Update the TestContext within specflow customising MSTestProvider

[Max Foulds]

So i have managed to get access to the instance of TestContext for my current scenario using the following Custom generator, however if I invoke TestContext.AddResultFile() I was hoping that the file would be added to my MSTest results. How do I update the TestContext that was passed into the FeatureSetup method so that any updates to TestContext are added to results?

Resultant added/amended Generated Code in feature.cs file

        private static Microsoft.VisualStudio.TestTools.UnitTesting.TestContext myTestContext;

        public Microsoft.VisualStudio.TestTools.UnitTesting.TestContext TestContext
        {
            get
            {
                return myTestContext;
            }
            set
            {
                myTestContext = value;
            }
        }

        [Microsoft.VisualStudio.TestTools.UnitTesting.ClassInitializeAttribute()]
        public static void FeatureSetup(Microsoft.VisualStudio.TestTools.UnitTesting.TestContext testContext)
        {
            testRunner = TechTalk.SpecFlow.TestRunnerManager.GetTestRunner();
            TechTalk.SpecFlow.FeatureInfo featureInfo = new TechTalk.SpecFlow.FeatureInfo(new System.Globalization.CultureInfo("en-US"), "This is some text for the feature", ProgrammingLanguage.CSharp, ((string[])(null)));
            testRunner.OnFeatureStart(featureInfo);
            myTestContext = testContext;
        }

        public virtual void ScenarioSetup(TechTalk.SpecFlow.ScenarioInfo scenarioInfo)
        {
            testRunner.OnScenarioStart(scenarioInfo);
            testRunner.ScenarioContext.Add("MSTestContext", TestContext);
        }

Custom Generator Code for above code

// --------------------------------------------------------------------------------------------------------------------

// <copyright file="MsTest2010CodedUIGeneratorProvider.cs" company="">

//   

// </copyright>

// <summary>

//   The ms test 2010 coded ui generator provider.

// </summary>

// --------------------------------------------------------------------------------------------------------------------

namespace MESL.Test.SpecFlowCustomGenerator

{

    using System.CodeDom;

    using TechTalk.SpecFlow.Generator;

    using TechTalk.SpecFlow.Generator.UnitTestProvider;

    using TechTalk.SpecFlow.Utils;

    /// <summary>

    /// The ms test 2010 coded ui generator provider.

    /// </summary>

    public class MsTestCustomGeneratorProvider : MsTest2010GeneratorProvider

    {

        /// <summary>

        /// Initializes a new instance of the <see cref="MsTestCustomGeneratorProvider"/> class.

        /// </summary>

        /// <param name="codeDomHelper">

        /// The code dom helper.

        /// </param>

        public MsTestCustomGeneratorProvider(CodeDomHelper codeDomHelper)

            : base(codeDomHelper)

        {

        }

        /// <summary>

        /// The finalize test class.

        /// </summary>

        /// <param name="generationContext">

        /// The generation context.

        /// </param>

        public override void FinalizeTestClass(TestClassGenerationContext generationContext)

        {

            base.FinalizeTestClass(generationContext);

            var msTestContextGeneration =

                new CodeExpressionStatement(

                    new CodeMethodInvokeExpression(

                        new CodeTypeReferenceExpression("testRunner.ScenarioContext"),

                        "Add",

                        new CodeExpression[]

                        {

                            new CodePrimitiveExpression("MSTestContext"),

                            new CodeArgumentReferenceExpression("TestContext")

                        }));

            generationContext.ScenarioInitializeMethod.Statements.Add(msTestContextGeneration);

            var msTestAssignment =

                new CodeAssignStatement(

                    new CodeVariableReferenceExpression("myTestContext"),

                    new CodeVariableReferenceExpression("testContext"));

            generationContext.TestClassInitializeMethod.Statements.Add(msTestAssignment);

            var mstestContextFiled = new CodeMemberField

            {

                Attributes = MemberAttributes.Private | MemberAttributes.Static | MemberAttributes.Final,

                Name = "myTestContext",

                Type = new CodeTypeReference(TESTCONTEXT_TYPE),

            };

            generationContext.TestClass.Members.Add(mstestContextFiled);

            var mstestContextProperty = new CodeMemberProperty();

            mstestContextProperty.Name = "TestContext";

            mstestContextProperty.Type = new CodeTypeReference(TESTCONTEXT_TYPE);

            mstestContextProperty.Attributes =

                      (mstestContextProperty.Attributes & ~MemberAttributes.AccessMask) |

                         MemberAttributes.Public ;

            mstestContextProperty.GetStatements.Add(new CodeMethodReturnStatement(new CodeVariableReferenceExpression("myTestContext")));

            mstestContextProperty.SetStatements.Add(new CodeAssignStatement(new CodeVariableReferenceExpression("myTestContext"), new CodePropertySetValueReferenceExpression()));

            generationContext.TestClass.Members.Add(mstestContextProperty);

        }

    }

}