Remove BOM from json files (#369)

Addresses #276

src/Microsoft.AspNetCore.SpaTemplates/content/Aurelia-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.AspNetCore.SpaTemplates/content/Knockout-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.AspNetCore.SpaTemplates/content/Vue-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.ProjectTemplates/content/RazorPagesWeb-CSharp/appsettings.json

@@ -1,4 +1,4 @@
-{
+{
 ////#if (IndividualB2CAuth)
 //  "AzureAdB2C": {
 //    "Instance": "https:////login.microsoftonline.com/tfp/",

src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-CSharp/appsettings.json

@@ -1,4 +1,4 @@
-{
+{
 ////#if (IndividualB2CAuth)
 //  "AzureAdB2C": {
 //    "Instance": "https:////login.microsoftonline.com/tfp/",

src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-FSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.ProjectTemplates/content/StarterWeb-FSharp/appsettings.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Warning"

src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-CSharp/appsettings.json

@@ -1,4 +1,4 @@
-{
+{
 ////#if (IndividualB2CAuth)
 //  "AzureAdB2C": {
 //    "Instance": "https:////login.microsoftonline.com/tfp/",

src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-FSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.ProjectTemplates/content/WebApi-FSharp/appsettings.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Warning"

src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/Angular-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/React-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

src/Microsoft.DotNet.Web.Spa.ProjectTemplates/content/ReactRedux-CSharp/appsettings.Development.json

@@ -1,4 +1,4 @@
-{
+{
   "Logging": {
     "LogLevel": {
       "Default": "Debug",

test/Templates.Test/ByteOrderMarkTest.cs

@@ -0,0 +1,59 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.IO;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace Templates.Test
+{
+    public class ByteOrderMarkTest
+    {
+        private readonly ITestOutputHelper _output;
+
+        public ByteOrderMarkTest(ITestOutputHelper output)
+        {
+            _output = output;
+        }
+
+        [Theory]
+        [InlineData(@"\Microsoft.AspNetCore.SpaTemplates\content")]
+        [InlineData(@"\Microsoft.DotNet.Web.ProjectTemplates\content")]
+        [InlineData(@"\Microsoft.DotNet.Web.Spa.ProjectTemplates\content")]
+        public void CheckForByteOrderMarkSpaTemplates(string path)
+        {
+            var currentDirectory = Directory.GetCurrentDirectory();
+            var srcDirectory = Path.GetFullPath(Path.Combine(currentDirectory, @"..\..\..\..\..\src"));
+            var directories = Directory.GetDirectories(srcDirectory + path, "*Sharp");
+
+            var filesWithBOMCharactersPresent = false;
+            foreach (var directory in directories)
+            {
+                var files = Directory.GetFiles(directory, "*.json");
+                foreach (var file in files)
+                {
+                    var filePath = Path.GetFullPath(file);
+                    var fileStream = new FileStream(filePath, FileMode.Open);
+
+                    var bytes = new byte[3];
+                    fileStream.Read(bytes, 0, 3);
+
+                    // Check for UTF8 BOM 0xEF,0xBB,0xBF
+                    if (bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF)
+                    {
+                        _output.WriteLine($"File {filePath} has UTF-8 BOM characters.");
+                        filesWithBOMCharactersPresent = true;
+                    }
+                    // Check for UTF16 BOM 0xFF, 0xFE
+                    if (bytes[0] == 0xFF && bytes[1] == 0xFE)
+                    {
+                        _output.WriteLine($"File {filePath} has UTF-16 BOM characters.");
+                        filesWithBOMCharactersPresent = true;
+                    }
+                }
+            }
+
+            Assert.False(filesWithBOMCharactersPresent);
+        }
+    }
+}