--- /dev/null
+require File.dirname(__FILE__) + '/spec_helper'
+require File.dirname(__FILE__) + '/file_accessor'
+require 'stringio'
+
+describe "A FileAccessor" do
+ # This sequence diagram illustrates what this spec specifies.
+ #
+ # +--------------+ +----------+ +-------------+
+ # | FileAccessor | | Pathname | | IoProcessor |
+ # +--------------+ +----------+ +-------------+
+ # | | |
+ # open_and_handle_with | | |
+ # -------------------->| | open | |
+ # | |--------------->| | |
+ # | | io | | |
+ # | |<...............| | |
+ # | | | process(io) |
+ # | |---------------------------------->| |
+ # | | | | |
+ # | |<..................................| |
+ # | | |
+ #
+ it "should open a file and pass it to the processor's process method" do
+ # This is the primary actor
+ accessor = FileAccessor.new
+
+ # These are the primary actor's neighbours, which we mock.
+ file = mock "Pathname"
+ io_processor = mock "IoProcessor"
+
+ io = StringIO.new "whatever"
+ file.should_receive(:open).and_yield io
+ io_processor.should_receive(:process).with(io)
+
+ accessor.open_and_handle_with(file, io_processor)
+ end
+
+end