Catchy.SourceGenerator 0.0.1

.NET Standard 2.0 This package targets .NET Standard 2.0. The package is compatible with this framework or higher. 
dotnet add package Catchy.SourceGenerator --version 0.0.1
                    


                    

                
NuGet\Install-Package Catchy.SourceGenerator -Version 0.0.1
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="Catchy.SourceGenerator" Version="0.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Catchy.SourceGenerator" Version="0.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Catchy.SourceGenerator" />
                    


                            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 Catchy.SourceGenerator --version 0.0.1
                    


                    

                
#r "nuget: Catchy.SourceGenerator, 0.0.1"
#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 Catchy.SourceGenerator@0.0.1
#: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=Catchy.SourceGenerator&version=0.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Catchy.SourceGenerator&version=0.0.1
                    


                            Install as a Cake Tool

Catchy.SourceGenerator

NuGet License: MIT

Roslyn incremental source generator for Catchy — generates typed assertion surfaces and entry points from attributes.

dotnet add package Catchy
dotnet add package Catchy.SourceGenerator

Catchy.SourceGenerator is opt-in. Add it only when you use attribute-driven generation. Consumers who use only precompiled Catchy APIs need only Catchy.

Generate a typed assertion surface for your type

using Catchy;

[Assertable]
public class Order
{
    public int Id { get; set; }
    public decimal Total { get; set; }
    public string Status { get; set; } = "";
}

The generator emits a typed assertion surface so Assert.That(order) produces OrderAssertions with members like .HasId(...), .HasTotal(...), .HasStatus(...).

Author domain assertions with [AssertFor]

using Catchy;
using Catchy.Sdk;

[AssertFor<Order>]
public static partial class OrderAssertions
{
    [Assertion]
    public static ValueAssertions<Order> IsPaid(this ValueAssertions<Order> a,
        [CallerArgumentExpression(nameof(a))] string? expr = null)
    {
        a.Link("IsPaid", expr);
        a.Op(a => CheckOperation.Sync(
            () => a.GetValue().Status == "paid",
            () => $"Expected order to be paid but was '{a.GetValue().Status}'",
            a.IsSkipped()));
        return a;
    }
}

The generator wires the method into the fluent chain automatically.

Typed overloads with [GenerateTypedOverloads]

[GenerateTypedOverloads(typeof(int), typeof(long), typeof(decimal))]
public static ValueAssertions<int> IsPositive(this ValueAssertions<int> a, ...)
{ ... }

Generates IsPositive overloads for every listed type using textual substitution.

Pre-1.0 — API will change. Source generator architecture · Extensibility guide

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • .NETStandard 2.0

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
0.0.1 31 8/3/2026
0.0.0 33 7/30/2026