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Dominic Burford - Professional Profile





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I am a professional software engineer and architect with over eighteen years commercial development experience with a strong focus on the design and development of web and mobile applications.

I have experience of architecting scalable, distributed, high volume web applications that are accessible from multiple devices due to their responsive web design, including architecting enterprise service-oriented solutions. I have also developed enterprise mobile applications using Xamarin and Telerik Platform.

I have extensive experience using .NET, ASP.NET, Windows and Web Services, WCF, SQL Server, LINQ and other Microsoft technologies. I am also familiar with HTML, Bootstrap, Javascript (inc. JQuery and Node.js), CSS, XML, JSON, Apache Cordova, KendoUI and many other web and mobile related technologies.

I am enthusiastic about Continuous Integration, Continuous Delivery and Application Life-cycle Management having configured such environments using CruiseControl.NET, TeamCity and Team Foundation Services. I enjoy working in Agile and Test Driven Development (TDD) environments.

Outside of work I have two beautiful daughters. I enjoy cycling, running and taking the dog for long walks. I love listening to music and am a fan of Rush and the Red Hot Chilli Peppers to name a few.

 
Articles 13 (Prolific)
Tech Blogs 0
Messages 1,015 (Master)
Q&A Questions 0
Q&A Answers 26
Tips/Tricks 14
Reference 0
Comments 68

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GeneralConsuming a private nuget feed in an Azure DevOps build pipeline Pin
Dominic Burford2-Nov-18 7:55
professionalDominic Burford2-Nov-18 7:55 
GeneralBuild a Xamarin.Forms iOS mobile app using Azure DevOps Pin
Dominic Burford9-Oct-18 0:38
professionalDominic Burford9-Oct-18 0:38 
GeneralDeploy a Mobile app to Azure using Azure DevOps Pin
Dominic Burford21-Sep-18 6:30
professionalDominic Burford21-Sep-18 6:30 
GeneralSetting up my first build pipeline with Azure DevOps Pin
Dominic Burford19-Sep-18 5:06
professionalDominic Burford19-Sep-18 5:06 
GeneralChoosing a mobile application development platform Pin
Dominic Burford4-Sep-18 2:36
professionalDominic Burford4-Sep-18 2:36 
GeneralExecuting an AJAX request from an ASP.NET Core querystring parameter Pin
Dominic Burford20-Aug-18 6:05
professionalDominic Burford20-Aug-18 6:05 
GeneralBuilding a Document Manager with ASP.NET Core 2.1 Pin
Dominic Burford19-Aug-18 23:38
professionalDominic Burford19-Aug-18 23:38 
GeneralReducing the surface area of the client Pin
Dominic Burford26-Jul-18 22:32
professionalDominic Burford26-Jul-18 22:32 
GeneralUnderstanding what you're doing Pin
Dominic Burford26-Jul-18 4:24
professionalDominic Burford26-Jul-18 4:24 
GeneralSetting environments in ASP.NET Core Pin
Dominic Burford16-Jul-18 22:29
professionalDominic Burford16-Jul-18 22:29 
GeneralCreating a zipped deployment for an ASP.NET Core web application Pin
Dominic Burford29-Jun-18 0:59
professionalDominic Burford29-Jun-18 0:59 
GeneralI’m turning into a Microsoft fanboy Pin
Dominic Burford8-Jun-18 6:45
professionalDominic Burford8-Jun-18 6:45 
GeneralAdding a confirmation dialog to an ASP.NET Core 2.0 form page handler Pin
Dominic Burford7-Jun-18 5:34
professionalDominic Burford7-Jun-18 5:34 
GeneralUploading a file in ASP.NET Core 2.0 Pin
Dominic Burford1-Jun-18 5:07
professionalDominic Burford1-Jun-18 5:07 
GeneralASP.NET Core 2.0 Razor Page Handlers Pin
Dominic Burford15-May-18 1:01
professionalDominic Burford15-May-18 1:01 
GeneralMocking the HttpContext Session object in ASP.NET Core 2.0 Pin
Dominic Burford30-Apr-18 5:31
professionalDominic Burford30-Apr-18 5:31 
Within our web application, we are using the HttpContext.Session object to store certain items of information. Although we make minimal use of this object (it is after all, global data), there are times when it just makes sense to store certain kinds of information in the session. For example, when the user logs into the application, we grab their email address and store this in the session. This obviously won't change and so is a prime candidate for storing within the session.

