Add the test project for dnxcore.

StackExchange.Redis.Tests_dnxcore50/StackExchange.Redis.Tests/StackExchange.Redis.Tests.xproj

+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\DNX\Microsoft.DNX.Props" Condition="'$(VSToolsPath)' != ''" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>a51dca17-e8f1-44e1-9a37-328fab14d2ce</ProjectGuid>
+    <RootNamespace>StackExchange.Redis.Tests</RootNamespace>
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">..\..\StackExchange.Redis_dnxcore50\StackExchange.Redis\artifacts\obj\$(MSBuildProjectName)</BaseIntermediateOutputPath>
+    <OutputPath Condition="'$(OutputPath)'=='' ">..\..\StackExchange.Redis_dnxcore50\StackExchange.Redis\artifacts\bin\$(MSBuildProjectName)\</OutputPath>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\DNX\Microsoft.DNX.targets" Condition="'$(VSToolsPath)' != ''" />
+</Project>
\ No newline at end of file

StackExchange.Redis.Tests_dnxcore50/StackExchange.Redis.Tests/project.json

+{
+  "version": "1.0.0-*",
+  "description": "StackExchange.Redis.Tests",
+  "authors": [ "jeremymeng" ],
+  "tags": [ "" ],
+  "projectUrl": "",
+  "licenseUrl": "",
+
+  "compile": [
+    "../../StackExchange.Redis.Tests/**/*.cs"
+  ],
+
+  "dependencies": {
+    "StackExchange.Redis": ""
+  },
+
+  "frameworks": {
+    "dnxcore50": {
+      "compilationOptions": {
+        "define": [ "NETCORE" ],
+        "allowUnsafe": true,
+        "warningsAsErrors": false
+      },
+      "dependencies": {
+        "System.Diagnostics.Debug": "4.0.0",
+        "System.Diagnostics.TraceSource": "4.0.0-beta-*",
+        "System.Diagnostics.Tools": "4.0.0-beta-*",
+        "System.IO.Compression": "4.0.0",
+        "System.Globalization": "4.0.10",
+        "System.Linq": "4.0.0",
+        "System.Net.Primitives": "4.0.10",
+        "System.Net.Sockets": "4.1.0-beta-*",
+        "System.Net.Security": "4.0.0-beta-*",
+        "System.Net.NameResolution": "4.0.0-beta-*",
+        "System.Reflection": "4.0.0",
+        "System.Reflection.Emit": "4.0.0",
+        "System.Reflection.TypeExtensions": "4.0.0",
+        "System.Reflection.Primitives": "4.0.0",
+        "System.Reflection.Emit.Lightweight": "4.0.0",
+        "System.Security.Cryptography.Algorithms": "4.0.0-beta-*",
+        "System.Security.Cryptography.Hashing.Algorithms": "4.0.0-beta-*",
+        "System.Security.Cryptography.X509Certificates": "4.0.0-beta-*",
+        "System.Text.RegularExpressions": "4.0.0",
+        "System.Threading": "4.0.0",
+        "System.Threading.Thread": "4.0.0-*",
+        "System.Threading.ThreadPool": "4.0.10-beta-*",
+        "System.Threading.Timer": "4.0.1-beta-*",
+        "System.Threading.Tasks": "4.0.0",
+        "nunit": "3.0.0-beta-5"
+      }
+    }
+  }
+}
\ No newline at end of file

StackExchange.Redis.dnx.sln

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 14
+VisualStudioVersion = 14.0.23107.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "StackExchange.Redis", "StackExchange.Redis_dnxcore50\StackExchange.Redis\StackExchange.Redis.xproj", "{86526B5C-1163-4481-A5E2-A303A0BB1535}"
+EndProject
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "StackExchange.Redis.Tests", "StackExchange.Redis.Tests_dnxcore50\StackExchange.Redis.Tests\StackExchange.Redis.Tests.xproj", "{A51DCA17-E8F1-44E1-9A37-328FAB14D2CE}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{86526B5C-1163-4481-A5E2-A303A0BB1535}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{86526B5C-1163-4481-A5E2-A303A0BB1535}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{86526B5C-1163-4481-A5E2-A303A0BB1535}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{86526B5C-1163-4481-A5E2-A303A0BB1535}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A51DCA17-E8F1-44E1-9A37-328FAB14D2CE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A51DCA17-E8F1-44E1-9A37-328FAB14D2CE}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A51DCA17-E8F1-44E1-9A37-328FAB14D2CE}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A51DCA17-E8F1-44E1-9A37-328FAB14D2CE}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal