require File.dirname(__FILE__) + '/../test_helper'

class ExternalFeedTest < ActiveSupport::TestCase

  should 'require blog' do
    e = ExternalFeed.new
    e.valid?
    assert e.errors[:blog_id]
    e.blog = create_blog
    e.valid?
    assert !e.errors[:blog_id]
  end

  should 'belong to blog' do
    blog = create_blog
    e = build(:external_feed, :blog => blog)
    assert_equal blog, e.blog
  end

  should 'not add same item twice' do
    e = create(:external_feed)
    assert e.add_item('Article title', 'http://orig.link.invalid', Time.now, 'Content for external post')
    assert !e.add_item('Article title', 'http://orig.link.invalid', Time.now, 'Content for external post')
    assert_equal 1, e.blog.posts.size
  end

  should 'do nothing when clear' do
    assert_respond_to ExternalFeed.new, :clear
  end

  should 'not limit' do
    assert_equal 0, ExternalFeed.new.limit
  end

  should 'disable external feed if fetch only once on finish fetch' do
    e = build(:external_feed, :only_once => true, :enabled => true)
    e.stubs(:save!)
    e.finish_fetch
    assert_equal false, e.enabled
  end

  should 'not disable after finish fetch if there are errors' do
    e = build(:external_feed, :only_once => true, :update_errors => 1)
    e.stubs(:save!)
    e.finish_fetch
    assert_equal true, e.enabled
  end

  should 'be enabled by default' do
    assert ExternalFeed.new.enabled
  end

  should 'add items to blog as posts' do
    handler = FeedHandler.new
    e = create(:external_feed)
    handler.process(e)
    assert_equal ["Last POST", "Second POST", "First POST"], e.blog.posts.map{|i| i.title}
  end

  should 'require address if enabled' do
    e = ExternalFeed.new(:enabled => true)
    assert !e.valid?
    assert e.errors[:address]
  end

  should 'not require address if disabled' do
    e = ExternalFeed.new(:enabled => false, :address => nil)
    e.valid?
    assert !e.errors[:address]
  end

  should 'list enabled external feeds' do
    e1 = fast_create(:external_feed, :enabled => true)
    e2 = fast_create(:external_feed, :enabled => false)
    assert_includes ExternalFeed.enabled, e1
    assert_not_includes ExternalFeed.enabled, e2
  end

  should 'have an empty error message by default' do
    assert ExternalFeed.new.error_message.blank?, 'new external feed must have empty error message'
  end

  should 'have empty fetch date by default' do
    assert_nil ExternalFeed.new.fetched_at
  end
  should 'set fetch date when finishing fetch' do
    feed = ExternalFeed.new
    feed.stubs(:save!)
    feed.finish_fetch
    assert_not_nil feed.fetched_at
  end

  should 'expire feeds after a certain period' do
    # save current time
    now = Time.now

    # Noosfero is configured to update feeds every 4 hours
    FeedUpdater.stubs(:update_interval).returns(4.hours)

    expired = fast_create(:external_feed)
    not_expired = fast_create(:external_feed)

    # 5 hours ago
    Time.stubs(:now).returns(now  - 5.hours)
    expired.finish_fetch

    # 3 hours ago
    Time.stubs(:now).returns(now - 3.hours)
    not_expired.finish_fetch

    # now one feed should be expired and the not the other
    Time.stubs(:now).returns(now)
    expired_list = ExternalFeed.expired
    assert_includes expired_list, expired
    assert_not_includes expired_list, not_expired
  end

  should 'consider recently-created instance as expired' do
    new = fast_create(:external_feed)
    assert_includes ExternalFeed.expired, new
  end

  should 'have an update errors counter' do
    assert_equal 3, ExternalFeed.new(:update_errors => 3).update_errors
  end

  should 'have 0 update errors by default' do
    assert_equal 0, ExternalFeed.new.update_errors
  end

  should 'save hour when feed was fetched' do
    external_feed = create(:external_feed)

    now = Time.parse('2009-01-23 09:35')
    Time.stubs(:now).returns(now)

    external_feed.finish_fetch
    external_feed.reload

    assert_equal 9, external_feed.fetched_at.hour
    assert_equal 35, external_feed.fetched_at.min
  end

end