Override the Clear-Host PowerShell function to support clearing the package management console on the command line.

src/AddIns/Misc/PackageManagement/Project/PackageManagement.csproj

@@ -204,6 +204,7 @@
     </Compile>
     <Compile Include="Src\PackagesViewModel.cs" />
     <Compile Include="Src\ProcessPackageAction.cs" />
+    <Compile Include="Src\Scripting\ClearPackageManagementConsoleHostCommand.cs" />
     <Compile Include="Src\Scripting\IPackageScript.cs" />
     <Compile Include="Src\Scripting\IPackageScriptFactory.cs" />
     <Compile Include="Src\Scripting\IPackageScriptFileName.cs" />

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

@@ -0,0 +1,22 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+
+namespace ICSharpCode.PackageManagement.Scripting
+{
+	public class ClearPackageManagementConsoleHostCommand
+	{
+		IPackageManagementConsoleHost consoleHost;
+		
+		public ClearPackageManagementConsoleHostCommand(IPackageManagementConsoleHost consoleHost)
+		{
+			this.consoleHost = consoleHost;
+		}
+		
+		public void ClearHost()
+		{
+			consoleHost.Clear();
+		}
+	}
+}

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

@@ -18,6 +18,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 		IPackageManagementSolution Solution { get; }
 		
 		void Clear();
+		void WritePrompt();
 		void Run();
 		
 		IPackageManagementProject GetProject(string packageSource, string projectName);

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

@@ -8,6 +8,8 @@ namespace ICSharpCode.PackageManagement.Scripting
 {
 	public interface IPowerShellHostFactory
 	{
-		IPowerShellHost CreatePowerShellHost(IScriptingConsole scriptingConsole);
+		IPowerShellHost CreatePowerShellHost(
+			IPackageManagementConsoleHost consoleHost,
+			object privateData);
 	}
 }

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

@@ -70,7 +70,11 @@ namespace ICSharpCode.PackageManagement.Scripting
 		public void Clear()
 		{
 			ScriptingConsole.Clear();
-			WritePrompt();
+		}
+		
+		public void WritePrompt()
+		{
+			ScriptingConsole.Write(prompt, ScriptingStyle.Prompt);
 		}
 		
 		public void Run()
@@ -98,17 +102,13 @@ namespace ICSharpCode.PackageManagement.Scripting
 			AddModulesToImport();
 			powerShellHost.SetRemoteSignedExecutionPolicy();
 			UpdateFormatting();
-		}
+			RedefineClearHostFunction();
-		
-		void UpdateFormatting()
-		{
-			IEnumerable<string> fileNames = addinPath.GetPowerShellFormattingFileNames();
-			powerShellHost.UpdateFormatting(fileNames);
 		}
 		
 		void CreatePowerShellHost()
 		{
-			powerShellHost = powerShellHostFactory.CreatePowerShellHost(ScriptingConsole);
+			var clearConsoleHostCommand = new ClearPackageManagementConsoleHostCommand(this);
+			powerShellHost = powerShellHostFactory.CreatePowerShellHost(this, clearConsoleHostCommand);
 		}
 		
 		void AddModulesToImport()
@@ -117,6 +117,18 @@ namespace ICSharpCode.PackageManagement.Scripting
 			powerShellHost.ModulesToImport.Add(module);
 		}
 		
+		void UpdateFormatting()
+		{
+			IEnumerable<string> fileNames = addinPath.GetPowerShellFormattingFileNames();
+			powerShellHost.UpdateFormatting(fileNames);
+		}
+		
+		void RedefineClearHostFunction()
+		{
+			string command = "function Clear-Host { $host.PrivateData.ClearHost() }";
+			powerShellHost.ExecuteCommand(command);
+		}
+		
 		void WriteInfoBeforeFirstPrompt()
 		{
 			WriteNuGetVersionInfo();
@@ -151,11 +163,6 @@ namespace ICSharpCode.PackageManagement.Scripting
 			return "Type 'get-help NuGet' for more information.";
 		}
 		
-		void WritePrompt()
-		{
-			ScriptingConsole.Write(prompt, ScriptingStyle.Prompt);
-		}
-		
 		void ProcessUserCommands()
 		{
 			while (true) {

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

@@ -76,6 +76,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 		public void ClearConsole()
 		{
 			consoleHost.Clear();
+			consoleHost.WritePrompt();
 		}
 		
 		void UpdatePackageSourceViewModels()

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

@@ -17,18 +17,26 @@ namespace ICSharpCode.PackageManagement.Scripting
 {
 	public class PowerShellHost : PSHost, IPowerShellHost
 	{
-		IScriptingConsole scriptingConsole;
+		IPackageManagementConsoleHost consoleHost;
 		CultureInfo currentUICulture = Thread.CurrentThread.CurrentUICulture;
 		CultureInfo currentCulture = Thread.CurrentThread.CurrentCulture;
 		Guid instanceId = Guid.NewGuid();
 		Runspace runspace;
 		PowerShellHostUserInterface userInterface;
 		List<string> modulesToImport = new List<string>();
+		PSObject privateData;
 		
