    @Test
    public void getAmountDelta_bookings() {

        // SETUP
        double amount = 123.456;
        double amount1 = 500.00;
        double amount2 = -100.00;

        Booking booking1 = new Booking(new Date(), amount1);
        Transaction transaction1 = new Transaction("some name","some id",booking1);

        Booking booking2 = new Booking(new Date(), amount2);
        Transaction transaction2 = new Transaction("some name","some id",booking2);

        // ACT
        BankingDateInformation bankingDateInformation = new BankingDateInformation(amount, new StubbedBankTransactionSupplier(transaction1, transaction2));

        //ASSERT
        assertThat(bankingDateInformation.getAmountDelta()).isEqualTo(amount1+amount2);
    }