class_docstr: Test StringConverter
class_docstr_tok: ["Test","StringConverter"]
docstr: Check that uint64 integer types can be specified
docstr_tok: ["Check","that","uint64","integer","types","can","be","specified"]
code: def test_uint64_dtype(self):
      "Check that uint64 integer types can be specified"
      converter = StringConverter(np.uint64, default=0)
      val = "9223372043271415339"
      assert_(converter(val) == 9223372043271415339)
  
imports: import time
  from datetime import date
  import numpy
  from numpy.testing import assert_, assert_equal, assert_allclose, assert_raises
  from numpy.lib._iotools import LineSplitter, NameValidator, StringConverter, has_nested_fields, easy_dtype, flatten_dtype
label_desc: Use image node_id 10 for calling the TestStringConverter obj's underlying member method code with example usage: obj.test_uint64_dtype() without return types