-		public PowerShellHost(IScriptingConsole scriptingConsole)
+		public PowerShellHost(
+			IPackageManagementConsoleHost consoleHost,
+			object privateData)
 		{
-			this.scriptingConsole = scriptingConsole;
+			this.consoleHost = consoleHost;
-			userInterface = new PowerShellHostUserInterface(scriptingConsole);
+			this.privateData = new PSObject(privateData);
+			userInterface = new PowerShellHostUserInterface(consoleHost.ScriptingConsole);
+		}
+		
+		public override PSObject PrivateData {
+			get { return privateData; }
 		}
 		
 		public IList<string> ModulesToImport {
@@ -57,7 +65,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 				pipeline.Invoke();
 				
 			} catch (Exception ex) {
-				scriptingConsole.WriteLine(ex.Message, ScriptingStyle.Error);
+				consoleHost.ScriptingConsole.WriteLine(ex.Message, ScriptingStyle.Error);
 			}
 		}
 		
@@ -155,7 +163,7 @@ namespace ICSharpCode.PackageManagement.Scripting
 				pipeline.Invoke(input);
 				
 			} catch (Exception ex) {
-				scriptingConsole.WriteLine(ex.Message, ScriptingStyle.Error);
+				consoleHost.ScriptingConsole.WriteLine(ex.Message, ScriptingStyle.Error);
 			}
 		}
 	}

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

@@ -8,9 +8,11 @@ namespace ICSharpCode.PackageManagement.Scripting
 {
 	public class PowerShellHostFactory : IPowerShellHostFactory
 	{
-		public IPowerShellHost CreatePowerShellHost(IScriptingConsole scriptingConsole)
+		public IPowerShellHost CreatePowerShellHost(
+			IPackageManagementConsoleHost consoleHost,
+			object privateData)
 		{
-			return new PowerShellHost(scriptingConsole);
+			return new PowerShellHost(consoleHost, privateData);
 		}
 	}
 }

src/AddIns/Misc/PackageManagement/Test/PackageManagement.Tests.csproj

@@ -175,6 +175,7 @@
     <Compile Include="Src\PackageSourceViewModelTests.cs" />
     <Compile Include="Src\PackagesViewModelTests.cs" />
     <Compile Include="Src\ProcessPackageActionTests.cs" />
+    <Compile Include="Src\Scripting\ClearPackageManagementConsoleHostCommandTests.cs" />
     <Compile Include="Src\Scripting\PackageInitializeScriptFileNameTests.cs" />
     <Compile Include="Src\Scripting\PackageInitializeScriptTests.cs" />
     <Compile Include="Src\Scripting\PackageInstallScriptFileNameTests.cs" />

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

@@ -27,6 +27,7 @@ namespace PackageManagement.Tests.Helpers
 		
 		public bool IsDisposeCalled;
 		public bool IsClearCalled;
+		public bool IsWritePromptCalled;
 		public bool IsRunCalled;
 		
 		public void Dispose()
@@ -39,6 +40,11 @@ namespace PackageManagement.Tests.Helpers
 			IsClearCalled = true;
 		}
 		
+		public void WritePrompt()
+		{
+			IsWritePromptCalled = true;
+		}
+		
 		public void Run()
 		{
 			IsRunCalled = true;

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

@@ -9,12 +9,16 @@ namespace PackageManagement.Tests.Helpers
 {
 	public class FakePowerShellHostFactory : IPowerShellHostFactory
 	{
-		public IScriptingConsole ScriptingConsolePassedToCreatePowerShellHost;
+		public IPackageManagementConsoleHost ConsoleHostPassedToCreatePowerShellHost;
+		public object PrivateDataPassedToCreatePowerShellHost;
 		public FakePowerShellHost FakePowerShellHost = new FakePowerShellHost();
 		
-		public IPowerShellHost CreatePowerShellHost(IScriptingConsole scriptingConsole)
+		public IPowerShellHost CreatePowerShellHost(
+			IPackageManagementConsoleHost consoleHost,
+			object privateData)
 		{
-			ScriptingConsolePassedToCreatePowerShellHost = scriptingConsole;
+			ConsoleHostPassedToCreatePowerShellHost = consoleHost;
+			PrivateDataPassedToCreatePowerShellHost = privateData;
 			return FakePowerShellHost;
 		}
 	}

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

@@ -0,0 +1,33 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using ICSharpCode.PackageManagement.Scripting;
+using NUnit.Framework;
+using PackageManagement.Tests.Helpers;
+
+namespace PackageManagement.Tests.Scripting
+{
+	[TestFixture]
+	public class ClearPackageManagementConsoleHostCommandTests
+	{
+		ClearPackageManagementConsoleHostCommand command;
+		FakePackageManagementConsoleHost fakeConsoleHost;
+		
+		void CreateCommand()
+		{
+			fakeConsoleHost = new FakePackageManagementConsoleHost();
+			command = new ClearPackageManagementConsoleHostCommand(fakeConsoleHost);
+		}
+		
+		[Test]
+		public void ClearHost_MethodCalled_ClearsConsoleHost()
+		{
+			CreateCommand();
+			command.ClearHost();
+			
+			bool called = fakeConsoleHost.IsClearCalled;
+			Assert.IsTrue(called);
+		}
+	}
+}

