'Test the _write_custom_filters() method'

def test_write_custom_filters_2(self):

    self.worksheet._write_custom_filters([4, 3000, 0, 1, 8000])
    exp = '<customFilters    and="1"><customFilter    operator="greaterThan"    val="3000"/><customFilter    operator="lessThan"    val="8000"/></customFilters>'
    got = self.fh.getvalue()
    self.assertEqual(got, exp)
