testing webforms w/ model-view-presenter
DESCRIPTION
Testing WebForms w/ Model-View-Presenter. Erik Peterson. What is MVP?. A design pattern, similar to Model-View-Controller, which allows for separation of concerns Allows for testability via the Presenter. MVP vs MVC. The MVC way (code-behind): - PowerPoint PPT PresentationTRANSCRIPT
Testing WebForms w/Testing WebForms w/Model-View-PresenterModel-View-Presenter
Erik PetersonErik Peterson
What is MVP?What is MVP?
A design pattern, similar to Model-View-A design pattern, similar to Model-View-Controller, which allows for separation of Controller, which allows for separation of concernsconcerns
Allows for testability via the PresenterAllows for testability via the Presenter
MVP vs MVCMVP vs MVC
The MVC way (code-behind):The MVC way (code-behind): In the beginning, we had code-behind, and it In the beginning, we had code-behind, and it
was goodwas good Business logic wound up closely tied to the UIBusiness logic wound up closely tied to the UI
The new ASP.NET MVC FrameworkThe new ASP.NET MVC Framework Gets rid of the .NET heavy-weight webform Gets rid of the .NET heavy-weight webform
modelmodel
MVP vs MVCMVP vs MVC
The MVP way:The MVP way: Model is the sameModel is the same View is the .aspx and code-behindView is the .aspx and code-behind Controller is the PresenterController is the Presenter Still have the webform modelStill have the webform model
ModelModel
Where the data livesWhere the data lives Defines structure and relation of data in your Defines structure and relation of data in your
systemsystem
ViewView
Handles the UIHandles the UI Contains the controls (server, HTML, etc)Contains the controls (server, HTML, etc) Handles data rendering, layout, etcHandles data rendering, layout, etc Implements interface to allow communication Implements interface to allow communication
with the Presenterwith the Presenter
PresenterPresenter
Where the business logic livesWhere the business logic lives Interacts with model to retrieve relevant dataInteracts with model to retrieve relevant data Passes data to the view, retrieves necessary Passes data to the view, retrieves necessary
info from the viewinfo from the view Can use dependency injection for testabilityCan use dependency injection for testability
Model Presenter View
MVP From Up HighMVP From Up High
Our DemoOur Demo
We want to view a list of players on our We want to view a list of players on our football teamfootball team
We want to be able to add a player to our We want to be able to add a player to our teamteam
We want to be able to remove a player We want to be able to remove a player from our teamfrom our team
Where do we begin?Where do we begin?
Retrieving players, load them to the viewRetrieving players, load them to the view
Front end vs. Back endFront end vs. Back end
And now, to the code!And now, to the code!
