public void Cell_default_constructor_should_create_valid_instance()
{
var cell = new PrimitiveCell(123.0m);
}
public void Cell_composite_constructor_should_create_valid_instance()
{
var lhs = new PrimitiveCell(12.0m);
var rhs = new PrimitiveCell(23.0m);
var cell = new ComputedCell(lhs, Operator.Add, rhs);
}
