Refactor: extract test helper method to_json_date
Refactor: use assert_equal instead of assert, put expected on lhs, actual on rhs
Refactor: rename various variables to shorter names
Refactor: switch from a.must_equal b to assert_equal a, b
Refactor: switch from a.must_equal false to refute a
Refactor: switch from spec- to test-style tests
Refactor: make test helper functions private
Refactor: move test helper functions into re-opened class
Refactor: extract test helper #run_rss_loader
Refactor: extract test helper #get_json_from(url)
Refactor: rename #run_rss_loader to #run_rss_loader_with(rss_data)
Refactor: extract test helper #assert_data_equal(test_data, json_data)
Refactor: rename test_data_as_rss to rss_data
Refactor: rename #test_data to #parse, introduce rss_data arg
Refactor: rename vars and args rss_data to rss
Refactor: rename arg json_data to json
Refactor: rename vars and args channel_from_* to *_channel
Refactor: simplify #assert_data_equal
Refactor: fix code indentation
Refactor: rename items_from_rss to rss_items