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module Shoulda # :nodoc:
module Matchers
module ActiveModel # :nodoc:
# Ensure that the attribute's value is in the range specified
#
# Options:
# * <tt>in_array</tt> - the array of allowed values for this attribute
# * <tt>in_range</tt> - the range of allowed values for this attribute
# * <tt>with_low_message</tt> - value the test expects to find in
# <tt>errors.on(:attribute)</tt>. Regexp or string. Defaults to the
# translation for :inclusion.
# * <tt>with_high_message</tt> - value the test expects to find in
# <tt>errors.on(:attribute)</tt>. Regexp or string. Defaults to the
# translation for :inclusion.
#
# Example:
# it { should ensure_inclusion_of(:age).in_range(0..100) }
#
def ensure_inclusion_of(attr)
EnsureInclusionOfMatcher.new(attr)
end
class EnsureInclusionOfMatcher < ValidationMatcher # :nodoc:
def initialize(attribute)
super(attribute)
@options = {}
end
def in_array(array)
@array = array
self
end
def in_range(range)
@range = range
@minimum = range.first
@maximum = range.last
self
end
def allow_blank(allow_blank = true)
@options[:allow_blank] = allow_blank
self
end
def allow_nil(allow_nil = true)
@options[:allow_nil] = allow_nil
self
end
def with_message(message)
if message
@low_message = message
@high_message = message
end
self
end
def with_low_message(message)
@low_message = message if message
self
end
def with_high_message(message)
@high_message = message if message
self
end
def description
"ensure inclusion of #{@attribute} in #{inspect_message}"
end
def matches?(subject)
super(subject)
if @range
@low_message ||= :inclusion
@high_message ||= :inclusion
disallows_lower_value &&
allows_minimum_value &&
disallows_higher_value &&
allows_maximum_value
elsif @array
if allows_all_values_in_array? && allows_blank_value? && allows_nil_value?
true
else
@failure_message = "#{@array} doesn't match array in validation"
false
end
end
end
private
def allows_blank_value?
if @options.key?(:allow_blank)
blank_values = ['', ' ', "\n", "\r", "\t", "\f"]
@options[:allow_blank] == blank_values.all? { |value| allows_value_of(value) }
else
true
end
end
def allows_nil_value?
if @options.key?(:allow_nil)
@options[:allow_nil] == allows_value_of(nil)
else
true
end
end
def inspect_message
@range.nil? ? @array.inspect : @range.inspect
end
def allows_all_values_in_array?
@array.all? do |value|
allows_value_of(value, @low_message)
end
end
def disallows_lower_value
@minimum == 0 || disallows_value_of(@minimum - 1, @low_message)
end
def disallows_higher_value
disallows_value_of(@maximum + 1, @high_message)
end
def allows_minimum_value
allows_value_of(@minimum, @low_message)
end
def allows_maximum_value
allows_value_of(@maximum, @high_message)
end
end
end
end
end
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