public void TryParse_NegativeInteger()
{
var input = "-5";
var result = ValueUnit.TryParse(input, out var valueUnit);
Assert.IsTrue(result);
Assert.AreEqual(-5, valueUnit.GetResult());
}
public void TryParse_NegativeDecimal()
{
var input = "-1.3";
var result = ValueUnit.TryParse(input, out var valueUnit);
Assert.IsTrue(result);
Assert.AreEqual(-1.3, valueUnit.GetResult());
}
public async Task CreateOrMergeItemAsync(ShoppingListItem item)
{
ShoppingListItem itemOnList = await GetItemByNameAsync(item.OwnerId, item.Name);
// check if items could be merged
if (itemOnList != null && (ValueUnit.TryParse(itemOnList.Quantity, out ValueUnit onlistValue) && ValueUnit.TryParse(item.Quantity, out ValueUnit coreDataValue)))
{
// merge items
ValueUnit newValueUnit = ValueUnit.Add(onlistValue, coreDataValue);
itemOnList.Quantity = newValueUnit.ToString();
}
else
{
// create new item
_context.ShoppingListItems.Add(item);
}
await _context.SaveChangesAsync();
}