class_docstr: Test DRL model
code: def test_init(self):
      model = DRL()
      state_dict = model.clip.state_dict()
      # 77
      context_length = state_dict["positional_embedding"].shape[0]
      self.assertTrue(context_length == 77)
  
imports: import unittest
  from types import SimpleNamespace
  from towhee.models.drl.module_cross import CrossModel
  from towhee.models.drl.drl import DRL
label_desc: Use image node_id 1 for calling the TestDRL obj's underlying member method code with example usage: obj.test_init() without return types