assertNotNull(result);
        assertTrue(result.contains("Test exception"));
        assertFalse(result.contains("docs"));
    }

    // Test query() method
    public void test_query() {
        QueryBuilder queryBuilder = QueryBuilders.matchAllQuery();
        UpdateLabelJob returnedJob = updateLabelJob.query(queryBuilder);

        assertSame(updateLabelJob, returnedJob); // Method chaining

    * It depends on the `query_extractor`, and assigns the value returned by it to the parameter `q`.
* It also declares an optional `last_query` cookie, as a `str`.
    * If the user didn't provide any query `q`, we use the last query used, which we saved to a cookie before.

## Use the dependency { #use-the-dependency }

Then we can use the dependency with: