ImageSharp.Tests (.NET Core!) test profiling is now possible from R# context menu

tests/ImageSharp.Sandbox46/README.md

@@ -1,7 +1,7 @@
 ## Purpose
 This project aims to workaround certain .NET Core tooling issues in Visual Studio based developer workflow at the time of it's creation (January 2017):
 - .NET Core Performance profiling is not possible neither with Visual Studio nor with JetBrains profilers
-- JetBrains Unit Test explorer does not work with .NET Core projects
+- ~~JetBrains Unit Test explorer does not work with .NET Core projects~~
 
 ## How does it work?
 - By referencing .NET 4.5 dll-s created by net45 target's of ImageSharp projects. NOTE: These are not project references!
@@ -16,10 +16,9 @@ This project aims to workaround certain .NET Core tooling issues in Visual Studi
 - Use the [context menu in Test Explorer](https://adamprescott.net/2012/12/12/performance-profiling-for-unit-tests/)
 
 NOTE: 
-There was no *Profile test* option in my VS Professional. Maybe things were messed by VS2017 RC installation. [This post suggests](http://stackoverflow.com/questions/32034375/profiling-tests-in-visual-studio-community-2015) it's necessary to won Premium or Ultimate edition of Visual Studio to profile tests.
+There was no *Profile test* option in my VS Professional. Maybe things were messed by VS2017 RC installation. [This post suggests](http://stackoverflow.com/questions/32034375/profiling-tests-in-visual-studio-community-2015) it's necessary to own Premium or Ultimate edition of Visual Studio to profile tests.
 
 #### 2. With JetBrains ReSharper Ultimate
-- Use the [context menu](https://www.jetbrains.com/resharper/features/unit_testing.html) from your test class
-![Context Menu](https://www.jetbrains.com/resharper/features/screenshots/100/unit_testing_profiling.png)
-- Or Unit Test Exporer or Unit Test Sessions
-- When working with test classes, make sure you open them from the `ImageSharp.Sandbox46` project!
+- The `Sandbox46` project is no longer needed here. The classic `ImageSharp.Tests` project can be discovered by Unit Test Explorer.
+- You can use [context menus](https://www.jetbrains.com/resharper/features/unit_testing.html) from your test class, or from unit Test Exporer/Unit Test Sessions windows.
+![Context Menu](https://www.jetbrains.com/resharper/features/screenshots/100/unit_testing_profiling.png) 

tests/ImageSharp.Tests/TestFile.cs

@@ -5,9 +5,12 @@
 
 namespace ImageSharp.Tests
 {
+    using System;
     using System.Collections.Concurrent;
+    using System.Collections.Generic;
     using System.IO;
     using System.Linq;
+    using System.Reflection;
 
     /// <summary>
     /// A test image file.
@@ -130,14 +133,19 @@ namespace ImageSharp.Tests
         /// </returns>
         private static string GetFormatsDirectory()
         {
-            var directories = new[] {
+            List<string> directories = new List< string > {
                  "TestImages/Formats/", // Here for code coverage tests.
                   "tests/ImageSharp.Tests/TestImages/Formats/", // from travis/build script
                   "../../../ImageSharp.Tests/TestImages/Formats/", // from Sandbox46
                   "../../../../TestImages/Formats/"
             };
 
-            directories= directories.Select(x => Path.GetFullPath(x)).ToArray();
+            directories = directories.SelectMany(x => new[]
+                                     {
+                                         Path.GetFullPath(x)
+                                     }).ToList();
+
+            AddFormatsDirectoryFromTestAssebmlyPath(directories);
 
             var directory = directories.FirstOrDefault(x => Directory.Exists(x));
 
@@ -148,5 +156,23 @@ namespace ImageSharp.Tests
 
             throw new System.Exception($"Unable to find Formats directory at any of these locations [{string.Join(", ", directories)}]");
         }
+
+        /// <summary>
+        /// The path returned by Path.GetFullPath(x) can be relative to dotnet framework directory
+        /// in certain scenarios like dotTrace test profiling.
+        /// </summary>
+        /// <param name="directories">The directories list</param>
+        private static void AddFormatsDirectoryFromTestAssebmlyPath(List<string> directories)
+        {
+            string assemblyLocation = typeof(TestFile).GetTypeInfo().Assembly.Location;
+            assemblyLocation = Path.GetDirectoryName(assemblyLocation);
+
+            if (assemblyLocation != null)
+            {
+                string dirFromAssemblyLocation = Path.Combine(assemblyLocation, "../../../TestImages/Formats/");
+                dirFromAssemblyLocation = Path.GetFullPath(dirFromAssemblyLocation);
+                directories.Add(dirFromAssemblyLocation);
+            }
+        }
     }
 }