Determine_the_earliest_timestamp_such_that_all_of_the_listed_bus_depart_at_offsets_matching_their_positions_in_the_list(
string notesDescription,
long expectedEarliestTimestamp)
{
// Given
var notes = NotesParser.Parse(notesDescription);
var buses = notes.Buses.ToList();
// When
var actualCommonDepartureTimestamp = buses.Cast <InServiceBus>().Select(bus => (long)bus.Id).First();
var increment = actualCommonDepartureTimestamp;
foreach (var(bus, busPosition) in buses.Skip(1).Select((bus, index) => (bus, index + 1)))
{
switch (bus)
{
case OutOfServiceBus:
continue;
case InServiceBus inServiceBus:
(actualCommonDepartureTimestamp, increment) =
BusTimestampCalculator.ComputeCommonDepartureTimestamp(
inServiceBus,
busPosition,
actualCommonDepartureTimestamp,
increment);
break;
}
}
// Then
Assert.Equal(expectedEarliestTimestamp, actualCommonDepartureTimestamp);
}
public void Determine_the_earliest_bus_id_and_the_waiting_minutes_to_take_it(
string notesDescription,
int expectedEarliestBusId,
int expectedWaitingMinutes)
{
// Given
var notes = NotesParser.Parse(notesDescription);
var departureTimestamp = notes.EarliestDepartureTimestamp;
var buses = notes.Buses;
// When
var(earliestBus, nextDepartTimestamp) = buses
.OfType <InServiceBus>()
.Select(bus => (bus, nextDepartTimestamp: bus.GetNextDepartTimestamp(departureTimestamp)))
.OrderBy(busWithNextDepart => busWithNextDepart.nextDepartTimestamp)
.First();
var actualEarliestBusId = earliestBus.Id;
var actualWaitingMinutes = nextDepartTimestamp - departureTimestamp;
// Then
Assert.Equal(expectedEarliestBusId, actualEarliestBusId);
Assert.Equal(expectedWaitingMinutes, actualWaitingMinutes);
}
