Induction motor full load and no load test meaning
I assume by full load you are referring to what is usually known as the "locked rotor" or "blocked rotor" test.

These two tests can be used to get an estimate of motor parameters.

The locked rotor test determines the rotor resistance, and the total leakage reactance, from which stator and rotor leakage reactances can be inferred.

The no load test gives an estimate of core loss and magnetising reactance.

A good explanation is given in the book "Parameter Estimation , Condition Monitoring and Diagnosis of Electrical Machines" by Peter Vas.