Original code from openCV to create the tests that are included in their version of the descriptor. Taken from an old openCV repo.

generate_brief_tests.py

tests = int(sys.argv[1])
S = 32 # patch size
S2 = S / 2 # Clamp sample coordinates to this
sigma = S / 5.0 # Sampling geometry II
random.seed(42) # Make repeatable for simplicity

def random_coordinate():
    coord = int(round(random.gauss(0.0, sigma)))
    return min(max(coord, -S2 + 1), S2)+S2-1

for i in range(tests):
    x1 = random_coordinate();
    y1 = random_coordinate();
    x2 = random_coordinate();
    y2 = random_coordinate();
    print ’# x1,y1,x2 y2’