'Test the _write_hyperlink() method'

def test_write_hyperlink_internal_2(self):

    self.worksheet._write_hyperlink_internal(4, 0, "'Data    Sheet'!D5", "'Data    Sheet'!D5")
    exp = '<hyperlink    ref="A5"    location="\'Data    Sheet\'!D5"    display="\'Data    Sheet\'!D5"/>'
    got = self.fh.getvalue()
    self.assertEqual(got, exp)
