diff --git a/Craftimizer.Test/Craftimizer.Test.csproj b/Craftimizer.Test/Craftimizer.Test.csproj
new file mode 100644
index 0000000..5344fb4
--- /dev/null
+++ b/Craftimizer.Test/Craftimizer.Test.csproj
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.5.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.10" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.10" />
+    <PackageReference Include="coverlet.collector" Version="3.2.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Simulator\Craftimizer.Simulator.csproj" />
+    <ProjectReference Include="..\Solver\Craftimizer.Solver.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/Craftimizer.Test/Solver/ActionSet.cs b/Craftimizer.Test/Solver/ActionSet.cs
new file mode 100644
index 0000000..27061a0
--- /dev/null
+++ b/Craftimizer.Test/Solver/ActionSet.cs
@@ -0,0 +1,104 @@
+using Craftimizer.Simulator.Actions;
+
+namespace Craftimizer.Test.Solver;
+
+[TestClass]
+public class ActionSetTests
+{
+    [TestMethod]
+    public void TestAcceptedActions()
+    {
+        var actions = Craftimizer.Solver.Simulator.AcceptedActions;
+        var lut = Craftimizer.Solver.Simulator.AcceptedActionsLUT;
+
+        Assert.IsTrue(actions.Length <= 32);
+        foreach(var i in Enum.GetValues<ActionType>())
+        {
+            var idx = lut[(byte)i];
+            if (idx != 0)
+                Assert.AreEqual(i, actions[idx]);
+        }
+    }
+
+    [TestMethod]
+    public void TestSize()
+    {
+        var set = new ActionSet();
+        Assert.IsTrue(set.IsEmpty);
+        Assert.AreEqual(0, set.Count);
+
+        set.AddAction(ActionType.BasicSynthesis);
+        set.AddAction(ActionType.WasteNot2);
+        
+        Assert.AreEqual(2, set.Count);
+        Assert.IsFalse(set.IsEmpty);
+
+        set.RemoveAction(ActionType.BasicSynthesis);
+        set.RemoveAction(ActionType.WasteNot2);
+
+        Assert.IsTrue(set.IsEmpty);
+        Assert.AreEqual(0, set.Count);
+    }
+
+    [TestMethod]
+    public void TestAddRemove()
+    {
+        var set = new ActionSet();
+
+        Assert.IsTrue(set.AddAction(ActionType.BasicSynthesis));
+        Assert.IsFalse(set.AddAction(ActionType.BasicSynthesis));
+
+        Assert.IsTrue(set.RemoveAction(ActionType.BasicSynthesis));
+        Assert.IsFalse(set.RemoveAction(ActionType.BasicSynthesis));
+        
+        Assert.IsTrue(set.AddAction(ActionType.BasicSynthesis));
+        Assert.IsTrue(set.AddAction(ActionType.WasteNot2));
+
+        Assert.IsTrue(set.RemoveAction(ActionType.BasicSynthesis));
+        Assert.IsTrue(set.RemoveAction(ActionType.WasteNot2));
+    }
+
+    [TestMethod]
+    public void TestHasAction()
+    {
+        var set = new ActionSet();
+
+        set.AddAction(ActionType.BasicSynthesis);
+
+        Assert.IsTrue(set.HasAction(ActionType.BasicSynthesis));
+        Assert.IsFalse(set.HasAction(ActionType.WasteNot2));
+
+        set.AddAction(ActionType.WasteNot2);
+        Assert.IsTrue(set.HasAction(ActionType.BasicSynthesis));
+        Assert.IsTrue(set.HasAction(ActionType.WasteNot2));
+
+        set.RemoveAction(ActionType.BasicSynthesis);
+        Assert.IsFalse(set.HasAction(ActionType.BasicSynthesis));
+        Assert.IsTrue(set.HasAction(ActionType.WasteNot2));
+    }
+
+    [TestMethod]
+    public void TestElementAt()
+    {
+        var set = new ActionSet();
+
+        set.AddAction(ActionType.BasicSynthesis);
+        set.AddAction(ActionType.ByregotsBlessing);
+        set.AddAction(ActionType.DelicateSynthesis);
+        set.AddAction(ActionType.FocusedTouch);
+
+        Assert.AreEqual(3, set.Count);
+
+        Assert.AreEqual(ActionType.DelicateSynthesis, set.ElementAt(0));
+        Assert.AreEqual(ActionType.FocusedTouch, set.ElementAt(1));
+        Assert.AreEqual(ActionType.ByregotsBlessing, set.ElementAt(2));
+        Assert.AreEqual(ActionType.BasicSynthesis, set.ElementAt(3));
+
+        set.RemoveAction(ActionType.FocusedTouch);
+
+        Assert.AreEqual(3, set.Count);
+        Assert.AreEqual(ActionType.DelicateSynthesis, set.ElementAt(0));
+        Assert.AreEqual(ActionType.ByregotsBlessing, set.ElementAt(1));
+        Assert.AreEqual(ActionType.BasicSynthesis, set.ElementAt(2));
+    }
+}
diff --git a/Craftimizer.Test/Usings.cs b/Craftimizer.Test/Usings.cs
new file mode 100644
index 0000000..da624f8
--- /dev/null
+++ b/Craftimizer.Test/Usings.cs
@@ -0,0 +1,3 @@
+global using Microsoft.VisualStudio.TestTools.UnitTesting;
+global using Craftimizer.Solver;
+global using Craftimizer.Simulator;
diff --git a/Craftimizer.sln b/Craftimizer.sln
index 358354c..9b6d4a8 100644
--- a/Craftimizer.sln
+++ b/Craftimizer.sln
@@ -17,6 +17,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Craftimizer.Solver", "Solve
 		{172EE849-AC7E-4F2A-ACAB-EF9D065523B3} = {172EE849-AC7E-4F2A-ACAB-EF9D065523B3}
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Craftimizer.Test", "Craftimizer.Test\Craftimizer.Test.csproj", "{C3AEA981-9DA8-405C-995B-86528493891B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -57,6 +59,14 @@ Global
 		{2B0EA452-6DFC-48DB-9049-EA782E600C21}.Release|Any CPU.Build.0 = Release|Any CPU
 		{2B0EA452-6DFC-48DB-9049-EA782E600C21}.Release|x64.ActiveCfg = Release|Any CPU
 		{2B0EA452-6DFC-48DB-9049-EA782E600C21}.Release|x64.Build.0 = Release|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Debug|x64.Build.0 = Debug|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Release|x64.ActiveCfg = Release|Any CPU
+		{C3AEA981-9DA8-405C-995B-86528493891B}.Release|x64.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE