I have method:
public ActionResult Index(IEmailRepository myEmails)
I want to inject into method parameter unsing castle windsor.
I have mapping that insert the mapped class into constructor,
container.Register(
Component.For<IEmailRepository>().ImplementedBy<EmailRepository>().LifeStyle.PerWebRequest);
but i do not know how to do this into method.
Any ideas?
You don't do it in the method -- you do it in the constructor and hold on to the reference in a class-level variable:
private IEmailRepository emailRepository;
public YourClassConstructor(IEmailRepository myEmails)
{
this.emailRepository = myEmails;
}
public ActionResult Index()
{
// use the emailRepository
}
Related
I am using PowerMocking for JUNIT and Iam new to PowerMock.
I want to mock one class which is non static.
The class scenario goes as follows.
public class Export extends MyUtil implements ExportFormatting<DeptSummaryByDCDTO, LmReportsInputDTO>{
public String createPDF(List<DeptSummaryByDCDTO> summaryDtoList, LmReportsInputDTO inputDto){
}
public String createPDF(Map<String, DeptSummaryByDCDTO> paramMap,
LmReportsInputDTO paramK) {
}
}
The calling class is as follows.
public static Response getMultiplePackSku{
filePath = new Export(inputDto).createPDF(resultList,null);
}
The Question is,
I am trying to test the above class using powermock.
Can anybody tell how to mock the line filePath.....
You need to first mock the constructor and return an Export mock. On the returned mock you need to record the call to createPDF. The tricky part is the constructor mocking. I'll give you an example, hopefully you'll get all of it:
#RunWith(PowerMockRunner.class) // This annotation is for using PowerMock
#PrepareForTest(Export.class) // This annotation is for mocking the Export constructor
public class MyTests {
private mockExport;
#Before
public void setUp () {
// Create the mock
mockExport = PowerMock.createMock(Export.class)
}
#Test
public void testWithConstructor() {
SomeDtoClass inputDto = PowerMock.createMock(SomeDtoClass.class);
PowerMock.expectNew(Export.class, inputDto).andReturn(mockExport);
PowerMock.replay(mockExport, Export.class);
expect(mockExport.createPDF(resultList, null);
// Run the tested method.
}
}
Here is a description of how to mock a constructor call: MockConstructor
Hi have the following component registered into Castle Windsor:
public class CommandDispatcher : IServiceCommandDispatcher
{
private readonly IWindsorContainer container;
public CommandDispatcher(IWindsorContainer container)
{
this.container = container;
}
#region IServiceCommandDispatcher Members
public void Dispatch<TCommand>(TCommand command) where TCommand : IServiceCommand
{
var handler = container.Resolve<IServiceCommandHandler<TCommand>>();
handler.Handle(command);
}
#endregion
}
And the dispatcher is registered in the following way:
Component
.For<IServiceCommandDispatcher>()
.ImplementedBy<CommandDispatcher>(),
But the field container is null when I resolve an instance of the dispatcher.
What should I do in order to pass the container to the resolved children items?
Windsor solves this problem for you with the Typed Factory Facility.
In the below example I want the implementation of ICommandHandlerFactory to resolve my command handler from my windsor container.
class CommandDispatcher : IServiceCommandDispatcher
{
private readonly ICommandHandlerFactory factory;
public CommandDispatcher(ICommandHandlerFactory factory)
{
this.factory = factory;
}
public void Dispatch<T>(T command) where T : IServiceCommand
{
var handler = this.factory.Create(command);
handler.Handle(command);
this.factory.Destroy(handler);
}
}
To achieve this I only need to create the ICommandHandlerFactory Interface.
public interface ICommandHandlerFactory
{
Handles<T> Create<T>(T command) where T : IServiceCommand;
void Destroy(object handler);
}
No implementation of ICommandHandlerFactory is required as Windsor will create the implementation. Windsor uses the convention that a method that returns an object is a resolve method and a method that returns void is a release method.
To register the factory you need to include using Castle.Facilities.TypedFactory and then register your factory as follows
container.AddFacility<TypedFactoryFacility>();
container.Register(
Component.For<ICommandHandlerFactory>()
.AsFactory()
);
Just to reiterate you do not have to write any implementation code for your factory.
This works:
container.Register(Component.For<IWindsorContainer>().Instance(container));
It's not ideal, because you still have to call the Resolve method. There may be a better way to do this, using a factory. This looks similar to what you're trying to do:
http://kozmic.net/2010/03/11/advanced-castle-windsor-ndash-generic-typed-factories-auto-release-and-more/
I am still learning JMockit and need help understanding it.
I am testing a class that uses superclass methods. My test gets a null pointer when it attempts to use the superclass method due to code inside it that uses struts action context to get the session and pull an object from the session.
The method I want to bypass the struts session stuff inside the protected method.
public class MyExtendingClass extends MySuperClass{
public void methodIamTesting(){///}
}
public abstract class MySuperClass{
//I want to mock this method
protected Object myProtectedSuperClassMethod(){
// struts action context code that returns an object//}
}
Test code
#Test
public void testRunsAndDoesntPass() {
Mockit.setUpMock(MySuperClass.class, new MySuperClass(){
public Object myProtectedSuperClassMethod() {
return object;
}
});
// real class method invocation happens
assertEquals(expected, actual);
}
I keep getting NullPointers just like if I didn't have the mock
Not sure what to try next. All the docs and code samples I have read say to just declare the superclass method as public in the setUpMock and it should work.
