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paperclip.rb
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paperclip.rb
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require 'paperclip/matchers'
module Paperclip
# =Paperclip Shoulda Macros
#
# These macros are intended for use with shoulda, and will be included into
# your tests automatically. All of the macros use the standard shoulda
# assumption that the name of the test is based on the name of the model
# you're testing (that is, UserTest is the test for the User model), and
# will load that class for testing purposes.
module Shoulda
include Matchers
# This will test whether you have defined your attachment correctly by
# checking for all the required fields exist after the definition of the
# attachment.
def should_have_attached_file name
klass = self.name.gsub(/Test$/, '').constantize
matcher = have_attached_file name
should matcher.description do
assert_accepts(matcher, klass)
end
end
# Tests for validations on the presence of the attachment.
def should_validate_attachment_presence name
klass = self.name.gsub(/Test$/, '').constantize
matcher = validate_attachment_presence name
should matcher.description do
assert_accepts(matcher, klass)
end
end
# Tests that you have content_type validations specified. There are two
# options, :valid and :invalid. Both accept an array of strings. The
# strings should be a list of content types which will pass and fail
# validation, respectively.
def should_validate_attachment_content_type name, options = {}
klass = self.name.gsub(/Test$/, '').constantize
valid = [options[:valid]].flatten
invalid = [options[:invalid]].flatten
matcher = validate_attachment_content_type(name).allowing(valid).rejecting(invalid)
should matcher.description do
assert_accepts(matcher, klass)
end
end
# Tests to ensure that you have file size validations turned on. You
# can pass the same options to this that you can to
# validate_attachment_file_size - :less_than, :greater_than, and :in.
# :less_than checks that a file is less than a certain size, :greater_than
# checks that a file is more than a certain size, and :in takes a Range or
# Array which specifies the lower and upper limits of the file size.
def should_validate_attachment_size name, options = {}
klass = self.name.gsub(/Test$/, '').constantize
min = options[:greater_than] || (options[:in] && options[:in].first) || 0
max = options[:less_than] || (options[:in] && options[:in].last) || (1.0/0)
range = (min..max)
matcher = validate_attachment_size(name).in(range)
should matcher.description do
assert_accepts(matcher, klass)
end
end
end
end
class Test::Unit::TestCase #:nodoc:
extend Paperclip::Shoulda
end