public void TryingToTakeAnItemWhenTheCollectionIsEmptyReturnsFalse()
{
// arrange
var sut = new PriorityCollection <IPriorityItem>();
IPriorityItem retrievedItem;
// act
var result = sut.TryTake(out retrievedItem);
// assert
result.Should().BeFalse();
retrievedItem.Should().BeNull();
}
public void TakingAnItemFromTheCollectionCorrectlyDetachesItsEvent()
{
// arrange
var itemDummy = PriorityItemHelper.CreatePriorityMock(1);
var sut = new PriorityCollection <IPriorityItem>();
sut.TryAdd(itemDummy.Object);
IPriorityItem item;
sut.TryTake(out item);
// act
itemDummy.Raise(t => t.PriorityChanged += null, new EventArgs());
// assert
sut.Count.Should().Be(0);
}
public void TakingAnItemFromTheCollectionAlwaysReturnsTheItemWithTheHighestPriority()
{
// arrange
var itemDummy = PriorityItemHelper.CreatePriorityMock(1);
var higherPriorityDummy = PriorityItemHelper.CreatePriorityMock(0);
var sut = new PriorityCollection <IPriorityItem>();
sut.TryAdd(itemDummy.Object);
sut.TryAdd(higherPriorityDummy.Object);
IPriorityItem retrievedItem;
// act
var result = sut.TryTake(out retrievedItem);
// assert
result.Should().BeTrue();
retrievedItem.Should().Be(higherPriorityDummy.Object);
}
