Add Tournament model spec and factory

spec/factories/tournaments.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+FactoryBot.define do
+  factory :tournament do
+    name { Faker::Dog.name }
+    description { Faker::Lorem.sentence }
+    user
+  end
+end

spec/models/team_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Team, type: :model do
+  describe 'validation' do
+    it { should validate_presence_of :name }
+  end
+
+  describe 'association' do
+    it { should belong_to :tournament }
+  end
+end

spec/models/tournament_spec.rb

@@ -0,0 +1,32 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe Tournament, type: :model do
+  before do
+    @tournament = create(:tournament)
+  end
+
+  describe 'validation' do
+    it { should validate_presence_of :name }
+    it { should validate_presence_of :code }
+    it { should validate_uniqueness_of :code }
+    it { should_not validate_presence_of :description }
+    it { should_not validate_presence_of :public }
+  end
+
+  describe 'initialization' do
+    it 'should have a code' do
+      assert_equal @tournament.code.length, 6
+    end
+    it 'should be public' do
+      assert_equal @tournament.public, true
+    end
+  end
+
+  describe 'association' do
+    it { should belong_to :user }
+    it { should have_many :teams }
+    it { should have_many :stages }
+  end
+end