require "spec_helper"

describe MusicBrainz::Tools::Cache do
  before(:all) do
    @old_cache_path = MusicBrainz::Tools::Cache.cache_path
    @tmp_cache_path = File.join(File.dirname(__FILE__), '../../tmp/cache/tools')
  end

  after(:all) do
    MusicBrainz::Tools::Cache.cache_path = @old_cache_path
  end

  before(:each) do
    @test_response = ::StringIO.new('<?xml version="1.0" encoding="UTF-8"?>'+
      '<metadata xmlns="http://musicbrainz.org/ns/mmd-2.0#">'+
      '<artist type="Group" id="69b39eab-6577-46a4-a9f5-817839092033">'+
      '<name>Kasabian</name><sort-name>Kasabian</sort-name><country>GB</country>'+
      '<life-span><begin>1999</begin></life-span><relation-list target-type="url">'+
      '<relation type="allmusic"><target>http://allmusic.com/artist/p678134</target>'+
      '</relation><relation type="wikipedia"><target>http://en.wikipedia.org/wiki/Kasabian</target>'+
      '</relation><relation type="microblog"><target>http://twitter.com/kasabianhq</target>'+
      '</relation><relation type="BBC Music page"><target>'+
      'http://www.bbc.co.uk/music/artists/69b39eab-6577-46a4-a9f5-817839092033</target></relation>'+
      '<relation type="discogs"><target>http://www.discogs.com/artist/Kasabian</target></relation>'+
      '<relation type="social network"><target>http://www.facebook.com/kasabian</target></relation>'+
      '<relation type="IMDb"><target>http://www.imdb.com/name/nm1868442/</target></relation>'+
      '<relation type="official homepage"><target>http://www.kasabian.co.uk/</target></relation>'+
      '<relation type="myspace"><target>http://www.myspace.com/kasabian</target></relation>'+
      '<relation type="youtube"><target>http://www.youtube.com/kasabianvevo</target></relation>'+
      '<relation type="youtube"><target>http://www.youtube.com/user/KasabianTour</target></relation>'+
      '</relation-list></artist></metadata>')
  end

  context "with cache enabled" do
    it "calls get contents only once when requesting the resource twice" do
      MusicBrainz::Tools::Cache.cache_path = @tmp_cache_path
      MusicBrainz::Tools::Proxy.stub(:get_contents).and_return(@test_response)
      MusicBrainz::Tools::Proxy.should_receive(:get_contents).once
      mbid = "69b39eab-6577-46a4-a9f5-817839092033"

      File.exist?("#{@tmp_cache_path}/artist/#{mbid}?inc=url-rels").should be_false
      artist = MusicBrainz::Artist.find(mbid)
      artist.should be_a_kind_of(MusicBrainz::Artist)

      File.exist?("#{@tmp_cache_path}/artist/#{mbid}?inc=url-rels").should be_true
      artist = MusicBrainz::Artist.find(mbid)
      artist.should be_a_kind_of(MusicBrainz::Artist)

      MusicBrainz::Tools::Cache.clear_cache
    end
  end

  context "with cache disabled" do
    it "calls get contents twice when requesting the resource twice" do
      MusicBrainz::Tools::Cache.cache_path = nil
      MusicBrainz::Tools::Proxy.stub(:get_contents).and_return(@test_response)
      MusicBrainz::Tools::Proxy.should_receive(:get_contents).twice
      mbid = "69b39eab-6577-46a4-a9f5-817839092033"

      File.exist?("#{@tmp_cache_path}/artist/#{mbid}?inc=url-rels").should be_false
      artist = MusicBrainz::Artist.find(mbid)
      artist.should be_a_kind_of(MusicBrainz::Artist)

      File.exist?("#{@tmp_cache_path}/artist/#{mbid}?inc=url-rels").should be_false
      @test_response.rewind
      MusicBrainz.stub(:get_contents).and_return(@test_response)
      artist = MusicBrainz::Artist.find(mbid)
      artist.should be_a_kind_of(MusicBrainz::Artist)
    end
  end
end