Normalize the tool assembly path before using it as the base for pipe name

src/Microsoft.AspNetCore.Razor.Tasks/DotnetToolTask.cs

@@ -122,7 +122,7 @@ namespace Microsoft.AspNetCore.Razor.Tasks
                 Log.LogMessage(StandardOutputLoggingImportance, $"ServerResponseFile = '{responseFileCommands}'");
 
                 // The server contains the tools for discovering tag helpers and generating Razor code.
-                var clientDir = Path.GetDirectoryName(ToolAssembly);
+                var clientDir = Path.GetFullPath(Path.GetDirectoryName(ToolAssembly));
                 var workingDir = CurrentDirectoryToUse();
                 var tempDir = ServerConnection.GetTempPath(workingDir);
                 var serverPaths = new ServerPaths(

src/Microsoft.AspNetCore.Razor.Tools/ShutdownCommand.cs

@@ -65,7 +65,7 @@ namespace Microsoft.AspNetCore.Razor.Tools
                             Error.Write(ex);
                         }
 
-                        Out.Write("Server pid:{0} shut down", response.ServerProcessId);
+                        Out.Write("Server pid:{0} shut down completed.", response.ServerProcessId);
                     }
                 }
             }

test/Microsoft.AspNetCore.Razor.Design.Test/IntegrationTests/BuildServerIntegrationTest.cs

@@ -2,9 +2,13 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Razor.Language;
+using Microsoft.AspNetCore.Razor.Tools;
 using Microsoft.AspNetCore.Testing.xunit;
+using Microsoft.CodeAnalysis;
+using Moq;
 using Xunit;
 
 namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
@@ -133,5 +137,27 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
             // Note: We don't need to handle server clean up here because it will fail before
             // it reaches server creation part.
         }
+
+        [Fact]
+        [InitializeTestProject("SimpleMvc")]
+        public async Task ManualServerShutdown_NoPipeName_ShutsDownServer()
+        {
+            var toolAssembly = typeof(Application).Assembly.Location;
+            var result = await DotnetMSBuild(
+                "Build",
+                $"/p:_RazorForceBuildServer=true /p:_RazorToolAssembly={toolAssembly}",
+                suppressBuildServer: true); // We don't want to specify a pipe name
+
+            Assert.BuildPassed(result);
+
+            // Shutdown the server
+            var output = new StringWriter();
+            var error = new StringWriter();
+            var application = new Application(CancellationToken.None, Mock.Of<ExtensionAssemblyLoader>(), Mock.Of<ExtensionDependencyChecker>(), (path, properties) => Mock.Of<PortableExecutableReference>(), output, error);
+            var exitCode = application.Execute("shutdown", "-w");
+
+            Assert.Equal(0, exitCode);
+            Assert.Contains("shut down completed", output.ToString());
+        }
     }
 }

test/Microsoft.AspNetCore.Razor.Design.Test/IntegrationTests/BuildServerTestFixture.cs

@@ -39,11 +39,8 @@ namespace Microsoft.AspNetCore.Razor.Design.IntegrationTests
                     throw new TimeoutException($"Shutting down the build server at pipe {PipeName} took longer than expected.{Environment.NewLine}Output: {output}.");
                 });
 
-                var application = new Application(cts.Token, Mock.Of<ExtensionAssemblyLoader>(), Mock.Of<ExtensionDependencyChecker>(), (path, properties) => Mock.Of<PortableExecutableReference>())
+                var application = new Application(cts.Token, Mock.Of<ExtensionAssemblyLoader>(), Mock.Of<ExtensionDependencyChecker>(), (path, properties) => Mock.Of<PortableExecutableReference>(), writer, writer);
-                {
+
-                    Out = writer,
-                    Error = writer,
-                };
                 var exitCode = application.Execute("shutdown", "-w", "-p", PipeName);
                 if (exitCode != 0)
                 {