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QCing a repair like that is going to be a can of worms. You could count the plies and look at the orientation by grinding it back, but you don't know what fibre was used or what resin. You also now don't have fibre continuity along the length, so the failure mode is going to be different - probably now more in a delamination mode at the ends of the repair than tensile/compression. So you need to bear in mind it's not going to be the same as original.
You've got a few things on your side though. Firstly is bike frames are way over-engineered so even if it's slightly weaker than original, it's probably still strong enough. Fibres used are usually pretty crap so it probably doesn't matter what your mat was. From what I've seen of some frames when they're taken back to the composite, they're pretty thrown together and fibre continuity probably isn't too much of an issue, they're full of voids, dry fibres and resin rich areas!
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Jonny69
used bladders internally patching the holes to provide some internal pressure too with the inner patch, loads of overlap and tapered the wall thickness then used widening layers to wrap on the outside. interested to hear how you would QC a repair, test strength etc any way to tell? it feels more rigid to the touch than some of the existing areas of the frame that werent damaged.