added testing suite

OSI-API.Test/OSI-API.Test.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net5.0</TargetFramework>
+    <RootNamespace>OSI_API.Test</RootNamespace>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="1.3.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\OSI-API\OSI-API.csproj" />
+  </ItemGroup>
+
+</Project>

OSI-API.Test/UnitTest1.cs

@@ -0,0 +1,14 @@
+using System;
+using Xunit;
+
+namespace OSI_API.Test
+{
+    public class UnitTest1
+    {
+        [Fact]
+        public void Test1()
+        {
+
+        }
+    }
+}