Ensure template files end with newline and add validation test

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWebCSharp.1.Client/_Imports.razor

@@ -12,4 +12,4 @@
 @using BlazorWebCSharp._1.Client
 @*#if (UseWebAssembly && InteractiveAtRoot) -->
 @using BlazorWebCSharp._1.Client.Layout
-##endif*@
+##endif*@

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWebCSharp.1/Components/Pages/NotFound.razor

@@ -2,4 +2,4 @@
 @layout MainLayout
 
 <h3>Not Found</h3>
-<p>Sorry, the content you are looking for does not exist.</p>
+<p>Sorry, the content you are looking for does not exist.</p>

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWebCSharp.1/wwwroot/app.css

@@ -59,4 +59,4 @@ h1:focus {
 
 .form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
     text-align: start;
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Pages/NotFound.razor

@@ -2,4 +2,4 @@
 @layout MainLayout
 
 <h3>Not Found</h3>
-<p>Sorry, the content you are looking for does not exist.</p>
+<p>Sorry, the content you are looking for does not exist.</p>

src/ProjectTemplates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/wwwroot/css/app.css

@@ -114,4 +114,4 @@ code {
 
 .form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
     text-align: start;
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/wwwroot/css/site.css

@@ -28,4 +28,4 @@ body {
 
 .form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
   text-align: start;
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/wwwroot/css/site.css

@@ -28,4 +28,4 @@ body {
 
 .form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
   text-align: start;
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-FSharp/wwwroot/css/site.css

@@ -71,4 +71,4 @@ body {
 
 .form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
   text-align: start;
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/cs/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Použití ovladačů",
     "parameter.UseMinimalAPIs.description": "Místo minimálních rozhraní API používejte kontrolery."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/de/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Controller verwenden",
     "parameter.UseMinimalAPIs.description": "Verwenden Sie Controller anstelle minimaler APIs."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/dotnetcli.host.json

@@ -99,4 +99,4 @@
   "usageExamples": [
     ""
   ]
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/es/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Utilizar controladores",
     "parameter.UseMinimalAPIs.description": "Utilice controladores en lugar de API mínimas."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/fr/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Utiliser des contrôleurs",
     "parameter.UseMinimalAPIs.description": "Utilisez des contrôleurs à la place des API minimales."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/it/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Usa i controller",
     "parameter.UseMinimalAPIs.description": "Usa i controller anziché le API minime."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/ja/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "コントローラーを使用する",
     "parameter.UseMinimalAPIs.description": "最小限の API ではなくコントローラーを使用します。"
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/ko/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "컨트롤러 사용",
     "parameter.UseMinimalAPIs.description": "최소 API 대신 컨트롤러를 사용합니다."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/pl/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Użyj kontrolerów",
     "parameter.UseMinimalAPIs.description": "Użyj kontrolerów zamiast minimalnych interfejsów API."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/pt-BR/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Usar controles",
     "parameter.UseMinimalAPIs.description": "Use controles em vez de APIs mínimas."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/ru/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Использовать контроллеры",
     "parameter.UseMinimalAPIs.description": "Используйте контроллеры вместо минимальных API."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/tr/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "Denetleyicileri kullan",
     "parameter.UseMinimalAPIs.description": "Minimal API yerine denetleyicileri kullanın."
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/zh-Hans/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "使用控制器",
     "parameter.UseMinimalAPIs.description": "使用控制器而不是最小 API。"
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApi-CSharp/.template.config/zh-Hant/strings.json

@@ -8,4 +8,4 @@
     "parameter.UseMinimalAPIs.name": "使用控制器",
     "parameter.UseMinimalAPIs.description": "使用控制器，而不使用最小 API。"
   }
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApiAot-CSharp/.template.config/dotnetcli.host.json

@@ -30,4 +30,4 @@
   "usageExamples": [
     ""
   ]
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApiAot-CSharp/.template.config/ide.host.json

@@ -26,4 +26,4 @@
       "persistenceScope": "templateGroup"
     }
   ]
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/WebApiAot-CSharp/.template.config/template.json

@@ -162,4 +162,4 @@
       "continueOnError": true
     }
   ]
-}
+}

src/ProjectTemplates/Web.ProjectTemplates/content/Worker-FSharp/Program.fs

@@ -16,4 +16,4 @@ module Program =
 
         builder.Build().Run()
 
-        0 // exit code
+        0 // exit code

src/ProjectTemplates/test/Templates.Tests/NewlineEndingTest.cs

@@ -0,0 +1,91 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Microsoft.AspNetCore.InternalTesting;
+using Templates.Test.Helpers;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace Templates.Test;
+
+public class NewlineEndingTest : LoggedTest
+{
+    private ITestOutputHelper _output;
+    public ITestOutputHelper Output
+    {
+        get
+        {
+            if (_output == null)
+            {
+                _output = new TestOutputLogger(Logger);
+            }
+            return _output;
+        }
+    }
+
+    [Theory]
+    [InlineData("Web.ProjectTemplates")]
+    [InlineData("Web.ItemTemplates")]
+    [InlineData("Web.Client.ItemTemplates")]
+    public void TemplateFiles_ShouldEndWithNewline(string projectName)
+    {
+        var templateDirectoryPath = GetTemplateDirectoryPath(projectName);
+
+        var filesWithoutNewlineEnding = new List<string>();
+
+        // Get all template source files (excluding third-party libraries and auto-generated localization files)
+        var files = Directory.GetFiles(templateDirectoryPath, "*.cs", SearchOption.AllDirectories)
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.fs", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.razor", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.cshtml", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.css", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.js", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.ts", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.tsx", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.html", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.json", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.xml", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.csproj", SearchOption.AllDirectories))
+            .Concat(Directory.GetFiles(templateDirectoryPath, "*.fsproj", SearchOption.AllDirectories))
+            .Where(f => !f.Contains($"{Path.DirectorySeparatorChar}wwwroot{Path.DirectorySeparatorChar}lib{Path.DirectorySeparatorChar}")) // Exclude third-party libraries
+            .Where(f => !f.Contains($"{Path.DirectorySeparatorChar}.template.config{Path.DirectorySeparatorChar}localize{Path.DirectorySeparatorChar}")); // Exclude auto-generated localization files in localize directory
+
+        foreach (var file in files)
+        {
+            var filePath = Path.GetFullPath(file);
+
+            // Skip empty files before opening the stream
+            var fileInfo = new FileInfo(filePath);
+            if (fileInfo.Length == 0)
+            {
+                continue;
+            }
+
+            // Check if file ends with newline (0x0a)
+            using var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
+            fileStream.Seek(-1, SeekOrigin.End);
+            var lastByte = fileStream.ReadByte();
+
+            if (lastByte != 0x0a) // LF
+            {
+                Output.WriteLine($"File {filePath} does not end with a newline.");
+                filesWithoutNewlineEnding.Add(filePath);
+            }
+        }
+
+        Assert.False(filesWithoutNewlineEnding.Any(), $"Found {filesWithoutNewlineEnding.Count} file(s) without newline ending.");
+    }
+
+    private string GetTemplateDirectoryPath(string projectName)
+    {
+        var currentDirectory = Directory.GetCurrentDirectory();
+        var AssetsDir = Path.Combine(currentDirectory, "Assets");
+        var path = Path.Combine(projectName, "content");
+        var templateDirectoryPath = Path.Combine(AssetsDir, path);
+
+        return templateDirectoryPath;
+    }
+}