module ActiveSupport module Testing # Adds simple access to sample files called file fixtures. # File fixtures are normal files stored in # ActiveSupport::TestCase.file_fixture_path. # # 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