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

@@ -92,10 +92,21 @@ namespace PackageManagement.Tests.Scripting
 			CreateHost();
 			RunHost();
 			
-			var actualConsole = host.FakePowerShellHostFactory.ScriptingConsolePassedToCreatePowerShellHost;
+			var actualHost = host.FakePowerShellHostFactory.ConsoleHostPassedToCreatePowerShellHost;
-			var expectedConsole = scriptingConsole;
+			var expectedHost = host;
 			
-			Assert.AreSame(expectedConsole, actualConsole);
+			Assert.AreSame(expectedHost, actualHost);
+		}
+		
+		[Test]
+		public void Run_ConsoleExitsOnFirstRead_PrivateDataIsSetToClearConsoleHostCommandObject()
+		{
+			CreateHost();
+			RunHost();
+			
+			var privateDataObject = host.FakePowerShellHostFactory.PrivateDataPassedToCreatePowerShellHost;
+			
+			Assert.IsInstanceOf(typeof(ClearPackageManagementConsoleHostCommand), privateDataObject);
 		}
 		
 		[Test]
@@ -107,6 +118,20 @@ namespace PackageManagement.Tests.Scripting
 			Assert.IsTrue(powerShellHost.IsSetRemoteSignedExecutionPolicyCalled);
 		}
 		
+		[Test]
+		public void Run_ConsoleExitsOnFirstRead_ClearHostFunctionIsRedefined()
+		{
+			CreateHost();
+			RunHost();
+			
+			string expectedExecutedScript = 
+				"function Clear-Host { $host.PrivateData.ClearHost() }";
+			
+			bool executed = powerShellHost.AllCommandsPassedToExecuteCommand.Contains(expectedExecutedScript);
+			
+			Assert.IsTrue(executed);
+		}
+		
 		[Test]
 		public void Run_ConsoleExitsOnFirstRead_PromptTextWrittenToConsole()
 		{
@@ -151,17 +176,22 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Run_ConsoleExitsOnFirstRead_NoCommandsPassedToPowerShellHost()
+		public void Run_TwoCommandsEnteredByUser_FirstCommandExecuted()
 		{
 			CreateHost();
-			powerShellHost.CommandPassedToExecuteCommand = "test";
+			var commands = new string[] { "one", "two" };
+			scriptingConsole.AllTextToReturnFromReadLine.AddRange(commands);
+			
+			host.ScriptingConsole = scriptingConsole;
 			RunHost();
 			
-			Assert.AreEqual("test", powerShellHost.CommandPassedToExecuteCommand);
+			bool executed = powerShellHost.AllCommandsPassedToExecuteCommand.Contains("one");
+			
+			Assert.IsTrue(executed);
 		}
 		
 		[Test]
-		public void Run_TwoCommandsEnteredByUser_BothCommandsExecuted()
+		public void Run_TwoCommandsEnteredByUser_SecondCommandExecuted()
 		{
 			CreateHost();
 			var commands = new string[] { "one", "two" };
@@ -170,7 +200,9 @@ namespace PackageManagement.Tests.Scripting
 			host.ScriptingConsole = scriptingConsole;
 			RunHost();
 			
-			Assert.AreEqual(commands, powerShellHost.AllCommandsPassedToExecuteCommand);
+			bool executed = powerShellHost.AllCommandsPassedToExecuteCommand.Contains("two");
+			
+			Assert.IsTrue(executed);
 		}
 		
 		[Test]
@@ -407,10 +439,11 @@ namespace PackageManagement.Tests.Scripting
 		}
 		
 		[Test]
-		public void Clear_ConsoleWindowHasOutputText_PromptWritten()
+		public void WritePrompt_ConsoleWindowHasOutputText_PromptWritten()
 		{
 			CreateHost();
 			host.Clear();
+			host.WritePrompt();
 			
 			var expectedTextPassedToWrite = new String[] { "PM> "};
 			var actualTextPassedToWrite = scriptingConsole.AllTextPassedToWrite;

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

@@ -476,6 +476,15 @@ namespace PackageManagement.Tests.Scripting
 			Assert.IsTrue(consoleHost.IsClearCalled);
 		}
 		
+		[Test]
+		public void ClearConsole_CommandExecuted_WritesPrompt()
+		{
+			CreateViewModel();
+			viewModel.ClearConsole();
+			
+			Assert.IsTrue(consoleHost.IsWritePromptCalled);
+		}
+		
 		[Test]
 		public void Constructor_NewViewModelCreated_ConsoleSetOnConsoleHost()
 		{