message: Adding test for tf.cond with a mutable boolean pred.
diff: @@ -362,6 +362,20 @@ class CondTest(TensorFlowTestCase):
  fn2=lambda: math_ops.add(y, 23))
  self.assertEquals(z.eval(), 24)
  + def testCondModifyBoolPred(self):
  + # This test in particular used to fail only when running in GPU, hence
  + # use_gpu=True.
  + with self.test_session(use_gpu=True) as sess:
  + bool_var = variable_scope.get_variable("bool_var", dtype=dtypes.bool,
  + initializer=True)
  + cond_on_bool_var = control_flow_ops.cond(
  + pred=bool_var,
  + true_fn=lambda: state_ops.assign(bool_var, False),
  + false_fn=lambda: True)
  + sess.run(bool_var.initializer)
  + self.assertEquals(sess.run(cond_on_bool_var), False)
  + self.assertEquals(sess.run(cond_on_bool_var), True)
  +
  def testCondMissingArg1(self):
  with self.test_session():
  x = constant_op.constant(1)
  