[Bug]: xUnit code fixer drops lambda from Assert.Single

[ascott18]

Description

The lambda from the xUnit method Assert.Single<T>(IEnumerable<T> collection, Predicate<T> predicate) is dropped by the xUnit code fixer.

Expected Behavior

Assert.Single(properties, p => p.Prop == "myKey"); should become await Assert.That(properties.Where(p => p.Prop == "myKey")).HasSingleItem();.

Or, even better, an equivalent HasSingleItem overload that accepts a filter lambda is added to TUnit, allowing await Assert.That(properties).HasSingleItem(p => p.Prop == "myKey");.

Actual Behavior

Lambda was dropped entirely, leaving only await Assert.That(properties).HasSingleItem();

Steps to Reproduce

Apply xUnit code fixers against an xUnit assertion like Assert.Single(properties, p => p.Prop == "myKey");

TUnit Version

1.14.0

.NET Version

NET 10

Operating System

Windows

IDE / Test Runner

dotnet CLI (dotnet test / dotnet run)

Error Output / Stack Trace

Additional Context

No response

IDE-Specific Issue?

• I've confirmed this issue occurs when running via dotnet test or dotnet run, not just in my IDE