feed_handler_test.rb
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require File.dirname(__FILE__) + '/../test_helper'
class FeedHandlerTest < Test::Unit::TestCase
def setup
@handler = FeedHandler.new
@container = FeedReaderBlock.create!(:box_id => 99999, :address => 'test/fixtures/files/feed.xml')
end
attr_reader :handler, :container
should 'fetch feed content' do
content = handler.fetch(container.address)
assert_match /<description>Feed content<\/description>/, content
assert_match /<title>Feed for unit tests<\/title>/, content
end
should 'parse feed content' do
content = ""
open(container.address) do |s| content = s.read end
parse = handler.parse(content)
assert_equal 'Feed for unit tests', parse.title
assert_equal 'http://localhost/feed-test', parse.link
assert_equal 'Last POST', parse.items[0].title
end
should 'process feed and populate container' do
handler.process(container)
assert_equal 'Feed for unit tests', container.feed_title
assert_equal ["Last POST", "Second POST", "First POST"], container.feed_items.map {|item| item[:title]}
end
should 'raise exception when parser nil' do
handler = FeedHandler.new
assert_raise FeedHandler::ParseError do
handler.parse(nil)
end
end
should 'raise exception when parser invalid content' do
handler = FeedHandler.new
assert_raise FeedHandler::ParseError do
handler.parse('<invalid>content</invalid>')
end
end
should 'raise exception when fetch nil' do
handler = FeedHandler.new
assert_raise FeedHandler::FetchError do
handler.fetch(nil)
end
end
should 'raise exception when fetch invalid address' do
handler = FeedHandler.new
assert_raise FeedHandler::FetchError do
handler.fetch('bli://invalid@address')
end
end
should 'save only latest N posts from feed' do
container.limit = 1
handler.process(container)
assert_equal 1, container.feed_items.size
end
should 'clear the container before processing' do
container.expects(:clear)
handler.process(container)
end
should 'finish_fetch after processing' do
container.expects(:finish_fetch)
handler.process(container)
end
end