Using steps defined in other assemblies.

Enable writing steps in VB.
Cleaning up ContextInjection

Runtime/Configuration/ConfigurationSectionHandler.cs

@@ -94,6 +94,14 @@ public TraceConfigElement Trace
             set { this["trace"] = value; }
         }
 
+        [ConfigurationProperty("stepAssemblies", IsDefaultCollection = false, IsRequired = false)]
+        [ConfigurationCollection(typeof(StepAssemblyCollection), AddItemName = "stepAssembly")]
+        public StepAssemblyCollection StepAssemblies
+        {
+            get { return (StepAssemblyCollection)this["stepAssemblies"]; }
+            set { this["stepAssemblies"] = value; }
+        }
+
         static internal ConfigurationSectionHandler CreateFromXml(string xmlContent)
         {
             ConfigurationSectionHandler section = new ConfigurationSectionHandler();
@@ -229,4 +237,27 @@ public string Listener
             set { this["listener"] = value; }
         }
     }
+
+    public class StepAssemblyCollection : ConfigurationElementCollection
+    {
+        protected override ConfigurationElement CreateNewElement()
+        {
+            return new StepAssemblyConfigElement();
+        }
+
+        protected override object GetElementKey(ConfigurationElement element)
+        {
+            return ((StepAssemblyConfigElement) element).File;
+        }
+    }
+
+    public class StepAssemblyConfigElement : ConfigurationElement
+    {
+        [ConfigurationProperty("file", DefaultValue = null, IsRequired = false)]
+        public string File
+        {
+            get { return (string)this["file"]; }
+            set { this["file"] = value; }
+        }
+    }
 }

Runtime/Configuration/RuntimeConfiguration.cs

@@ -1,8 +1,11 @@
 using System;
+using System.Collections.Generic;
 using System.Configuration;
 using System.Diagnostics;
 using System.Globalization;
+using System.IO;
 using System.Linq;
+using System.Reflection;
 using TechTalk.SpecFlow.Tracing;
 using TechTalk.SpecFlow.UnitTestProvider;
 
@@ -15,6 +18,8 @@ public partial class ConfigurationSectionHandler
 
     internal class RuntimeConfiguration
     {
+        private List<Assembly> _additionalStepAssemblies = new List<Assembly>();
+
         static public RuntimeConfiguration Current
         {
             get { return ObjectContainer.Configuration; }
@@ -37,6 +42,13 @@ static public RuntimeConfiguration Current
         public bool TraceTimings { get; set; }
         public TimeSpan MinTracedDuration { get; set; }
 
+        public IEnumerable<Assembly> AdditionalStepAssemblies
+        {
+            get {
+                return _additionalStepAssemblies;
+            }
+        }
+
         public RuntimeConfiguration()
         {
             ToolLanguage = string.IsNullOrEmpty(ConfigDefaults.ToolLanguage) ? 
@@ -103,6 +115,14 @@ public static RuntimeConfiguration LoadFromConfigFile(ConfigurationSectionHandle
                 config.MinTracedDuration = configSection.Trace.MinTracedDuration;
             }
 
+            foreach(var element in configSection.StepAssemblies)
+            {
+                string stepAssemblyFileName = ((StepAssemblyConfigElement)element).File;
+                string fullPath = Path.GetFullPath(stepAssemblyFileName);
+                Assembly stepAssembly = Assembly.LoadFile(fullPath);
+                config._additionalStepAssemblies.Add(stepAssembly);
+            }
+
             return config;
         }
 

Runtime/ObjectContainer.cs

@@ -1,11 +1,13 @@
 using System;
+using System.CodeDom.Compiler;
 using System.Collections.Generic;
 using System.Configuration;
 using System.Reflection;
 using TechTalk.SpecFlow.Configuration;
 using TechTalk.SpecFlow.ErrorHandling;
 using TechTalk.SpecFlow.Tracing;
 using TechTalk.SpecFlow.UnitTestProvider;
+using System.Linq;
 
 namespace TechTalk.SpecFlow
 {
@@ -53,7 +55,10 @@ internal static ITestRunner EnsureTestRunner(Assembly callingAssembly)
                     var result = new TestRunner();
 
