Interactor + tests example

team_interactor.rb

class TeamInteractor
  def initialize(user:)
    @user = user
  end

  def create(team_params:)
    @user.teams.create team_params
  end

  def invite(team_id:, user_id:)
    TeamMember.create team_id: team_id, user_id: user_id, status: :pending
  end

  def invitations
    @user.team_members.where(status: :pending)
  end

  def accept(invitation_id:)
    TeamMember.find_by(id: invitation_id).update status: :accepted
  end
end

team_interactor_spec.rb

describe TeamInteractor do
  let!(:current_user) { RegisterInteractor.new(user_params: {
    email: 'test@example.com', password: '123456789', password_confirmation: '123456789'
  }).call }

  let!(:second_user) { RegisterInteractor.new(user_params: {
    email: 'test2@example.com', password: '123456789', password_confirmation: '123456789'
  }).call }

  let!(:example_team) {
    TeamInteractor.new(user: current_user).create team_params: { name: 'Example team', description: 'Example description' }
  }

  it 'creates an invitation' do
    interactor = described_class.new user: current_user
    invitation = interactor.invite team_id: example_team.id, user_id: second_user.id
    
    expect(invitation.user).to eq(second_user)
    expect(invitation.team).to eq(example_team)
  end

  context 'with pending invitation' do
    before(:each) do
      interactor = described_class.new user: current_user
      invitation = interactor.invite team_id: example_team.id, user_id: second_user.id
    end

    it 'returns invitations' do
      interactor = described_class.new user: second_user
      invitations = interactor.invitations
      
      expect(invitations.count).to eq(1)
      expect(invitations.first.team).to eq(example_team)
    end

    it 'accepts an invitation' do
      interactor = described_class.new user: second_user
      invitation = interactor.invitations.first
      
      expect(interactor.accept invitation_id: invitation.id).to eq(true)
    end

    it 'removes an invitation from list after accept' do
      interactor = described_class.new user: second_user
      invitation = interactor.invitations.first
      interactor.accept invitation_id: invitation.id
      
      expect(interactor.invitations.count).to eq(0)
    end
  end
end