Enumerable

var apu = new Person { Name = "Apu" };
var homer = new Person { Name = "Homer" };
var skinner = new Person { Name = "Skinner" };
var barney = new Person { Name = "Barney" };
var theBeSharps = new List<Person> { homer, skinner, barney };
theBeSharps.ShouldBe(new[] { apu, homer, skinner, barney });

snippet source | anchor

Exception

theBeSharps
    should be
[Apu, Homer, Skinner, Barney]
    but was
[Homer, Skinner, Barney]
    difference
[*Homer*, *Skinner*, *Barney*, *]