A method for locally performing a well test may include receiving, at a processor, data associated with a flow of hydrocarbons directed into an output pipe via a multi-selector valve configured to couple to one or more hydrocarbon wells. The method may also include determining one or more virtual flow rates of the liquid and gas components based on the data. The method may then send a signal to a separator configured to couple to the output pipe, wherein the signal is configured to cause the separator to perform a well test for a respective well when the virtual flow rates of the liquid and gas components do not substantially match well test data associated with the respective well, wherein the well test data comprises one or more flow rates of the liquid and gas components determined during a previous well test for the respective well.