diff --git a/.travis.yml b/.travis.yml
index e627733cc..43e5ce24c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,6 +28,7 @@ script:
   - set -e
   - dotnet restore
   - dotnet build -c Release
+  - dotnet test -c Release --no-build --no-restore ArchiSteamFarm.Tests
   - dotnet publish -c Release -o out/generic
   - echo "generic" > "ArchiSteamFarm/out/generic/ArchiSteamFarm.version"
   - dotnet publish -c Release -r win-x64 -o out/win-x64
diff --git a/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj b/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj
index 201aa7a0b..4d8f121d3 100644
--- a/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj
+++ b/ArchiSteamFarm.Tests/ArchiSteamFarm.Tests.csproj
@@ -5,6 +5,7 @@
     <TargetFramework>netcoreapp2.0</TargetFramework>
     <LangVersion>latest</LangVersion>
     <ErrorReport>none</ErrorReport>
+    <RuntimeIdentifiers>win-x64;linux-x64;linux-arm;osx-x64</RuntimeIdentifiers>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
diff --git a/ArchiSteamFarm.Tests/Trading.cs b/ArchiSteamFarm.Tests/Trading.cs
index 220854d92..ea5f46b27 100644
--- a/ArchiSteamFarm.Tests/Trading.cs
+++ b/ArchiSteamFarm.Tests/Trading.cs
@@ -1,4 +1,28 @@
-using System;
+/*
+    _                _      _  ____   _                           _____
+   / \    _ __  ___ | |__  (_)/ ___| | |_  ___   __ _  _ __ ___  |  ___|__ _  _ __  _ __ ___
+  / _ \  | '__|/ __|| '_ \ | |\___ \ | __|/ _ \ / _` || '_ ` _ \ | |_  / _` || '__|| '_ ` _ \
+ / ___ \ | |  | (__ | | | || | ___) || |_|  __/| (_| || | | | | ||  _|| (_| || |   | | | | | |
+/_/   \_\|_|   \___||_| |_||_||____/  \__|\___| \__,_||_| |_| |_||_|   \__,_||_|   |_| |_| |_|
+
+ Copyright 2015-2017 Łukasz "JustArchi" Domeradzki
+ Contact: JustArchi@JustArchi.net
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+					
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+
+*/
+
+using System;
 using System.Collections.Generic;
 using System.Reflection;
 using ArchiSteamFarm.JSON;