Regression testing will be performed after functional modification or bug is fixed. These two activities may damage at a different extent to other functions that are related to the function need to be modified or repaired…
Regression Testing Demo
The demo is shown above. Initially, we already have the Mastercard to make the payment.
Now we add the Paypal as a new mode of payment. We have to test for Mastercard at the whole trading chain to ensure the new payment mode will not impact the old payment mode.
That’s what we called the regression testing.