public Planting(Flower flower, Soil soil, Pot pot)
{
// садить только цветок без горшка в пустой горшок
Contract.Requires <ArgumentException>(flower.GetPot(DateTime.UtcNow) == null);
Contract.Requires <ArgumentException>(pot.GetFlower(DateTime.UtcNow) == null);
Contract.Ensures(pot.GetFlower(this.Date) == flower, "must be planted flower in pot on date of planting");
Contract.Ensures(flower.GetPot(this.Date) == pot, "flower must be in this pot on date of planting");
this.pot = pot;
this.soil = soil;
this.flower = flower;
pot.Events.Add(this);
flower.Events.Add(this);
Debug.WriteLine("{0} planted to {1} with {2}", flower, pot, soil);
}
public void GetFlower_BeforeDateOfPlanting_ReturnsNull()
{
// arrange
var pot = new Pot();
var flower = new Flower(new PlantSource(Plants.Hedera, SeedType.Seedling));
new Planting(flower, new Soil(""), pot);
// act
var result = pot.GetFlower(DateTime.UtcNow.AddDays(-1));
// assert
Assert.AreEqual(null, result);
}
public void GetFlower_FromPotWithFlower_ReturnsIt()
{
// arrange
var pot = new Pot();
var flower = new Flower(new PlantSource(Plants.Hedera, SeedType.Seedling));
new Planting(flower, new Soil(""), pot);
// act
var result = pot.GetFlower(DateTime.UtcNow);
// assert
Assert.AreEqual(flower, result);
}
public void GetFlower_AtMomentBetweenTwoPlantings_ReturnsFirstFlower()
{
// arrange
var pot = new Pot("small pot");
var flower1 = new Flower(new PlantSource(Plants.Hedera, SeedType.Seedling));
var flower2 = new Flower(new PlantSource(Plants.Hedera, SeedType.Seedling));
new Planting(flower1, new Soil(""), pot);
var time = DateTime.UtcNow;
// dirty fix
Thread.Sleep(1000);
pot.PullEverything();
Thread.Sleep(1000);
new Planting(flower2, new Soil(""), pot);
// act
var result = pot.GetFlower(time);
// assert
Assert.AreEqual(flower1, result);
}