Add association tests for new schema

spec/models/group_score_spec.rb

@@ -5,5 +5,7 @@ require 'rails_helper'
 RSpec.describe GroupScore, type: :model do
   describe 'association' do
     it { should belong_to :team }
+    it { should belong_to :group }
+
   end
 end

spec/models/team_spec.rb

@@ -9,6 +9,8 @@ RSpec.describe Team, type: :model do
 
   describe 'association' do
     it { should belong_to :tournament }
-    it { should have_one :group_score }
+    it { should have_many :group_score }
+    it { should have_many :scores }
+
   end
 end