@Test
public void testGetPos() throws Exception {

  Path seekTestFilePath = new Path(this.testRootDir + "/" +
      "seekTestFile");
  long fileSize = 5 * Unit.MB;
  ContractTestUtils.generateTestFile(
      this.fs, seekTestFilePath, fileSize, 256, 255);
  LOG.info("5MB file for getPos test has created.");
  FSDataInputStream inputStream = this.fs.open(seekTestFilePath);
  Random random = new Random();
  long pos = Math.abs(random.nextLong()) % fileSize;
  inputStream.seek(pos);
  assertTrue("expected position at: " +
          pos + ", but got: " + inputStream.getPos(),
      inputStream.getPos() == pos);
  LOG.info("completed get pos tests.");
}