Move test projects from src/ to tests/ (#11357)

* Update gitignore

* Move csproj

* Update project references

* Update solutions

* Update build scripts

* Tests used to share editorconfig with projects in src

* Fix broken tests.

* Stop copying around .editorconfig

merged root one with linting

* csharp_style_expression_bodied -> suggestion

* Move StyleCop rulesets to matching directories and update shared build properties

* Remove legacy build files, update NuGet.cofig and solution files

* Restore myget source

* Clean up .gitignore

* Update .gitignore

* Move new test classes to tests after merge

* Gitignore + nuget config

* Move new test

Co-authored-by: Ronald Barendse <ronald@barend.se>

tests/Umbraco.Tests.UnitTests/Umbraco.Core/HexEncoderTests.cs

@@ -0,0 +1,75 @@
+// Copyright (c) Umbraco.
+// See LICENSE for more details.
+
+using System;
+using System.Text;
+using NUnit.Framework;
+using Umbraco.Cms.Core;
+
+namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Core
+{
+    public class HexEncoderTests
+    {
+        [Test]
+        public void ToHexStringCreatesCorrectValue()
+        {
+            var buffer = new byte[255];
+            var random = new Random();
+            random.NextBytes(buffer);
+
+            var sb = new StringBuilder(buffer.Length * 2);
+            for (var i = 0; i < buffer.Length; i++)
+            {
+                sb.Append(buffer[i].ToString("X2"));
+            }
+
+            var expected = sb.ToString();
+
+            var actual = HexEncoder.Encode(buffer);
+            Assert.AreEqual(expected, actual);
+        }
+
+        [Test]
+        public void ToHexStringWithSeparatorCreatesCorrectValue()
+        {
+            var buffer = new byte[255];
+            var random = new Random();
+            random.NextBytes(buffer);
+
+            var expected = ToHexString(buffer, '/', 2, 4);
+            var actual = HexEncoder.Encode(buffer, '/', 2, 4);
+
+            Assert.AreEqual(expected, actual);
+        }
+
+        private static readonly char[] s_bytesToHexStringLookup = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+
+        // Reference implementation taken from original extension method.
+        private static string ToHexString(byte[] bytes, char separator, int blockSize, int blockCount)
+        {
+            int p = 0, bytesLength = bytes.Length, count = 0, size = 0;
+            var chars = new char[(bytesLength * 2) + blockCount];
+            for (var i = 0; i < bytesLength; i++)
+            {
+                var b = bytes[i];
+                chars[p++] = s_bytesToHexStringLookup[b / 0x10];
+                chars[p++] = s_bytesToHexStringLookup[b % 0x10];
+                if (count == blockCount)
+                {
+                    continue;
+                }
+
+                if (++size < blockSize)
+                {
+                    continue;
+                }
+
+                chars[p++] = separator;
+                size = 0;
+                count++;
+            }
+
+            return new string(chars, 0, chars.Length);
+        }
+    }
+}