public void Properly_Update_Current_And_Previous_Car_Coordinates()
{
Location startingLocation = new Location {
Latitude = 52.069342, Longitude = -1.022140
};
Location updatedLocation = new Location {
Latitude = 52.070342, Longitude = -1.022140
};
#region Setup Car Coordinates
CarCoordinates starting = new CarCoordinates
{
CarIndex = 0,
Location = startingLocation,
TimeStamp = 1
};
CarCoordinates updated = new CarCoordinates
{
CarIndex = 0,
Location = updatedLocation,
TimeStamp = 1
};
#endregion
CarDetails testData = new CarDetails
{
CarLocationData = starting
};
Assert.IsNull(testData.PreviousCarCoordinates);
Assert.AreEqual(startingLocation.Latitude, testData.CarLocationData.Location.Latitude);
Assert.AreEqual(startingLocation.Longitude, testData.CarLocationData.Location.Longitude);
testData.UpdateCarCoordinates(updated);
Assert.IsNotNull(testData.PreviousCarCoordinates);
Assert.AreEqual(updatedLocation.Latitude, testData.CarLocationData.Location.Latitude);
Assert.AreEqual(updatedLocation.Longitude, testData.CarLocationData.Location.Longitude);
Assert.AreEqual(startingLocation.Latitude, testData.PreviousCarCoordinates.Location.Latitude);
Assert.AreEqual(startingLocation.Longitude, testData.PreviousCarCoordinates.Location.Longitude);
}
public void Calculate_Car_Speed_And_Distance_Traveled()
{
#region Setup Car Coordinates
CarCoordinates starting = new CarCoordinates
{
CarIndex = 0,
Location = new Location {
Latitude = 52.06792886633373, Longitude = -1.0238781510887842
},
TimeStamp = 1581977379142
};
CarCoordinates updated = new CarCoordinates
{
CarIndex = 0,
Location = new Location {
Latitude = 52.06786406260594, Longitude = -1.0239574561135762
},
TimeStamp = 1581977378941
};
#endregion
CarDetails testData = new CarDetails
{
CarLocationData = starting,
PreviousCarCoordinates = updated,
AverageSpeedPerLap = new Dictionary <int, double>(),
LapNumber = 1
};
testData.UpdateCarSpeed();
Assert.AreEqual(100, (int)testData.CurrentSpeed);
Assert.IsTrue(testData.AverageSpeedPerLap.ContainsKey(1));
}
/// <summary>
/// Updates the Current and Previous Coordinates of the car
/// </summary>
/// <param name="carDetails"></param>
/// <param name="currentCarCoordinates"></param>
public static void UpdateCarCoordinates(this CarDetails carDetails, CarCoordinates currentCarCoordinates)
{
carDetails.PreviousCarCoordinates = carDetails.CarLocationData;
carDetails.CarLocationData = currentCarCoordinates;
}
/// <summary>
/// Process the Car Coordinates and update cache and publish relevant Status and Events
/// </summary>
/// <param name="carCoordinatesPayload"></param>
public void Process(string carCoordinatesPayload)
{
CarCoordinates currentCarDetails = JsonConvert.DeserializeObject <CarCoordinates>(carCoordinatesPayload);
if (_allCarDetailsCache.ContainsKey(currentCarDetails.CarIndex))
{
#region Update Car Details
CarDetails currentCarInformation = _allCarDetailsCache[currentCarDetails.CarIndex];
currentCarInformation.UpdateCarCoordinates(currentCarDetails);
currentCarInformation.UpdateCarSpeed();
currentCarInformation.UpdateRank(ReorderAllCarsAndGetCurrentCarsPosition(currentCarInformation));
#endregion
#region Publish Car Speed
PublisherClient.PublishMessage("carStatus", currentCarInformation.GenerateCarStatusPayload(StatusPayloadType.Speed));
#endregion
#region Update Position Of Car if Changed
if (currentCarInformation.Rank != currentCarInformation.PreviousRank)
{
PublisherClient.PublishMessage("carStatus", currentCarInformation.GenerateCarStatusPayload(StatusPayloadType.Position));
}
#endregion
#region Update Lap
if (CarLocationProcessor.FinishedLap(currentCarInformation))
{
PublisherClient.PublishMessage("events", currentCarInformation.GenerateCarEvent(EventType.LapComplete));
currentCarInformation.PreviousLapTime = currentCarDetails.TimeStamp;
currentCarInformation.LapNumber++;
}
#endregion
}
else
{
CarDetails carDetails = new CarDetails
{
CarLocationData = currentCarDetails,
Rank = -1,
CurrentSpeed = 0,
CarIndex = currentCarDetails.CarIndex,
DistancedTraveled = 0,
PreviousRank = 0,
AverageSpeedPerLap = new Dictionary <int, double>()
{
{ 1, 0.0 }
},
LapNumber = 1,
PreviousLapTime = currentCarDetails.TimeStamp
};
_allCarDetailsCache.Add(currentCarDetails.CarIndex, carDetails);
}
}