FluentAssertions Skill

FluentAssertions provides a fluent interface for writing test assertions in C#. The Sorcha codebase uses it across 1,100+ tests with xUnit. All assertions follow the subject.Should().BeX() pattern.

Quick Start

Basic Value Assertions

// Strings
wallet.Address.Should().NotBeNullOrEmpty();
blueprint.Title.Should().Be("Purchase Order");
error.Message.Should().Contain("validation");

// Numbers
blueprint.Version.Should().Be(5);
result.Count.Should().BeGreaterThan(0).And.BeLessThan(100);