code: def test_dim_args(self):
      a = dimlists()
      assert isinstance(a, DimList)
      a = dims()
      b = dimlists()
      assert isinstance(a, Dim)
      assert isinstance(b, DimList)
      assert str(a) == "a"
      a, b = dims(sizes=[3, 4])
      assert a.size == 3
      assert b.size == 4
      a = dims(sizes=[3])
      b = dimlists(sizes=[4])
      assert len(b) == 4
      a = dims()
      b = dimlists(sizes=[[4, 5]])
      assert b[0].size == 4
      assert b[1].size == 5
  
imports: from functorch.dim import Tensor, Dim, dims, dimlists, stack, DimensionBindError, DimList
  from attn_ft import BertSelfAttention, Linear
  from attn_positional import BertSelfAttention
  from torch.testing._internal.common_utils import TestCase, run_tests, TEST_CUDA
  from unittest import skip, skipIf
  import torch
  import gc
  from functorch._C import dim
  from contextlib import contextmanager
  from time import perf_counter
label_desc: Use image node_id 23 for calling the TestMin obj's underlying member method code with example usage: obj.test_dim_args() without return types