Named argument wrappers for unit test frameworks to disambiguate between which argument of type 'a is expected and which actual as there's no consistent ordering between libraries, and even within them (e.g. Expecto and Expecto.Flip).

A core type

namespace AltCode.Test.[Expecto|NUnit|Xunit]

type AssertionMatch<'a> =
  {
    Actual : 'a
    Expected : 'a
  }
  static member Create() =
    {
      Actual = Unchecked.defaultof<'a>
      Expected = Unchecked.defaultof<'a>
    }
  member this.WithActual e = { this with Actual = e }
  member this.WithExpected e = { this with Expected = e }

providing a F# and C#-friendly API for naming arguments

AltCode.Test.Expecto

Contains module AltCode.Test.Expecto.AltExpect which provides wrappers for Expecto.Expect and AltCode.Test.Expecto.AltFlipExpect for Expecto.Flip.Expect with an appropriate AltCode.Test.Expecto.AssertionMatch-typed argument in place of actual and template expectation

AltCode.Test.Xunit

Contains class AltCode.Test.Xunit.AltAssert which provides wrappers for Xunit.Assert with an appropriate AltCode.Test.Xunit.AssertionMatch-typed argument in place of actual and template expectation

AltCode.Test.NUnit

Contains classes AltCode.Test.NUnit.Alt*Assert which provide emulators for the corresponding NUnit.Framework.Legacy.*Assert for * = 'Classic' (just AltAssert, not AltClassicAssert), 'Collection', 'Directory', 'File' and 'String' types with an appropriate AltCode.Test.Nunit.AssertionMatch-typed argument in place of actual and template expectation; also

type Constraint<'a> =
  {
    Actual : 'a
    Constraint : NUnit.Framework.Constraints.IResolveConstraint
  }
  static member Create() =
    {
      Actual = Unchecked.defaultof<'a>
      Constraint = null
    }
  member this.WithActual e = { this with Actual = e }
  member this.WithConstraint e = { this with Constraint = e }

and wrappers for NUnit.Framework.Assert.That overloads

  static member That(x: Constraint<'a>)
  static member That(x: Constraint<'a>, message: string)

Build	GitHub
Coverage	Coveralls

Cross platform, dotnet code throughout.

It is assumed that .net 8.0.100 or later is available (dotnet) -- try https://www.microsoft.com/net/download

Start by setting up with dotnet tool restore Then dotnet run --project ./Build/Setup.fsproj to do the rest of the set-up.

Running dotnet run --project ./Build/Build.fsproj performs a full build/package process.

Use dotnet run --project ./Build/Build.fsproj --target <targetname> to run to a specific target.

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