Shouldly

Uses extension methods like .ShouldBe() for readable code, as shown in the README comparison to traditional Assert.That syntax, making tests more expressive.

Includes the tested expression in failure messages, e.g., 'contestant.Points should be 1337 but was 0', which reduces debugging time by providing immediate context.

Offers ShouldMatchApproved for snapshot testing, with optional diff visualization via the Shouldly.DiffEngine package, enhancing test validation for UI or output comparisons.

Provides a wide range of assertions for collections, strings, exceptions, and more, covering common testing scenarios without needing separate libraries.