                     List<Assembly> bindingAssemblies = new List<Assembly>();
-                    bindingAssemblies.Add(callingAssembly); //TODO: add more assemblies from config
+                    bindingAssemblies.Add(callingAssembly); 
+
+                    bindingAssemblies.AddRange(configuration.AdditionalStepAssemblies);
+
                     result.InitializeTestRunner(bindingAssemblies.ToArray());
 
                     return result;

TechTalk.SpecFlow.sln

@@ -38,6 +38,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TechTalk.SpecFlow.Tools", "
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FeatureTests", "Tests\FeatureTests\FeatureTests.csproj", "{3FE793A8-E662-4026-B4EC-891324073235}"
 EndProject
+Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") = "ExternalStepsVB", "Tests\FeatureTests\ExternalSteps\ExternalStepsVB\ExternalStepsVB.vbproj", "{D3F6B835-B228-4DCF-B533-B6ED469A33B3}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExternalStepsCS", "Tests\FeatureTests\ExternalSteps\ExternalStepsCS\ExternalStepsCS.csproj", "{3836A6FC-4ECC-413A-AC8F-83A0A773EC9E}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -87,6 +91,14 @@ Global
 		{3FE793A8-E662-4026-B4EC-891324073235}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{3FE793A8-E662-4026-B4EC-891324073235}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{3FE793A8-E662-4026-B4EC-891324073235}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D3F6B835-B228-4DCF-B533-B6ED469A33B3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D3F6B835-B228-4DCF-B533-B6ED469A33B3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D3F6B835-B228-4DCF-B533-B6ED469A33B3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D3F6B835-B228-4DCF-B533-B6ED469A33B3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3836A6FC-4ECC-413A-AC8F-83A0A773EC9E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3836A6FC-4ECC-413A-AC8F-83A0A773EC9E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3836A6FC-4ECC-413A-AC8F-83A0A773EC9E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3836A6FC-4ECC-413A-AC8F-83A0A773EC9E}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -97,5 +109,7 @@ Global
 		{70376361-0BE1-478D-8EEC-47BD1C768165} = {A10B5CD6-38EC-4D7E-9D1C-2EBA8017E437}
 		{F8FACCF0-5497-4C6B-861F-78D72FD9561B} = {A10B5CD6-38EC-4D7E-9D1C-2EBA8017E437}
 		{3FE793A8-E662-4026-B4EC-891324073235} = {A10B5CD6-38EC-4D7E-9D1C-2EBA8017E437}
+		{D3F6B835-B228-4DCF-B533-B6ED469A33B3} = {A10B5CD6-38EC-4D7E-9D1C-2EBA8017E437}
+		{3836A6FC-4ECC-413A-AC8F-83A0A773EC9E} = {A10B5CD6-38EC-4D7E-9D1C-2EBA8017E437}
 	EndGlobalSection
 EndGlobal

Tests/FeatureTests/App.config

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+  <configSections>
+    <section name="specFlow" type="TechTalk.SpecFlow.Configuration.ConfigurationSectionHandler, TechTalk.SpecFlow"/>
+  </configSections>
+
+  <specFlow>
+    <language feature="en" tool="en" />
+
+    <unitTestProvider name="NUnit"/>
+
+    <generator allowDebugGeneratedFiles="false" />
+
+    <runtime detectAmbiguousMatches="true"
+             stopAtFirstError="false"
+             missingOrPendingStepsOutcome="Inconclusive" />
+
+    <trace traceSuccessfulSteps="true"
+           traceTimings="false"
+           minTracedDuration="0:0:0.1"
+           listener="TechTalk.SpecFlow.Tracing.DefaultListener, TechTalk.SpecFlow"
+            />
+
+    <stepAssemblies>
+      <stepAssembly file="..\..\ExternalSteps\ExternalStepsVB\bin\debug\ExternalStepsVB.dll" />
+      <stepAssembly file="..\..\ExternalSteps\ExternalStepsCS\bin\debug\ExternalStepsCS.dll" />
+    </stepAssemblies>
+
+  </specFlow>
+</configuration>

Tests/FeatureTests/ExternalSteps/ExternalSteps.feature

@@ -0,0 +1,9 @@
+Feature: External Step Definitions
+	In order to modularize my solution
+	As a bdd enthusiast
+	I want to use step definitions from other assemblies
+
+Scenario: Steps defined in an external VB project and an external c-sharp project
+	Given I have external step definitions in a separate assembly referenced by this project
+	When I call those steps
+	Then the scenario should pass