public SensorCost GetLastOrCreateSensorCost(string sensorId)
{
var lastSensorCost = this.SensorCosts
.OrderByDescending(sensorCost => sensorCost.Id)
.FirstOrDefault(sensorCost => sensorCost.SensorId == sensorId);
if (lastSensorCost == null)
{
lastSensorCost = new SensorCost()
{
SensorId = sensorId, Title = "$", Value = 0.0F
};
this.SensorCosts.Add(lastSensorCost);
this.SaveChanges();
}
return(lastSensorCost);
}
public async Task CreateSensorCostAsync(string title, float value)
{
//Given
var sensor = await CreateSensorAsync("*****@*****.**", "My Sensor", SensorTypes.EnergyLog);
var cost = new SensorCost()
{
Title = title, SensorId = sensor.Id, Value = value
};
//When
this.DbContext.Add(cost);
this.DbContext.SaveChanges();
var savedCost = this.DbContext.GetSensorCost(sensor.Id, cost.Id);
//Then
Assert.Equal(savedCost.Id, cost.Id);
}