Display NuGet version in package management console.

src/AddIns/Misc/PackageManagement/Project/Src/Scripting/PackageManagementConsoleHost.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Reflection;
 using System.Threading;
 
 using ICSharpCode.AvalonEdit;
@@ -20,6 +21,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 		IPackageManagementAddInPath addinPath;
 		int autoIndentSize = 0;
 		string prompt = "PM> ";
+		Version nuGetVersion;
 		
 		public PackageManagementConsoleHost(
 			IPowerShellHostFactory powerShellHostFactory,
@@ -68,6 +70,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 		void RunSynchronous()
 		{
 			InitPowerShell();
+			WriteInfoBeforeFirstPrompt();
 			WritePrompt();
 			ProcessUserCommands();
 		}
@@ -97,6 +100,26 @@ namespace ICSharpCode.PackageManagement.Scripting
 			powerShellHost.ModulesToImport.Add(module);
 		}
 		
+		void WriteInfoBeforeFirstPrompt()
+		{
+			WriteNuGetVersionInfo();
+		}
+		
+		void WriteNuGetVersionInfo()
+		{
+			string versionInfo = String.Format("NuGet {0}", GetNuGetVersion());
+			ScriptingConsole.WriteLine(versionInfo, ScriptingStyle.Out);
+		}
+		
+		protected virtual Version GetNuGetVersion()
+		{
+			if (nuGetVersion == null) {
+				AssemblyName name = typeof(PackageSource).Assembly.GetName();
+				nuGetVersion = name.Version;
+			}
+			return nuGetVersion;
+		}
+		
 		void WritePrompt()
 		{
 			ScriptingConsole.Write(prompt, ScriptingStyle.Prompt);

src/AddIns/Misc/PackageManagement/Test/Src/Helpers/TestablePackageManagementConsoleHost.cs

@@ -41,5 +41,12 @@ namespace PackageManagement.Tests.Helpers
 			ThreadStartPassedToCreateThread = threadStart;
 			return FakeThread;
 		}
+		
+		public Version VersionToReturnFromGetNuGetVersion = new Version("1.2");
+		
+		protected override Version GetNuGetVersion()
+		{
+			return VersionToReturnFromGetNuGetVersion;
+		}
 	}
 }

src/AddIns/Misc/PackageManagement/Test/Src/Scripting/PackageManagementConsoleHostTests.cs

@@ -201,5 +201,19 @@ namespace PackageManagement.Tests.Scripting
 			
 			CollectionAssert.AreEqual(files, actualFiles);
 		}
+		
+		[Test]
+		public void Run_TextDisplayedBeforeFirstPromptDisplayed_NuGetVersionDisplayed()
+		{
+			CreateHost();
+			host.VersionToReturnFromGetNuGetVersion = new Version("1.2.0.4");
+			RunHost();
+			
+			string expected = "NuGet 1.2.0.4";
+			
+			bool contains = scriptingConsole.AllTextPassedToWriteLine.Contains(expected);
+			
+			Assert.IsTrue(contains);
+		}
 	}
 }