// Result should be the same as input doc when ingester is null or doesn't modify
        assertSame(doc, result);
    }

    // Test ingest with exception in ingester
    @Test
    public void test_ingest_withException() {
        final TestIngestFactory factory = (TestIngestFactory) ingestFactory;
        factory.setThrowException(true);

        final Map<String, Object> doc = new HashMap<>();