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TDD DNN Modules - Some changes to the core

When you are developing a DNN module you have access to a bunch of properties in the core framework such as UserID, ModuleID and LocalResourceFile.  When you start developing modules using Test Driven Development (TDD) you still need access to these properties which means we need to be able to access them from  the presenter class.

The presenter class has a construct like this

        Public Sub New(ByVal _View As IViewTestDrivenDNNModule)
            View = _View

            Controller = New TestDrivenDNNModuleController
        End Sub

which means that the View we access in the presenter class only has the properties specified in the interface for the View.  We can access the LocalResourceFile if the DotNetNuke.UI.Modules.IModuleControl is inherited but since the PortalModuleBase class does not have an interface we cannot access the other properties we need. 

So I made a few changes to the core to experiment with an Interface for the PortalModuleBase. Firstly I created a new interface called IPortalModuleBase

    Public Interface IPortalModuleBase
        ReadOnly Property ModuleID() As Integer
        ReadOnly Property UserID() As Integer
    End Interface
Then the PortalModuleBase class implements the new interface
    Public Class PortalModuleBase
        Inherits UserControlBase
        Implements IModuleControl
        Implements IPortalModuleBase
        Public ReadOnly Property ModuleId() As Integer Implements IPortalModuleBase.ModuleID
And lastly the interface for our module inherits both of the IPortalModuleBase and IModuleControl interfaces like this
    Public Interface IViewTestDrivenDNNModule
        Inherits DotNetNuke.UI.Modules.IPortalModuleBase
        Inherits DotNetNuke.UI.Modules.IModuleControl
This allows easy access to the properties we need in the presenter class like this
colTestDrivenDNNModules = objTestDrivenDNNModules.GetTestDrivenDNNModules(View.ModuleID)

Previously I had just added new properties to the IViewTestDrivenDNNModule interface and pulled the values through from the ViewTestDrivenDNNModule partial class. This however was inelegant and led to having properties such as ModuleId1!! This new solution is far more useable and very easy to implement.

Doing this will allow much easier development of TDD DNN modules.


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