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module Shoulda # :nodoc:
module Matchers
module ActiveModel # :nodoc:
# Ensure that the attribute is numeric.
#
# Options:
# * <tt>with_message</tt> - value the test expects to find in
# <tt>errors.on(:attribute)</tt>. Regexp or string. Defaults to the
# translation for <tt>:not_a_number</tt>.
# * <tt>only_integer</tt> - allows only integer values
#
# Examples:
# it { should validate_numericality_of(:price) }
# it { should validate_numericality_of(:age).only_integer }
#
def validate_numericality_of(attr)
ValidateNumericalityOfMatcher.new(attr)
end
class ValidateNumericalityOfMatcher < ValidationMatcher # :nodoc:
def initialize(attribute)
super(attribute)
@options = {}
end
def only_integer
@options[:only_integer] = true
self
end
def with_message(message)
if message
@expected_message = message
end
self
end
def matches?(subject)
super(subject)
disallows_non_integers? && disallows_text?
end
def description
"only allow #{allowed_type} values for #{@attribute}"
end
private
def allowed_type
if @options[:only_integer]
"integer"
else
"numeric"
end
end
def disallows_non_integers?
if @options[:only_integer]
message = @expected_message || :not_an_integer
disallows_value_of(0.1, message)
else
true
end
end
def disallows_text?
message = @expected_message || :not_a_number
disallows_value_of('abcd', message)
end
end
end
end
end
Version data entries
21 entries across 13 versions & 3 rubygems