SpecFlow Tests configuration for VS 2012 Express

App.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <section name="specFlow" type="TechTalk.SpecFlow.Configuration.ConfigurationSectionHandler, TechTalk.SpecFlow" />
  </configSections>
  <specFlow>
    <!-- For additional details on SpecFlow configuration options see http://go.specflow.org/doc-config -->
    <!-- use unit test provider SpecRun+NUnit or SpecRun+MsTest for being able to execute the tests with SpecRun and another provider -->
    <unitTestProvider name="NUnit" />
  </specFlow>
</configuration>

runspcflowtests.bat

:: Add to VS2012 Express external tool command 
  :: Title "Run SpecFlow Tests"
  :: Arguments $(TargetName)$(TargetExt) $(ProjectDir)$(ProjectFileName) $(BinDir)TestResult.xml
    :: %1 $(TargetName)$(TargetExt)         => path to the dll, ex : C:\...\bin\debug\*.Specs.dll
    :: %2 $(ProjectDir)$(ProjectFileName)   => projectFile, ex : C:\...\*.Specs.csproj 
  :: Initial Directory: $(BinDir)
:: Note : Make sure "Use Output window" is checked
echo "param1 = %1"
echo "param2 = %2"
echo Starting to generate SpecFlow unit tests
SpecFlow generateAll %2 /force /verbose
if NOT %errorlevel% == 0 (
  echo "Error generate SpecFlow unit tests - %errorlevel%"
  GOTO :exit
)
echo Finished generating SpecFlow unit tests. Start running...
 
nunit-console-x86 %1
if NOT %errorlevel% == 0 (
  echo "Error running tests - %errorlevel%"
  GOTO :exit
)
SpecFlow nunitexecutionreport %2
if NOT %errorlevel% == 0 (
  echo "Error generating report - %errorlevel%"
  GOTO :exit
)
:: display result in the browzer
TestResult.html 
 
SpecFlow stepdefinitionreport %2
if NOT %errorlevel% == 0 (
  echo "Error generating Step Definition reports - %errorlevel%"
  GOTO :exit
)
StepDefinitionReport.html

echo Finished running SpecFlow unit tests.
:exit

test.feature

Feature: test
  In order to avoid silly mistakes
	As a math idiot
	I want to be told the sum of two numbers

@mytag
Scenario: Add two numbers
	Given I have entered 50 into the calculator
	And I have entered 70 into the calculator
	When I press add
	Then the result should be 120 on the screen

test.feature.cs

// ------------------------------------------------------------------------------
//  <auto-generated>
//      This code was generated by SpecFlow (http://www.specflow.org/).
//      SpecFlow Version:1.9.2.1
//      SpecFlow Generator Version:1.9.0.0
//      Runtime Version:4.0.30319.18052
// 
//      Changes to this file may cause incorrect behavior and will be lost if
//      the code is regenerated.
//  </auto-generated>
// ------------------------------------------------------------------------------
#region Designer generated code
#pragma warning disable
namespace ArduiNet.Tests.Features
{
    using TechTalk.SpecFlow;
    
    
    [System.CodeDom.Compiler.GeneratedCodeAttribute("TechTalk.SpecFlow", "1.9.2.1")]
    [System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
    [NUnit.Framework.TestFixtureAttribute()]
    [NUnit.Framework.DescriptionAttribute("test")]
    public partial class TestFeature
    {
        
        private static TechTalk.SpecFlow.ITestRunner testRunner;
        
#line 1 "test.feature"
#line hidden
        
        [NUnit.Framework.TestFixtureSetUpAttribute()]
        public virtual void FeatureSetup()
        {
            testRunner = TechTalk.SpecFlow.TestRunnerManager.GetTestRunner();
            TechTalk.SpecFlow.FeatureInfo featureInfo = new TechTalk.SpecFlow.FeatureInfo(new System.Globalization.CultureInfo("en-US"), "test", "In order to avoid silly mistakes\r\nAs a math idiot\r\nI want to be told the sum of t" +
                    "wo numbers", ProgrammingLanguage.CSharp, ((string[])(null)));
            testRunner.OnFeatureStart(featureInfo);
        }
        
        [NUnit.Framework.TestFixtureTearDownAttribute()]
        public virtual void FeatureTearDown()
        {
            testRunner.OnFeatureEnd();
            testRunner = null;
        }
        
        [NUnit.Framework.SetUpAttribute()]
        public virtual void TestInitialize()
        {
        }
        
        [NUnit.Framework.TearDownAttribute()]
        public virtual void ScenarioTearDown()
        {
            testRunner.OnScenarioEnd();
        }
        
        public virtual void ScenarioSetup(TechTalk.SpecFlow.ScenarioInfo scenarioInfo)
        {
            testRunner.OnScenarioStart(scenarioInfo);
        }
        
        public virtual void ScenarioCleanup()
        {
            testRunner.CollectScenarioErrors();
        }
        
        [NUnit.Framework.TestAttribute()]
        [NUnit.Framework.DescriptionAttribute("Add two numbers")]
        [NUnit.Framework.CategoryAttribute("mytag")]
        public virtual void AddTwoNumbers()
        {
            TechTalk.SpecFlow.ScenarioInfo scenarioInfo = new TechTalk.SpecFlow.ScenarioInfo("Add two numbers", new string[] {
                        "mytag"});
#line 7
this.ScenarioSetup(scenarioInfo);
#line 8
 testRunner.Given("I have entered 50 into the calculator", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "Given ");
#line 9
 testRunner.And("I have entered 70 into the calculator", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "And ");
#line 10
 testRunner.When("I press add", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "When ");
#line 11
 testRunner.Then("the result should be 120 on the screen", ((string)(null)), ((TechTalk.SpecFlow.Table)(null)), "Then ");
#line hidden
            this.ScenarioCleanup();
        }
    }
}
#pragma warning restore
#endregion

TestResult.xml

<?xml version="1.0" encoding="utf-8" standalone="no"?>
<!--This file represents the results of running a test suite-->
<test-results name="C:\...\[my_project_name].Specs\bin\Debug\[my_project_name].Specs.dll" total="0" errors="0" failures="0" not-run="0" inconclusive="0" ignored="0" skipped="0" invalid="0"date="2013-08-14" time="19:28:59">
  <environment nunit-version="2.6.2.12296" clr-version="2.0.50727.5472" os-version="Microsoft Windows NT 6.1.7601 Service Pack 1" platform="Win32NT" cwd="C:\Program Files (x86)\NUnit 2.6.2\bin" machine-name="[my_user_name]" user="user" user-domain="[my_user_name]C" />
  <culture-info current-culture="fr-FR" current-uiculture="fr-FR" />
  <test-suite type="Assembly" name="C:\...\[my_project_name].Specs\bin\Debug\[my_project_name].Specs.dll"  executed="True" result="Inconclusive" success="False" time="0.029" asserts="0" />
</test-results>

TestSteps.cs

using System;
using TechTalk.SpecFlow;
using NUnit.Framework;

namespace ArduiNet.Tests.Features
{
    [Binding]
    public class TestSteps
    {
        [Given(@"I have entered (.*) into the calculator")]
        public void GivenIHaveEnteredIntoTheCalculator(int p0)
        {
            
        }
        
        [When(@"I press add")]
        public void WhenIPressAdd()
        {
            
        }
        
        [Then(@"the result should be (.*) on the screen")]
        public void ThenTheResultShouldBeOnTheScreen(int p0)
        {
            Assert.IsTrue(true);
        }
    }
}