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A test is a procedure used to determine that a system operates as intended. A test might be actual operation of a system, or the simulation of system operation. All tests involve some form of physical check or manipulation of the system.
There is a main rule for testing - "Test it as close to the way it has to work in an emergency as you can".
A test is meant to be "hands-on", to the extent the component or system can be manipulated safely.
© Hughes Associates,Inc. 2012