public void RemoveItemTest()
{
InventoryService target = new InventoryService();
Assert.AreEqual(target.ItemCount, 0);
// add new items to inventory
string label = "Reagent1";
DateTime expiration = new DateTime(2020, 12, 31);
InventoryItemType type = InventoryItemType.Liquid;
target.AddItem(label, expiration, type);
Assert.AreEqual(target.ItemCount, 1);
string label2 = "Reagent2";
DateTime expiration2 = new DateTime(2023, 12, 31);
InventoryItemType type2 = InventoryItemType.Gas;
target.AddItem(label2, expiration2, type2);
Assert.AreEqual(target.ItemCount, 2);
// try removing item not in the inventory
string label3 = "Reagent3";
InventoryError error = target.RemoveItem(label3);
Assert.AreEqual(error.ErrorCode, ErrorCode.LabelNotFoundError);
Assert.AreEqual(target.ItemCount, 2);
// try removing existing item from inventory
error = target.RemoveItem(label2);
Assert.AreEqual(error.ErrorCode, ErrorCode.Success);
Assert.AreEqual(target.ItemCount, 1);
InventoryItem item = target.GetItem(label2);
Assert.IsNull(item);
item = target.GetItem(label);
Assert.IsNotNull(item);
// try removing existing item from inventory
error = target.RemoveItem(label);
Assert.AreEqual(error.ErrorCode, ErrorCode.Success);
Assert.AreEqual(target.ItemCount, 0);
item = target.GetItem(label);
Assert.IsNull(item);
// try removing item from empty inventory
error = target.RemoveItem(label);
Assert.AreEqual(error.ErrorCode, ErrorCode.LabelNotFoundError);
Assert.AreEqual(target.ItemCount, 0);
}
public void AddItemTest()
{
InventoryService target = new InventoryService();
Assert.AreEqual(target.ItemCount, 0);
// try to add new item to inventory
string label = "Reagent1";
DateTime expiration = new DateTime(2020, 12, 31);
InventoryItemType type = InventoryItemType.Liquid;
InventoryError error = target.AddItem(label, expiration, type);
Assert.AreEqual(error.ErrorCode, ErrorCode.Success);
Assert.AreEqual(target.ItemCount, 1);
InventoryItem item = target.GetItem(label);
Assert.IsNotNull(item);
Assert.AreEqual(item.Label, label);
Assert.AreEqual(item.ExpirationDate, expiration);
Assert.AreEqual(item.ItemType, type);
// try to add item with existing label to inventory
DateTime expiration2 = new DateTime(2022, 12, 31);
InventoryItemType type2 = InventoryItemType.Gas;
error = target.AddItem(label, expiration2, type2);
Assert.AreEqual(error.ErrorCode, ErrorCode.ItemWithLabelExistsError);
Assert.AreEqual(target.ItemCount, 1);
// try to add new item to inventory with new label
string label3 = "Reagent3";
DateTime expiration3 = new DateTime(2023, 12, 31);
InventoryItemType type3 = InventoryItemType.Gas;
error = target.AddItem(label3, expiration3, type3);
Assert.AreEqual(error.ErrorCode, ErrorCode.Success);
Assert.AreEqual(target.ItemCount, 2);
item = target.GetItem(label3);
Assert.IsNotNull(item);
Assert.AreEqual(item.Label, label3);
Assert.AreEqual(item.ExpirationDate, expiration3);
Assert.AreEqual(item.ItemType, type3);
// Verify that no other data was overwritten in inventory
item = target.GetItem(label);
Assert.IsNotNull(item);
Assert.AreEqual(item.Label, label);
Assert.AreEqual(item.ExpirationDate, expiration);
Assert.AreEqual(item.ItemType, type);
}
public void GetItemTest()
{
InventoryService target = new InventoryService();
Assert.AreEqual(target.ItemCount, 0);
// add new item to inventory
string label = "Reagent1";
DateTime expiration = new DateTime(2020, 12, 31);
InventoryItemType type = InventoryItemType.Liquid;
InventoryError error = target.AddItem(label, expiration, type);
Assert.AreEqual(error.ErrorCode, ErrorCode.Success);
Assert.AreEqual(target.ItemCount, 1);
// get existing item
InventoryItem item = target.GetItem(label);
Assert.IsNotNull(item);
Assert.AreEqual(item.Label, label);
Assert.AreEqual(item.ExpirationDate, expiration);
Assert.AreEqual(item.ItemType, type);
// get non existing item
item = target.GetItem("Reagent2");
Assert.IsNull(item);
}
public void AddItem(string item)
{
InventoryService.AddItem(item, this);
}