Added a .NET Core test app

build.cake

@@ -161,8 +161,11 @@ Task ("libs")
 
 Task ("tests")
     .IsDependentOn ("libs")
+    .IsDependentOn ("nuget")
     .Does (() => 
 {
+    ClearSkiaSharpNuGetCache ();
+
     RunNuGetRestore ("./tests/SkiaSharp.Desktop.Tests/SkiaSharp.Desktop.Tests.sln");
     
     // Windows (x86 and x64)
@@ -185,6 +188,11 @@ Task ("tests")
         });
         RunTests("./tests/SkiaSharp.Desktop.Tests/bin/AnyCPU/Release/SkiaSharp.Desktop.Tests.dll", false);
     }
+    // .NET Core
+    RunDotNetCoreRestore ("./tests/SkiaSharp.NetCore.Tests");
+    DotNetCoreTest ("./tests/SkiaSharp.NetCore.Tests", new DotNetCoreTestSettings {
+        Configuration = "Release"
+    });
 });
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////

cake/UtilsManaged.cake

@@ -9,6 +9,14 @@ var RunNuGetRestore = new Action<FilePath> ((solution) =>
     });
 });
 
+var RunDotNetCoreRestore = new Action<string> ((solution) =>
+{
+    DotNetCoreRestore (solution, new DotNetCoreRestoreSettings { 
+        Sources = NuGetSources,
+        Verbosity = DotNetCoreRestoreVerbosity.Verbose
+    });
+});
+
 var PackageNuGet = new Action<FilePath, DirectoryPath> ((nuspecPath, outputPath) =>
 {
     if (!DirectoryExists (outputPath)) {

tests/SkiaSharp.NetCore.Tests/project.json

@@ -0,0 +1,47 @@
+{
+    "version": "1.0.0-*",
+    "buildOptions": {
+        "debugType": "portable",
+        "define": [
+            "NET_STANDARD"
+        ],
+        "allowUnsafe": true,
+        "compile": {
+            "include": "../Tests/*.cs",
+            "excludeFiles":[
+                "../Tests/SKSurfaceTest.cs"
+            ]
+        },
+        "copyToOutput": {
+            "mappings": {
+                "fonts/": { "include": "../Content/fonts/" },
+                "images/": { "include": "../Content/images/" }
+            }
+        }
+    },
+    "dependencies": {
+        "xunit": "2.2.0-beta5-build3474",
+        "dotnet-test-xunit": "2.2.0-preview2-build1029",
+
+        "SkiaSharp": "1.56.0",
+        "SkiaSharp.Svg": "1.56.0-beta1"
+    },
+    "testRunner": "xunit",
+    "frameworks": {
+        "netcoreapp1.0": {
+            "dependencies": {
+                "Microsoft.NETCore.App": {
+                    "version": "1.0.0"
+                }
+            },
+            "imports": [
+                "portable-net451+win8"
+            ]
+        }
+    },
+    "runtimes": {
+        "win7-x64": { },
+        "win7-x86": { },
+        "osx.10.10-x64": { }
+    }
+}

tests/Tests/SKStringTest.cs

@@ -9,7 +9,7 @@ namespace SkiaSharp.Tests
 		[Fact]
 		public void StringIsMarshaledCorrectly ()
 		{
-			using (var typeface = SKTypeface.FromFile (Path.Combine ("fonts", "SpiderSymbol.ttf")))
+			using (var typeface = SKTypeface.FromFile (Path.Combine (PathToFonts, "SpiderSymbol.ttf")))
 			{
 				Assert.Equal ("SpiderSymbol", typeface.FamilyName);
 			}

tests/Tests/SKTest.cs

@@ -1,4 +1,6 @@
 using System;
+using System.IO;
+using System.Reflection;
 using System.Runtime.InteropServices;
 using Xunit;
 
@@ -6,13 +8,17 @@ namespace SkiaSharp.Tests
 {
 	public abstract class SKTest
 	{
-		protected const string PathToFonts = "fonts";
-		protected const string PathToImages = "images";
-
 #if NET_STANDARD
+		protected static readonly string PathToAssembly = Path.GetDirectoryName(typeof(SKTest).GetTypeInfo().Assembly.Location);
+		protected static readonly string PathToFonts = Path.Combine(PathToAssembly, "fonts");
+		protected static readonly string PathToImages = Path.Combine(PathToAssembly, "images");
+
 		protected static bool IsUnix => RuntimeInformation.IsOSPlatform(OSPlatform.OSX) || RuntimeInformation.IsOSPlatform(OSPlatform.Linux);
 		protected static bool IsWindows => RuntimeInformation.IsOSPlatform(OSPlatform.Windows);
 #else
+		protected const string PathToFonts = "fonts";
+		protected const string PathToImages = "images";
+
 		protected static bool IsUnix => Environment.OSVersion.Platform == PlatformID.MacOSX || Environment.OSVersion.Platform == PlatformID.Unix;
 		protected static bool IsWindows => !IsUnix;
 #endif

tools/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-    <package id="Cake" version="0.11.0" />
+    <package id="Cake" version="0.17.0" />
     <package id="XUnit.Runner.Console" version="2.1.0" />
     <package id="Microsoft.DotNet.BuildTools.GenAPI" version="1.0.0-beta-00081" />
 </packages>