public void given_no_payments_exist_for_an_id()
{
var payments = new List <Payment>();
var determineHighSpending = new DetermineHighSpending(new MockIDateTimeProvider());
var highSpendingStatuses = determineHighSpending.Compute(payments);
Assert.Empty(highSpendingStatuses);
}
public void given_two_payments_exist_for_an_id_that_trigger_high_spending()
{
var mockDateTimeProvider = new MockIDateTimeProvider();
var mockCurrentDate = mockDateTimeProvider.ToReturn(new DateTime(2020, 04, 03));
var currentDate = mockDateTimeProvider.getDateTime();
var payments = new List <Payment>
{
new Payment
{
Id = 1,
TransactionDate = currentDate,
Category = Category.Food,
Amount = 200.00m,
},
new Payment
{
Id = 1,
TransactionDate = new DateTime(2020, 03, 03),
Category = Category.Food,
Amount = 50.00m,
}
};
var determineHighSpending = new DetermineHighSpending(mockCurrentDate);
var highSpendingStatuses = determineHighSpending.Compute(payments);
var expectedHighSpendingStatus = new HighSpendingStatus {
Category = Category.Food,
Total = 150.00m
};
Assert.Single(highSpendingStatuses);
Assert.Equal(expectedHighSpendingStatus.Category, highSpendingStatuses.ElementAt(0).Category);
Assert.Equal(expectedHighSpendingStatus.Total, highSpendingStatuses.ElementAt(0).Total);
}
public void given_four_payments_with_two_different_categories_for_an_id_then_trigger_high_spending_for_both_categories()
{
var mockDateTimeProvider = new MockIDateTimeProvider();
var mockCurrentDate = mockDateTimeProvider.ToReturn(new DateTime(2020, 04, 03));
var currentDate = mockDateTimeProvider.getDateTime();
var mockDateTimeProviderTwo = new MockIDateTimeProvider();
var mockCurrentDateTwo = mockDateTimeProviderTwo.ToReturn(new DateTime(2020, 03, 03));
var previousDate = mockDateTimeProviderTwo.getDateTime();
var payments = new List <Payment>
{
new Payment
{
Id = 1,
TransactionDate = currentDate,
Category = Category.Food,
Amount = 200.00m,
},
new Payment
{
Id = 1,
TransactionDate = currentDate,
Category = Category.Transport,
Amount = 50.00m,
},
new Payment
{
Id = 1,
TransactionDate = previousDate,
Category = Category.Food,
Amount = 50.00m,
},
new Payment
{
Id = 1,
TransactionDate = previousDate,
Category = Category.Transport,
Amount = 5.00m,
}
};
var determineHighSpending = new DetermineHighSpending(mockCurrentDate);
var highSpendingStatuses = determineHighSpending.Compute(payments);
var expectedHighSpendingStatus = new List <HighSpendingStatus>
{
new HighSpendingStatus
{
Category = Category.Food,
Total = 150.00m
},
new HighSpendingStatus
{
Category = Category.Transport,
Total = 45.00m
}
};
Assert.Equal(2, highSpendingStatuses.Count);
Assert.Equal(expectedHighSpendingStatus[0].Category, highSpendingStatuses.ElementAt(0).Category);
Assert.Equal(expectedHighSpendingStatus[0].Total, highSpendingStatuses.ElementAt(0).Total);
Assert.Equal(expectedHighSpendingStatus[1].Category, highSpendingStatuses.ElementAt(1).Category);
Assert.Equal(expectedHighSpendingStatus[1].Total, highSpendingStatuses.ElementAt(1).Total);
}
public void Trigger(int id) {
var payments = PaymentsRepository.FetchPayments(id);
var highSpendingStatuses = DetermineHighSpending.Compute(payments);
SendNotification.Send(highSpendingStatuses);
}