code: def test_compatibility(self):
      spec = VariableSpec(shape=None)
      spec2 = VariableSpec(shape=[None, 15])
      spec3 = VariableSpec(shape=[None])
  
      self.assertTrue(spec.is_compatible_with(spec2))
      self.assertFalse(spec2.is_compatible_with(spec3))
  
      var = resource_variable_ops.ResourceVariable(
          initial_value=np.ones((3, 15), dtype=np.float32)
      )
      var2 = resource_variable_ops.ResourceVariable(
          initial_value=np.ones((3,), dtype=np.int32)
      )
  
      self.assertTrue(spec.is_compatible_with(var))
      self.assertFalse(spec2.is_compatible_with(var2))
  
      spec4 = VariableSpec(shape=None, dtype=dtypes.int32)
      spec5 = VariableSpec(shape=[None], dtype=dtypes.int32)
  
      self.assertFalse(spec.is_compatible_with(spec4))
      self.assertTrue(spec4.is_compatible_with(spec5))
      self.assertTrue(spec4.is_compatible_with(var2))
  
      tensor = constant_op.constant([1, 2, 3])
      self.assertFalse(spec4.is_compatible_with(tensor))
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.platform import test
  from tensorflow.python.util import nest
label_desc: Use image node_id 2 for calling the VariableSpecTest obj's underlying member method code with example usage: obj.test_compatibility() without return types