class_docstr: Unit test for solver_utils. 
class_docstr_tok: ["Unit","test","for","solver_utils","."]
code: def setUp(self):
      super().setUp()
      self.model_path = self.get_temp_dir()
      self.file_name_pattern = "model.{epoch:02d}-{monitor:02f}.ckpt"
      self.specified_model_file_name = "model.09-1.00.ckpt"
  
file_path: delta/delta/utils/solver/utils/solver_utils_test.py
imports: import time
  from pathlib import Path
  import delta.compat
  from absl import logging
  from delta import utils
  from delta.utils.solver.utils import solver_utils
label_desc: Use image node_id 1 for calling the SolverUtilsTest obj's underlying member method code with example usage: obj.setUp() without return types