```ruby
require 'rails_helper'

RSpec.describe Tournament, type: :model do
  describe "destroy" do
    let(:tournament) {FactoryGirl::create(:tournament_with_all)}
    let(:tournament_id) {tournament.id}
    context "when tournament with all possible children is destroyed" do
      it "destroys all participations" do
        tournament.destroy
        expect(TournamentParticipation.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all teams" do
        tournament.destroy
        expect(Team.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all locations" do
        tournament.destroy
        expect(Location.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all tournament admins" do
        tournament.destroy
        expect(TournamentAdmin.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all groups" do
        tournament.destroy
        expect(Group.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all playoff fights" do
        tournament.destroy
        expect(PlayoffFight.where(tournament_id: tournament_id)).to be_empty
      end
    end
  end
end
```

Add test for creatoin of initial admin for tournament
user
```ruby
require 'rails_helper'

RSpec.describe Tournament, type: :model do
  describe "destroy" do
    let(:tournament) {FactoryGirl::create(:tournament_with_all)}
    let(:tournament_id) {tournament.id}
    context "when tournament with all possible children is destroyed" do
      it "destroys all participations" do
        tournament.destroy
        expect(TournamentParticipation.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all teams" do
        tournament.destroy
        expect(Team.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all locations" do
        tournament.destroy
        expect(Location.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all tournament admins" do
        tournament.destroy
        expect(TournamentAdmin.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all groups" do
        tournament.destroy
        expect(Group.where(tournament_id: tournament_id)).to be_empty
      end
      it "destroys all playoff fights" do
        tournament.destroy
        expect(PlayoffFight.where(tournament_id: tournament_id)).to be_empty
      end
    end
  end

  describe "Creation" do
    let(:creator) {
      FactoryGirl::create(:user)
    }

    let(:tournament_attrs) {
      FactoryGirl::attributes_for(:tournament)
    }
    context "with creator specified" do
      it "Adds creator as an admin after the club is created" do
        tournament_attrs["creator"] = creator
        tournament = Tournament.create(tournament_attrs)
        expect(TournamentAdmin.exists?(tournament_id: tournament.id, user_id: creator.id)).to be true
      end
    end

    context "without creator specified" do
      it "Does not change admn count after the tournament is created" do
        expect {
          Tournament.create(tournament_attrs)
        }.not_to change(TournamentAdmin, :count)
      end
    end
  end
end
```
assistant