^Good for him and for the Federation, but that's not an officially recognized Bridge Officer Test result, so the rank of Commander cannot be conferred upon Data.
(Of course I'm just being facetious there, but I've met people in real life who really had such a bureaucratic mindset. Perhaps they also exist in Starfleet brass in the 24th century.)
But realistically, I think Data would need to submit to no Bridge Officer test at all, given his track record and experiences. He's more than proved he's capable in the past.
Perhaps one of the most telling differences between TNG and VOY:
TNG: Data protests his not being appointed a command. Picard reconsiders. Data does his duty well, and more than that. Data is justified.
VOY: Harry protests not being given more responsibility. Janeway doubts but lets him go. Kim does his duty reasonably well. Still, Janeway is justified.
(Of course I'm just being facetious there, but I've met people in real life who really had such a bureaucratic mindset. Perhaps they also exist in Starfleet brass in the 24th century.)
But realistically, I think Data would need to submit to no Bridge Officer test at all, given his track record and experiences. He's more than proved he's capable in the past.
Except Data is the third in command of the flagship, and has commanded both the Enterprise and the Sutherland*. Remember that in "Redemption", he asked why he had not been selected to command a ship. If he was not a bridge officer, the answer would be obvious.
Perhaps one of the most telling differences between TNG and VOY:
TNG: Data protests his not being appointed a command. Picard reconsiders. Data does his duty well, and more than that. Data is justified.
VOY: Harry protests not being given more responsibility. Janeway doubts but lets him go. Kim does his duty reasonably well. Still, Janeway is justified.