FS.GG.Game.Harness 0.9.0

Prefix Reserved
.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package FS.GG.Game.Harness --version 0.9.0
                    


                    

                
NuGet\Install-Package FS.GG.Game.Harness -Version 0.9.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="FS.GG.Game.Harness" Version="0.9.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="FS.GG.Game.Harness" Version="0.9.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="FS.GG.Game.Harness" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add FS.GG.Game.Harness --version 0.9.0
                    


                    

                
#r "nuget: FS.GG.Game.Harness, 0.9.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package FS.GG.Game.Harness@0.9.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=FS.GG.Game.Harness&version=0.9.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=FS.GG.Game.Harness&version=0.9.0
                    


                            Install as a Cake Tool

FS.GG.Game.Harness

Deterministic, headless gameplay test harness on FS.GG.Game.Core. Drives a game's world through the standard Command input frontier, folds whole fixed steps, and fingerprints the world trace as a value — so a replay is a comparison, not a tolerance check.

Depends on nothing but FS.GG.Game.Core and the BCL — no render/input stack, no keymap type, no I/O (WI-6, Game#425). Everything below lives in the FS.GG.Game.Harness namespace.

The vocabulary

  • Trace — the provenance-carrying comparison surface. A Trace<'f> is the world's evolution fingerprinted as a value, tagged with its Origin, so two runs are compared as data rather than re-simulated and eyeballed.
  • Playable — the driven-game contract (Playable<'world,'key>) plus Bot<'view>, the in-process policy that turns a view of the world into commands. This is what a game implements to be driven by the harness.
  • Driver — the drivers that produce a Run<'f>: scripted raw-key → keymap → Command input folded over whole fixed steps, and an in-process bot policy driving the same Command frontier.
  • Matrix — the multi-seed, bot-vs-bot match matrix. Seat, MatchSetup<'world,'view> and Match<'view> set up a seeded field of matches so a policy is exercised across many seeds, not one.
  • Synthetic — the typed synthetic-state escape hatch: a labeled fallback that keeps its own evidence self-identifying, so a synthetic trace can never be mistaken for a real driven one.

Guarantees

Headlessly testable — zero Skia, zero Scene, no wall-clock. It drives only through Game.Core's device-free Command vocabulary and advances only by whole fixed steps, so identical input replays byte-identically across runs and the trace fingerprint is a stable value to diff against.

House style: .fsi is the sole public surface; net10.0; -preview channel. See FS-GG/FS.GG.Game and ADR-0022.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

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Version Downloads Last Updated
0.9.0 0 7/22/2026
0.8.0 43 7/21/2026
0.7.1 57 7/19/2026
0.7.0 57 7/19/2026
0.6.0 59 7/19/2026