Start work on recording datasets.

See #22 for discussion. The idea is to record a set of events that can be used to functionally test everything past `Shark::Agency` in the stack (i.e., middlewares).

This will probably be replaced with preference to factories before too long, though, since they give better control over every detail of an object, making unit tests more granular without having to scan for a desired series of events.

Author: faultyserver

.gitignore

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+# Data files are bound to grow very large, and there's no need to track them
+data/*

Rakefile

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+require 'rubygems'
+require 'bundler'
+Bundler.setup(:test)
+
+task :record do
+  ruby 'test/record.rb'
+end

test/record.rb

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+require 'pstore'
+
+require_relative '../agency'
+require_relative '../config/citybus'
+
+Shark::Object.configure{}
+
+STORAGE = PStore.new('data/events.log')
+# Running this task will recreate the event log from scratch
+STORAGE.transaction{ STORAGE.delete :eventlog }
+
+
+# Create an agency instance and overwrite `call` to intercept all events that
+# it receives (from ObjectManagers) and record them appropriately.
+mock_agency = Shark::Agency.new
+def mock_agency.call event
+  # Record the given event into persistant storage, along with a timestamp for
+  # remember it's position in an order of events.
+  time = Time.now
+  (STORAGE[:eventlog] ||= {})[time] = event.to_h
+  puts "Recorded #{event.topic}##{event.type} at #{time}"
+end
+
+STORAGE.transaction do
+  mock_agency.run
+  sleep(4)
+end