Marcus Ericsson insists there were some good points to his first day in the car as he was able to work on race starts and launches.
Ericsson covered just 55 laps on Day Two at the Sakhir circuit as Caterham's day got off to a delayed start.
It also, unfortunately for the Swedish rookie, ended early when he brought out the day's final red flag with his CT05 on fire.
"My first day of the final test in the car and it obviously didn't end as we wanted it to but we did achieve quite a lot of the plan we'd set for the day," he lamented.
"We'd had a stop/start morning but the afternoon session was going well until a technical problem just after I exited the pits after the first stint of a race simulation started a fire which forced me to stop the car on track.
"We'd started after lunch with a few runs evaluating setup options and then went onto the full race simulation which was going to plan until just after the first pitstop when the problem started and I had to pull over.
"However, we had been able to run through a lot of the procedures we'd planned for today, including race starts and launches so I'm pleased we've ticked them off."
As for the fire, Ericsson said: "The fire itself was out pretty quickly and the boys now have a lot of work ahead of them to find out what happened and get it all fixed for tomorrow."
With just two days of pre-season testing remaining, Ericsson has just one in the car in which to finish his preparations ahead of the season-opening Australian GP.
"I'd like to have had some more laps but we still have another day left and with every lap I'm learning, so I'm still as positive as I was when we arrived here and just want to get back in the car and back to work."