ExactCountConstraint
public class ExactCountConstraint : Constraint, IEnumerableConstraint, IConstraint, IResolveConstraint
ExactCountConstraint applies another constraint to each
item in a collection, succeeding only if a specified
number of items succeed.
Construct a standalone ExactCountConstraint
Construct an ExactCountConstraint on top of an existing constraint
public ConstraintResult ApplyToEnumerable<TActual, TItem>(TActual actual, IEnumerable<TItem> enumerable)
Apply the item constraint to each item in the collection,
succeeding only if the expected number of items pass.