code: def _testBrightness(self, x_np, y_np, delta, tol=1e-6):
      with self.cached_session():
          x = _get_weak_tensor(x_np, shape=x_np.shape)
          y = image_ops.adjust_brightness(x, delta)
          y_tf = self.evaluate(y)
  
          self.assertIsInstance(y, WeakTensor)
          self.assertAllClose(y_tf, y_np, tol)
  
imports: import numpy
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework.weak_tensor import WeakTensor
  from tensorflow.python.ops import image_ops
  from tensorflow.python.ops import weak_tensor_ops
  from tensorflow.python.ops import weak_tensor_test_util
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the AdjustBrightnessTest obj's underlying member method code with example usage: obj._testBrightness(x_np, y_np, delta, tol) without return types