Can Fluent Assertions use a string-insensitive comparison for IEnumerable?

Question

I\'ve got a pair of Lists I\'m trying to compare using Fluent Assertions. I can code up a comparison easily, but I\'d like to use Fluent Assertions so that I can get the rea

Answer 1

We could add an optional lambda expression to the Equal() method. Then, you could do something like

[TestMethod()] 
public void foo() 
{ 
   var actual = new List { "ONE", "TWO", "THREE", "FOUR" }; 
   var expected = new List { "One", "Two", "Three", "Four" }; 

  actual.Should().Equal(expected, 
    (o1, o2) => string.Compare(o1, o2, StringComparison.InvariantCultureIgnoreCase))
} 

A IComparer would also be possible, but I think the occasional exception to Equal()'s default behavior wouldn't warrant an additional custom-written class. In fact, a separate IComparer might ever obscure the intention of the test. Let me know what you guys think is the best solution, so I can add it as an issue on Codeplex for release 1.8.0.