ERROR: Assertion '(f(angle) > 0)' failed in file assert-fail3-test.scad, line 4
TRACE: called by 'assert' in file assert-fail3-test.scad, line 4
TRACE: call of 'm(angle = 270)' in file assert-fail3-test.scad, line 3
TRACE: called by 'm' in file assert-fail3-test.scad, line 7
