@Test
    void testInvalidUcaStrength() {
        assertQueryError(
                "?query=test&sortspec=-uca(name,en_US,tertary)",
                "Could not set 'ranking.sorting' to '-uca(name,en_US,tertary)': Unknown collation strength: 'tertary'");
    }
Test that the integer convenience wrapper works as documented,
throwing NumberFormatException when applied to something that
is not a number.
container-search/src/test/java/com/yahoo/prelude/test/QueryTestCase.java