public void GetNullableLookupIdFromValueTest()
{
var expected = 42;
var item = CreateFakeItem();
item["MyLookup"] = new FieldLookupValue
{
LookupId = expected
};
var mapper = new ListItemWrapper(item);
var actual = mapper.GetNullableLookupId("MyLookup");
Assert.AreEqual(expected, actual);
}