text: import unittest
  
  from openaerostruct.structures.failure_exact import FailureExact
  from openaerostruct.utils.testing import run_test, get_default_surfaces
  
  
  class Test(unittest.TestCase):
      def test(self):
          surface = get_default_surfaces()[0]
  
          # turn down some of these properties, so the absolute deriv error isn't magnified
          surface["E"] = 7
          surface["G"] = 3
          surface["yield"] = 0.02
  
          comp = FailureExact(surface=surface)
  
          run_test(self, comp)
  
  
  if __name__ == "__main__":
      unittest.main()
  