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# frozen_string_literal: true
module ActiveSupport
module Testing
# Adds simple access to sample files called file fixtures.
# File fixtures are normal files stored in
# <tt>ActiveSupport::TestCase.file_fixture_path</tt>.
#
# File fixtures are represented as +Pathname+ objects.
# This makes it easy to extract specific information:
#
# file_fixture("example.txt").read # get the file's content
# file_fixture("example.mp3").size # get the file size
module FileFixtures
extend ActiveSupport::Concern
included do
class_attribute :file_fixture_path, instance_writer: false
end
# Returns a +Pathname+ to the fixture file named +fixture_name+.
#
# Raises +ArgumentError+ if +fixture_name+ can't be found.
def file_fixture(fixture_name)
path = Pathname.new(File.join(file_fixture_path, fixture_name))
if path.exist?
path
else
msg = "the directory '%s' does not contain a file named '%s'"
raise ArgumentError, msg % [file_fixture_path, fixture_name]
end
end
end
end
end
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