# == Schema Information
#
# Table name: transactions
#
#  id           :integer          not null, primary key
#  debtor_id    :integer          not null
#  creditor_id  :integer          not null
#  issuer_id    :integer          not null
#  issuer_type  :string           not null
#  amount       :integer          default(0), not null
#  message      :string
#  created_at   :datetime         not null
#  updated_at   :datetime         not null
#  id_at_client :integer
#

describe Transaction, type: :model do
  it "has a valid factory" do
    expect(create(:transaction)).to be_valid
  end

  describe "cache" do
    before :each do
      @user = create(:user)
    end

    it "should update creditor cache" do
      trans = build(:transaction, creditor: @user, amount: 10)
      expect { trans.save! }.to change { @user.balance }.by(10)
    end

    it "should update debtor cache" do
      trans = build(:transaction, debtor: @user, amount: 10)
      expect { trans.save! }.to change { @user.balance }.by(-10)
    end
  end

  describe "amount" do
    it "should be positive" do
      expect(build :transaction, amount: -5).to_not be_valid
    end

    it "should not be 0" do
      expect(build :transaction, amount: 0).to_not be_valid
    end
  end

  describe "debtor/creditor" do
    it "should be different" do
      @user = create :user
      expect(build :transaction, debtor: @user, creditor: @user).to_not be_valid
    end
  end

  describe "client as issuer" do
    before :each do
      @transaction = create :client_transaction
    end

    it "should have a id_at_client" do
      @transaction.id_at_client = nil
      expect(@transaction).to_not be_valid
    end

    it "should have a unique id_at_client" do
      t = build :client_transaction, issuer: @transaction.issuer, id_at_client: @transaction.id_at_client
      expect(t).to_not be_valid
    end

    it "should have a unique id_at_client per client" do
      t = build :client_transaction, id_at_client: @transaction.id_at_client
      expect(t).to be_valid
    end
  end
end