public void Update_SetsValue()
{
_systemUnderTest = new ValueTable();
_systemUnderTest.Update("a", 5);
Assert.AreEqual(5, _systemUnderTest.LookUp("a"));
}
public void Lookup_NotInTable_ReturnsZero()
{
_systemUnderTest = new ValueTable();
Assert.AreEqual(0, _systemUnderTest.LookUp("a"));
}