code: def test_merge_symbolic_views(self):
      var_i = Variable("i", 1, 10)
      var_j = Variable("i", 1, 10)
      vm1 = View(
          shape=(var_i, var_j, 3),
          strides=(3, 0, 1),
          offset=0,
          mask=None,
          contiguous=False,
      )
      vm2 = View(
          shape=(var_i, var_j, 3),
          strides=(var_j * 3, 3, 1),
          offset=0,
          mask=None,
          contiguous=True,
      )
      ShapeTracker((vm1,)) + ShapeTracker((vm2,))
  
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 3 for calling the TestShapeTrackerAddVariable obj's underlying member method code with example usage: obj.test_merge_symbolic_views() without return types