class RSpec::Support::MethodSignatureExpectation

@api private
allowed/required keyword args of a given method.
Encapsulates expectations about the number of arguments and

def empty? 

def empty?
  @min_count.nil? &&
    @keywords.to_a.empty? &&
    !@expect_arbitrary_keywords &&
    !@expect_unlimited_arguments
end

def initialize 

def initialize
  @min_count = nil
  @max_count = nil
  @keywords  = []
  @expect_unlimited_arguments = false
  @expect_arbitrary_keywords  = false
end

def keywords=(values) 

def keywords=(values)
  @keywords = values.to_a || []
end

def max_count=(number) 

def max_count=(number)
  raise ArgumentError, 'must be a non-negative integer or nil' \
    unless number.nil? || (number.is_a?(Integer) && number >= 0)
  @max_count = number
end

def min_count=(number) 

def min_count=(number)
  raise ArgumentError, 'must be a non-negative integer or nil' \
    unless number.nil? || (number.is_a?(Integer) && number >= 0)
  @min_count = number
end