class_docstr: OSS Filesystem Tests
code: def test_seek(self):
      file_path = file_io.join(self._base_dir, "temp_file")
      with gfile.Open(file_path, mode="r+") as f:
          f.write("testing1\ntesting2\ntesting3\n\ntesting5")
      self.assertEqual("testing1\n", f.readline())
      self.assertEqual(9, f.tell())
  
      # Seek to 18
      f.seek(18)
      self.assertEqual(18, f.tell())
      self.assertEqual("testing3\n", f.readline())
  
      # Seek back to 9
      f.seek(9)
      self.assertEqual(9, f.tell())
      self.assertEqual("testing2\n", f.readline())
  
      f.seek(0)
      self.assertEqual(0, f.tell())
      self.assertEqual("testing1\n", f.readline())
  
      with self.assertRaises(errors.InvalidArgumentError):
          f.seek(-1)
  
      with self.assertRaises(TypeError):
          f.seek()
  
      with self.assertRaises(TypeError):
          f.seek(offset=0, position=0)
      f.seek(position=9)
      self.assertEqual(9, f.tell())
      self.assertEqual("testing2\n", f.readline())
  
imports: import os
  import unittest
  from tensorflow.python.framework import errors
  from tensorflow.python.lib.io import file_io
  from tensorflow.python.platform import test
  from tensorflow.python.platform import gfile
  import tensorflow
  import tensorflow_io
label_desc: Use image node_id 36 for calling the OSSFSTest obj's underlying member method code with example usage: obj.test_seek() without return types