public static InventoryItem Find(int id)
{
SqlConnection conn = DB.Connection();
SqlDataReader rdr = null;
conn.Open();
SqlCommand cmd = new SqlCommand("SELECT * FROM inventoryItems WHERE id= @InventoryItemID;", conn);
SqlParameter inventoryItemIdParameter = new SqlParameter();
inventoryItemIdParameter.ParameterName = "@InventoryItemId";
inventoryItemIdParameter.Value = id.ToString();
cmd.Parameters.Add(inventoryItemIdParameter);
rdr = cmd.ExecuteReader();
int foundInventoryItemId = 0;
string foundInventoryItemName = null;
string foundInventoryItemDescription = null;
while(rdr.Read())
{
foundInventoryItemId = rdr.GetInt32(0);
foundInventoryItemName = rdr.GetString(1);
}
InventoryItem foundInventoryItem = new InventoryItem(foundInventoryItemName, foundInventoryItemDescription, foundInventoryItemId);
if (rdr != null) rdr.Close();
if (conn != null) conn.Close();
return foundInventoryItem;
}
public void Test_Save_AssignsIdToObject()
{
InventoryItem testInventoryItem = new InventoryItem("cat", "it's a cat");
testInventoryItem.Save();
InventoryItem foundInventoryItem = InventoryItem.Find(testInventoryItem.GetId());
Assert.Equal(testInventoryItem, foundInventoryItem);
}
public void Test_Equal_ReturnsTrueIfNamesAreTheSame()
{
//Arrange, Act
InventoryItem firstInventoryItem = new InventoryItem("cat", "it's a cat");
InventoryItem secondInventoryItem = new InventoryItem("cat", "it's a cat");
//Assert
Assert.Equal(firstInventoryItem, secondInventoryItem);
}
public void Test_DatabaseHasStuff()
{
//Arrange, Act
InventoryItem newInventoryItem = new InventoryItem("cat", "it's a cat");
newInventoryItem.Save();
int result = InventoryItem.GetAll().Count;
//Assert
Assert.Equal(1, result);
}
public void Test_DeleteOne_DeletesGivenOne()
{
InventoryItem firstInventoryItem = new InventoryItem("cat", "it's a cat");
firstInventoryItem.Save();
InventoryItem secondInventoryItem = new InventoryItem("dog", "it's a dog");
secondInventoryItem.Save();
InventoryItem thirdInventoryItem = new InventoryItem("fish", "it's a fish");
thirdInventoryItem.Save();
InventoryItem.DeleteOne("dog");
int newInventory=InventoryItem.GetAll().Count;
Assert.Equal(2, newInventory);
}
public void Test_Save_SavesToDatabase()
{
//Arrange
InventoryItem newInventoryItem = new InventoryItem("cat", "it's a cat");
//Act
newInventoryItem.Save();
List<InventoryItem> result = InventoryItem.GetAll();
List<InventoryItem> testList = new List<InventoryItem>{newInventoryItem};
//Assert
Assert.Equal(testList, result);
}
public void Test_Search_FindsIdByName()
{
InventoryItem testInventoryItem = new InventoryItem("cat", "it's a cat");
testInventoryItem.Save();
int result = InventoryItem.Search(testInventoryItem.GetName());
Assert.Equal(testInventoryItem.GetId(), result);
}
public void Test_Search_DoesntFindIdForUnused()
{
InventoryItem testInventoryItem = new InventoryItem("cat", "it's a cat");
testInventoryItem.Save();
int result = InventoryItem.Search("dog");
Assert.Equal(-1, result);
}
public static List<InventoryItem> GetAll()
{
List<InventoryItem> allInventoryItems = new List<InventoryItem>{};
SqlConnection conn = DB.Connection();
SqlDataReader rdr = null;
conn.Open();
SqlCommand cmd = new SqlCommand("Select * FROM InventoryItems;", conn);
rdr = cmd.ExecuteReader();
while(rdr.Read())
{
int inventoryItemId = rdr.GetInt32(0);
string inventoryItemName = rdr.GetString(1);
string inventoryItemDescription = rdr.GetString(2);
InventoryItem newInventoryItem = new InventoryItem(inventoryItemName, inventoryItemDescription, inventoryItemId);
allInventoryItems.Add(newInventoryItem);
}
if (rdr != null) rdr.Close();
if (conn != null) conn.Close();
return allInventoryItems;
}
