testRule.register(1);

        List<Rule> rules = ruleManager.getRules();
        assertEquals(3, rules.size());
        assertEquals("rule1", rules.get(0).getRuleId());
        assertEquals("middle", rules.get(1).getRuleId());
        assertEquals("rule2", rules.get(2).getRuleId());
    }

    /**
     * Test register method with last index
     */
    public void test_register_lastIndex() {

        for (int i = 0; i < createdComponents.size(); i++) {
            for (int j = i + 1; j < createdComponents.size(); j++) {
                assertNotSame(createdComponents.get(i), createdComponents.get(j));
            }
        }
    }

    /**
     * Test concurrent destroy operations
     */
    public void test_concurrentDestroy() throws Exception {

import org.opensearch.action.admin.indices.mapping.get.GetMappingsResponse;
import org.opensearch.action.admin.indices.refresh.RefreshResponse;
import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.delete.DeleteResponse;
import org.opensearch.action.get.GetResponse;
import org.opensearch.action.index.IndexResponse;

                final String contentType = params == null ? null : params.get(ExtractData.CONTENT_TYPE);
                String contentEncoding = params == null ? null : params.get(ExtractData.CONTENT_ENCODING);
                final boolean normalizeText = params == null ? true : !Constants.FALSE.equalsIgnoreCase(params.get(NORMALIZE_TEXT));

        for (final String field : fields) {
            final Object textObj = document.get(field);
            if (textObj == null) {
                continue;
            }
            final String text = textObj.toString();
            final String lang = document.get(langFieldName) == null ? null : document.get(langFieldName).toString();

                    target.setMethod(getFieldValue(fields.get("method"), String.class));
                    target.setMimeType(getFieldValue(fields.get("mimeType"), String.class));
                    target.setSessionId(getFieldValue(fields.get("sessionId"), String.class));
                    target.setUrl(getFieldValue(fields.get("url"), String.class));

        this.settings = settings;
        this.indexName = indexName;
        supportedFields = settings.array().get(SuggestSettings.DefaultKeys.SUPPORTED_FIELDS);
        totalDocNum = getTotal();
    }

    @Override
    public synchronized Map<String, Object> read() {
        while (!isFinished.get() && queue.isEmpty()) {
            addDocumentToQueue();
        }

        return queue.poll();
    }

            String[] alphabets;
            if (i + 1 < text.length() && convertMap.get(text.substring(i, i + 2)) != null) {
                alphabets = convertMap.get(text.substring(i, i + 2));
                i += 2;
            } else {
                if (convertMap.get(text.substring(i, i + 1)) != null) {
                    alphabets = convertMap.get(text.substring(i, i + 1));
                } else {

        assertEquals("value1", builder.initialSettings.get("key1"));

        // Test adding multiple settings
        builder.addInitialSettings("key2", 100);
        builder.addInitialSettings("key3", true);
        assertEquals(3, builder.initialSettings.size());
        assertEquals("value1", builder.initialSettings.get("key1"));
        assertEquals(100, builder.initialSettings.get("key2"));

        assertEquals("Hello", tokens.get(0).getTerm());
        assertEquals("world", tokens.get(1).getTerm());
        assertEquals("How", tokens.get(2).getTerm());
        assertEquals("are", tokens.get(3).getTerm());
        assertEquals("you", tokens.get(4).getTerm());
        assertEquals("I", tokens.get(5).getTerm());
        assertEquals("m", tokens.get(6).getTerm());