class_docstr: Test FASTQLoader
code: def setUp(self):
      super(TestFASTQLoader, self).setUp()
      self.current_dir = os.path.dirname(os.path.abspath(__file__))
  
imports: import os
  import unittest
  from deepchem.data.data_loader import FASTQLoader
label_desc: Use image node_id 1 for calling the TestFASTQLoader obj's underlying member method code with example usage: obj.setUp() without return types