Merge remote-tracking branch 'danbee/feature/find-release-by-discid' …

…into feature/find-release-by-discid

lib/musicbrainz.rb

@@ -24,6 +24,7 @@
 require "musicbrainz/bindings/artist"
 require "musicbrainz/bindings/artist_search"
 require "musicbrainz/bindings/artist_release_groups"
+require "musicbrainz/bindings/discid_releases"
 require "musicbrainz/bindings/relations"
 require "musicbrainz/bindings/release_group"
 require "musicbrainz/bindings/release_group_search"

lib/musicbrainz/bindings/discid_releases.rb

@@ -0,0 +1,13 @@
+module MusicBrainz
+  module Bindings
+    module DiscidReleases
+      def parse(xml)
+        xml.xpath('./disc/release-list/release').map do |xml|
+          MusicBrainz::Bindings::Release.parse(xml)
+        end
+      end
+
+      extend self
+    end
+  end
+end

lib/musicbrainz/models/release.rb

@@ -10,7 +10,7 @@ class Release < BaseModel
     field :asin, String
     field :barcode, String
     field :quality, String
-    
+
     def tracks
       @tracks ||= client.load(:release, { id: id, inc: [:recordings, :media], limit: 100 }, {
         binding: :release_tracks,
@@ -26,6 +26,13 @@ def find(id)
           create_model: :release
         })
       end
+
+      def find_by_discid(id)
+        client.load(:discid, { id: id }, {
+          binding: :discid_releases,
+          create_models: :release
+        })
+      end
     end
   end
 end

spec/models/release_spec.rb

@@ -35,4 +35,12 @@
     expect(tracks.first.title).to eq "Empire"
     expect(tracks.first.length).to eq 233013
   end
+
+  it "gets a list of matching releases for a discid" do
+    releases = MusicBrainz::Release.find_by_discid("pmzhT6ZlFiwSRCdVwV0eqire5_Y-")
+    releases.length.should == 2
+    releases.first.id.should == "7a31cd5f-6a57-4fca-a731-c521df1d3b78"
+    releases.first.title.should == "Kveikur"
+    releases.first.asin.should == "B00C1GBOU6"
+  end
 end