Shouldly has a few configuration options:
Allows specifying a floating point tolerance for all assertions
Default value: 0.0d
Should.Throw(Func<Task>) blocks, the timeout is a safeguard for deadlocks.
Shouldly runs the lambda without a synchronisation context, but deadlocks are still possible. Use
Should.ThrowAsync to be safe then await the returned task to prevent possible deadlocks.
Default value: 10 seconds
Types which also are IEnumerable of themselves.
An example is
Newtonsoft.Json.Linq.JToken which looks like this
class JToken : IEnumerable<JToken>.
Default value: Newtonsoft.Json.Linq.JToken