* fix broken tests

ruby/lib/jam_ruby/models/claimed_recording.rb

@@ -47,11 +47,17 @@ module JamRuby
       end
     end
 
+    def remove_non_alpha_num(token)
+      token.gsub(/[^0-9A-Za-z]/, '')
+    end
+
     private
+
     def generate_share_token
       self.share_token = loop do
         token = SecureRandom.urlsafe_base64(SHARE_TOKEN_LENGTH, false)
-        token.gsub!(/[^0-9A-Za-z]/, '').upcase!
+        token = remove_non_alpha_num(token)
+        token.upcase!
         break token unless MusicSessionHistory.exists?(share_token: token)
       end
     end

ruby/spec/jam_ruby/models/claimed_recording_spec.rb

@@ -112,4 +112,17 @@ describe ClaimedRecording do
       duplicate.errors[:recording_id].should == ['has already been taken']
     end
   end
+
+  describe "remove_non_alpha_num" do
+
+    let(:instance) { ClaimedRecording.new }
+
+    it "removes hyphen" do
+      instance.remove_non_alpha_num("abc-").should == 'abc'
+    end
+
+    it "leaves good alone" do
+      instance.remove_non_alpha_num("JDnfHsimMQ").should == 'JDnfHsimMQ'
+    end
+  end
 end