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Contents
module RSpec
module Matchers
module BuiltIn
# @api private
# Provides the implementation for `be_between`.
# Not intended to be instantiated directly.
class BeBetween < BaseMatcher
def initialize(min, max)
@min, @max = min, max
inclusive
end
# @api public
# Makes the between comparison inclusive.
#
# @example
# expect(3).to be_between(2, 3).inclusive
#
# @note The matcher is inclusive by default; this simply provides
# a way to be more explicit about it.
def inclusive
@less_than_operator = :<=
@greater_than_operator = :>=
@mode = :inclusive
self
end
# @api public
# Makes the between comparison exclusive.
#
# @example
# expect(3).to be_between(2, 4).exclusive
def exclusive
@less_than_operator = :<
@greater_than_operator = :>
@mode = :exclusive
self
end
# @api private
# @return [Boolean]
def matches?(actual)
@actual = actual
comparable? && compare
rescue ArgumentError
false
end
# @api private
# @return [String]
def failure_message
"#{super}#{not_comparable_clause}"
end
# @api private
# @return [String]
def description
"be between #{description_of @min} and #{description_of @max} (#{@mode})"
end
private
def comparable?
@actual.respond_to?(@less_than_operator) && @actual.respond_to?(@greater_than_operator)
end
def not_comparable_clause
", but it does not respond to `#{@less_than_operator}` and `#{@greater_than_operator}`" unless comparable?
end
def compare
@actual.__send__(@greater_than_operator, @min) && @actual.__send__(@less_than_operator, @max)
end
end
end
end
end
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