'Test the _write_book_views() method'

def test_write_book_views(self):

    self.workbook._write_book_views()
    exp = '<bookViews><workbookView    xWindow="240"    yWindow="15"    windowWidth="16095"    windowHeight="9660"/></bookViews>'
    got = self.fh.getvalue()
    self.assertEqual(got, exp)