All of our services require that the user's email address is passed as parameter so we can determine the user making the request. Our functions therefore retrieve the email address from session storage. This works great, but led to a problem when I came to try unit testing the functions as I was unable to access session storage from my unit tests. After a bit of trial and error I came up with the following solution. Googling the problem revealed that there are several ways in which this can be achieved. I didn't want to use a mocking framework, as I wanted to keep the unit tests as small and simple as possible. Although adding a mocking framework would have given me a lot more functionality to play with, I was only interested in mocking the HttpContext.Session object. The solution I have used is a vanilla approach that doesn't use any external frameworks, thus making it possible for anyone to implement it.

First off, I created a class that implemented the ISession interface. This is the same interface that the HttpContext.Session object implements.
public class MockHttpSession : ISession
{
    readonly Dictionary<string, object> _sessionStorage = new Dictionary<string, object>();
    string ISession.Id => throw new NotImplementedException();
    bool ISession.IsAvailable => throw new NotImplementedException();
    IEnumerable<string> ISession.Keys => _sessionStorage.Keys;

    void ISession.Clear()
    {
        _sessionStorage.Clear();
    }
    Task ISession.CommitAsync(CancellationToken cancellationToken)
    {
        throw new NotImplementedException();
    }
    Task ISession.LoadAsync(CancellationToken cancellationToken)
    {
        throw new NotImplementedException();
    }
    void ISession.Remove(string key)
    {
        _sessionStorage.Remove(key);
    }
    void ISession.Set(string key, byte[] value)
    {
        _sessionStorage[key] = Encoding.UTF8.GetString(value);
    }
    bool ISession.TryGetValue(string key, out byte[] value)
    {
        if (_sessionStorage[key] != null)
        {
            value = Encoding.ASCII.GetBytes(_sessionStorage[key].ToString());
            return true;
        }
        value = null;
        return false;
    }
}
My functions have an optional parameter which takes an instance of an ISession object. If one is not passed as an argument then the function simply uses HttpSession.Session instead.
public void MyFunction(ISession context = null)
{
    if (context == null)
    {
        context = HttpContext.Session;
    }

    string email = context.Get("UserEmail");
    //rest of the function code goes here
}
Then in my unit tests I create an instance of the mock Httpcontext.Session class from above and pass this as an argument to the functions I wish to unit test. In the example below I am unit testing a ViewComponent that retrieves the user's email from the HttpContext.Session object.
[TestMethod]
public async Task InvokeAsyncTest()
{
    MainMenuViewComponent component = new MainMenuViewComponent();
    var mockContext = MockHttpContext();

    var result = await component.InvokeAsync(mockContext);

    Assert.IsNotNull(result);
}

private static ISession MockHttpContext()
{
    MockHttpSession httpcontext = new MockHttpSession();
    httpcontext.Set<string>("UserEmail", "unittest@mycompany.com");
    return httpcontext;
}
I have now implemented this same pattern for all my ViewComponent's, and it works absolutely perfectly. I can easily and simply unit test any code that makes use of the HttpContext.Session object without a problem.
"There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies, and the other way is to make it so complicated that there are no obvious deficiencies. The first method is far more difficult." - C.A.R. Hoare

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GeneralUsing ViewComponents in ASP.NET Core 2.0 Pin
Dominic Burford16-Apr-18 23:49
professionalDominic Burford16-Apr-18 23:49 
GeneralWeb application metrics with Application Insight Part 2 Pin
Dominic Burford10-Apr-18 23:50
professionalDominic Burford10-Apr-18 23:50 
GeneralWriting flexible code in ASP.NET Core 2.0 Razor Pages Pin
Dominic Burford3-Apr-18 6:06
professionalDominic Burford3-Apr-18 6:06 
GeneralPerforming Code Coverage for .NET Core 2.0 applications Pin
Dominic Burford23-Mar-18 5:54
professionalDominic Burford23-Mar-18 5:54 
GeneralRe: Performing Code Coverage for .NET Core 2.0 applications Pin
Slacker00723-Mar-18 6:12
professionalSlacker00723-Mar-18 6:12 
GeneralRe: Performing Code Coverage for .NET Core 2.0 applications Pin
Dominic Burford23-Mar-18 6:15
professionalDominic Burford23-Mar-18 6:15 
GeneralBuilding ASP.NET Core 2.0 web applications Pin
Dominic Burford21-Mar-18 6:39
professionalDominic Burford21-Mar-18 6:39 
GeneralObtaining the authentication token returned from Azure AD B2C in ASP.NET Core 2.0 Pin
Dominic Burford16-Mar-18 3:03
professionalDominic Burford16-Mar-18 3:03 
GeneralVersioning a .NET Core 2.0 application Pin
Dominic Burford13-Mar-18 3:34
professionalDominic Burford13-Mar-18 3:34 

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