I can't mock the entire class because that is the class I am testing.
I discovered that I needed to create the MockClass then reference it using setupmock correctly.
I am really falling in love with JMockit.
#MockClass(realClass = MyExtendingClass.class)
public static class MockSuperClass {
final Object object = new Object();
#Mock
public Object myProtectedSuperClassMethod() {
return object;
}}
#Test
public void testRunsAndNowWillPass() {
Mockit.setUpMock(MySuperClass.class, new MockSuperClass(){
public Object myProtectedSuperClassMethod() {
return object;
}});
// real class method invocation happens where i set expected and actual
assertEquals(expected, actual);
}
you mask the parent class implementation out totally #Mocked final MySuperClass base
abstract class MySuperClass{
protected Object myProtectedSuperClassMethod(){
}
class MyExtendingClass extends MySuperClass{
public void methodIamTesting(){///}
}
#Test
public void testRunsAndDoesntPass(#Mocked final MySuperClass base ) {
//you could mask out all the base class implementation like this
new Expectations(){{
invoke(base, "myProtectedSuperClassMethod");
}};
// real class method invocation happens
// ...
assertEquals(expected, actual);
}
In MEF it's possible to set the dependencies for an existing object using something like:
container.SatisfyImportsOnce(instance);
Is it possible to do the same with Castle Windsor?
I'm using (read: learning) Caliburn.Micro, and trying to update the template project from MEF to Windsor, which is where I've come across the issue.
Sorry Neil, Windsor doesn't have that feature
Castle Windsor FAQ
Windsor will resolve a property dependency (which it considers an optional dependency) such as an ILogger property if there is a registered component for that service. But this only happens during component activation...when the component is constructed the first time, there is no way to pass Windsor an existing instance and inject components into properties.
With Castle Windsor you can register an existing instance with the container, is this the kind of thing you are looking for?
var instance = new Logger();
var container = new WindsorContainer();
container.Register(Component.For<ILogger>().Instance(instance))
where
public interface ILogger
{
void LogException(Exception ex);
}
public class Logger : ILogger
{
public void LogException(Exception ex)
{
// Log exception
}
}
You can however code this functionality yourself. For example, here is an ASP.NET MVC FilterAttributeFilterProvider, used to inject proprties onto attribute action filters.
public class AttributeFilterProvider : FilterAttributeFilterProvider
{
public AttributeFilterProvider(IKernel kernel)
{
_kernel = kernel;
}
private readonly IKernel _kernel;
protected override IEnumerable<FilterAttribute> GetControllerAttributes(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
{
var attributes = base.GetControllerAttributes(controllerContext, actionDescriptor);
BuildUpAttributeDependancies(attributes);
return attributes;
}
protected override IEnumerable<FilterAttribute> GetActionAttributes(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
{
var attributes = base.GetActionAttributes(controllerContext, actionDescriptor);
BuildUpAttributeDependancies(attributes);
return attributes;
}
private void BuildUpAttributeDependancies(IEnumerable<FilterAttribute> attributes)
{
foreach (var attribute in attributes)
{
var propInfos = attribute.GetType().GetProperties().Where(x => x.GetValue(attribute) == null).AsEnumerable();
foreach (var pi in propInfos)
{
if (_kernel.HasComponent(pi.PropertyType))
{
var service = _kernel.Resolve(pi.PropertyType);
pi.SetValue(attribute, service);
}
}
}
}
}
In the BuildUpAttributeDependancies method, we look for un-initialised (null) properties, and then check to see if the type has been registered with Castle Windsor. If it has, we set the property.
By replacing the default FilterAttributeFilterProvider with our custom one (above) in the global.asax file we can now use Castle Windsors DI features to inject any type onto any Action Filter in our MVC application. To complete this answer fully, here is an example of a global.asax application class with Castle Windsor setup for both Controller (at instantiation time) and ActionFilter (at usage time) dependancy injection:
public class MvcApplication : System.Web.HttpApplication
{
private static IWindsorContainer _container;
private static void BootstrapContainer()
{
_container = new WindsorContainer()
.Install(FromAssembly.This());
var controllerFactory = new ControllerFactory(_container.Kernel);
ControllerBuilder.Current.SetControllerFactory(controllerFactory);
}
private static void BootstrapFilters()
{
var oldProvider = FilterProviders.Providers.Single(f => f is FilterAttributeFilterProvider);
FilterProviders.Providers.Remove(oldProvider);
var provider = new AttributeFilterProvider(_container.Kernel);
FilterProviders.Providers.Add(provider);
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
BootstrapContainer();
BootstrapFilters();
}
}
I am learning castle.windsor following the tutorial online. this is the simple sample code:
public class Form1 {
private readonly HttpServiceWatcher serviceWatcher;
private System.ComponentModel.Container components = null;
public Form1()
{
InitializeComponent();
}
public Form1(HttpServiceWatcher serviceWatcher) : this()
{
this.serviceWatcher = serviceWatcher;
}
}
HttpServiceWatcher is in the xml conf file.
My question is: who is calling the constructor that has the parameter: public Form1(Http....) ?
at the program.cs i have this:
container.AddComponent("form.component",typeof(Form1));
Form1 form1 = (Form1) container["form.component"];
Application.Run(form1);
The container calls the constructor when it creates the requested object. The constructor that gets called is the constructor with the most arguments that the container can satisfy.
The dependency container itself creates the object (and thus calls the constructor).