code: def test_self_add(self):
      j = Variable("j", 0, 20).bind(10)
      a = ShapeTracker.from_shape((10, 10))
      x = a.reshape((10, j))
      out = x + x
      assert out == x
  
imports: import unittest
  from typing import List
  from tinygrad.helpers import prod
  from tinygrad.shape.view import View
  from tinygrad.shape.shapetracker import ShapeTracker
  from tinygrad.shape.symbolic import Variable, sym_infer
label_desc: Use image node_id 1 for calling the TestShapeTrackerAddVariable obj's underlying member method code with example usage: obj.test_self_add() without return types