docstr: Batch dims have to be the same or 1.
docstr_tok: ["Batch","dims","have","to","be","the","same","or","1","."]
code: def test_initialize_materials_broadcast_fail(self):
      """
      Batch dims have to be the same or 1.
      """
      with self.assertRaises(ValueError):
          Materials(
              ambient_color=torch.randn(10, 3),
              diffuse_color=torch.randn(15, 3),
          )
  
file_path: pytorch3d/tests/test_materials.py
imports: import unittest
  import torch
  from pytorch3d.renderer.materials import Materials
  from .common_testing import TestCaseMixin
label_desc: Use image node_id 4 for calling the TestMaterials obj's underlying member method code with example usage: obj.test_initialize_materials_broadcast_fail() without return types