class_docstr: Class implements base tests for binary headers
  
  It serves as a base class for other binary header tests
class_docstr_tok: ["Class","implements","base","tests","for","binary","headers","It","serves","as","a","base","class","for","other","binary","header","tests"]
code: def log_chk(self, hdr, level):
      return log_chk(hdr, level)
  
imports: import logging
  from io import BytesIO, StringIO
  import numpy
  import pytest
  from numpy.testing import assert_array_equal
  from ..None import imageglobals
  from ..batteryrunners import Report
  from ..casting import sctypes
  from ..spatialimages import HeaderDataError
  from ..volumeutils import Recoder, native_code, swapped_code
  from ..wrapstruct import LabeledWrapStruct, WrapStruct, WrapStructError
label_desc: Use image node_id 11 for calling the _TestWrapStructBase obj's underlying member method code with example usage: obj.log_chk(hdr, level) and returns: log_chk