Recovery testing, a type of non-functional testing, ascertains whether the software can bounce back from failures such hardware/software crashes or any network issues.
Switch off the WiFi connection while data is downloading on your system, then turn it back on later to see if the data is still being downloaded or if it has lost any progress.
Restart the system and let the browser operate in many sessions. Verify that all of the sessions were reloaded when the system has been restarted.
Unplug the cable while the application is getting data from the network to fail the scenario. After some time, reconnect the cable and check to see if any data has been recovered and if the program is still receiving data from the location where the connection was lost.
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