Fixup test

Author: pranavkm

src/ProjectTemplates/Shared/AspNetProcess.cs

@@ -42,6 +42,7 @@ public AspNetProcess(
             IDictionary<string, string> environmentVariables,
             bool published,
             bool hasListeningUri = true,
+            bool usePublishedAppHost = false,
             ILogger logger = null)
         {
             _developmentCertificate = DevelopmentCertificate.Create(workingDirectory);
@@ -64,9 +65,17 @@ public AspNetProcess(
             string arguments;
             if (published)
             {
-                // When publishingu used the app host to run the app. This makes it easy to consistently run for regular and single-file publish
-                process = OperatingSystem.IsWindows() ? dllPath + ".exe" : dllPath;
-                arguments = null;
+                if (usePublishedAppHost)
+                {
+                    // When publishingu used the app host to run the app. This makes it easy to consistently run for regular and single-file publish
+                    process = Path.ChangeExtension(dllPath, OperatingSystem.IsWindows() ? ".exe" : null);
+                    arguments = null;
+                }
+                else
+                {
+                    process = DotNetMuxer.MuxerPathOrDefault();
+                    arguments = $"exec {dllPath}";
+                }
             }
             else
             {

src/ProjectTemplates/Shared/Project.cs

@@ -179,7 +179,7 @@ internal AspNetProcess StartBuiltProjectAsync(bool hasListeningUri = true, ILogg
             return new AspNetProcess(Output, TemplateOutputDir, projectDll, environment, published: false, hasListeningUri: hasListeningUri, logger: logger);
         }
 
-        internal AspNetProcess StartPublishedProjectAsync(bool hasListeningUri = true)
+        internal AspNetProcess StartPublishedProjectAsync(bool hasListeningUri = true, bool usePublishedAppHost = false)
         {
             var environment = new Dictionary<string, string>
             {
@@ -190,8 +190,8 @@ internal AspNetProcess StartPublishedProjectAsync(bool hasListeningUri = true)
                 ["ASPNETCORE_Logging__Console__FormatterOptions__IncludeScopes"] = "true",
             };
 
-            var projectDll = Path.Combine(TemplatePublishDir, ProjectName);
-            return new AspNetProcess(Output, TemplatePublishDir, projectDll, environment, published: true, hasListeningUri: hasListeningUri);
+            var projectDll = Path.Combine(TemplatePublishDir, $"{ProjectName}.dll");
+            return new AspNetProcess(Output, TemplatePublishDir, projectDll, environment, published: true, hasListeningUri: hasListeningUri, usePublishedAppHost: usePublishedAppHost);
         }
 
         internal async Task<ProcessResult> RunDotNetEfCreateMigrationAsync(string migrationName)

src/ProjectTemplates/test/MvcTemplateTest.cs

@@ -243,7 +243,7 @@ public async Task MvcTemplate_SingleFileExe()
                 return;
             }
 
-            Project = await ProjectFactory.GetOrCreateProject("mvcindividualuld", Output);
+            Project = await ProjectFactory.GetOrCreateProject("mvcsinglefileexe", Output);
             Project.RuntimeIdentifier = runtimeIdentifer;
 
             var createResult = await Project.RunDotNetNewAsync("mvc", auth: "Individual", useLocalDB: true);
@@ -286,7 +286,7 @@ public async Task MvcTemplate_SingleFileExe()
                 },
             };
 
-            using var aspNetProcess = Project.StartPublishedProjectAsync();
+            using var aspNetProcess = Project.StartPublishedProjectAsync(usePublishedAppHost: true);
             Assert.False(
                 aspNetProcess.Process.HasExited,
                 ErrorMessages.GetFailedProcessMessageOrEmpty("Run published project", Project, aspNetProcess.Process));