flipped
Assert.ThrowsArgument(() => TypeActivator.Create <ReflectedHttpActionDescriptor>(typeof(HttpActionDescriptor)), paramName: null);
}
public void CreateTypeInvalidThrowsInvalidOperation(Type type)
{
// Abstract types cause InvalidOperationException
Assert.Throws <InvalidOperationException>(() => TypeActivator.Create(type));
}
public void CreateTypeInvalidThrowsInvalidArgument(Type type)
{
// Value types, interfaces, and open generics cause ArgumentException
Assert.ThrowsArgument(() => TypeActivator.Create(type), paramName: null);
}