@Override
    public void setUp() throws Exception {
        // create runner instance
        runner = new OpenSearchRunner();
        // create ES nodes
        final String clusterName = UUID.randomUUID().toString();
        runner.onBuild((number, settingsBuilder) -> {
            settingsBuilder.put("http.cors.enabled", true);
            settingsBuilder.put("discovery.type", "single-node");

  }

  public void testToString() {
    assertEquals("[]", COMMA_SPLITTER.split("").toString());
    assertEquals("[a, b, c]", COMMA_SPLITTER.split("a,b,c").toString());
    assertEquals("[yam, bam, jam, ham]", Splitter.on(", ").split("yam, bam, jam, ham").toString());
  }

  public void testCharacterSimpleSplitWithNoDelimiter() {
    String simple = "a,b,c";

        for (int i = 0; i < 1000; i++) {
            largeInput.append("key").append(i).append("=value").append(i).append("\n");
        }

        Map<String, String> result = ParameterUtil.parse(largeInput.toString());
        assertEquals(1000, result.size());
        assertEquals("value500", result.get("key500"));

        // Test createConfigParameterMap with large input
        StringBuilder configInput = new StringBuilder();

     *
     * @return The query identifier
     */
    public String getQueryId() {
        return queryId;
    }

    @Override
    public String toString() {
        return "SearchRenderData [documentItems=" + documentItems + ", facetResponse=" + facetResponse + ", appendHighlightParams="

    if (!done) {
      StringBuilder builder = new StringBuilder();
      for (StackTraceElement trace : thread.getStackTrace()) {
        builder.append("\tat ").append(trace).append('\n');
      }
      fail(builder.toString());
    }
  }

                    }
                }
            }
        } catch (final UnsupportedEncodingException e) {
            return filePath;
        }
        return buf.toString();
    }

    /**
     * Gets the character set for the given file.
     *
     * @param file the file to get the character set for
     * @return the character set
     */

        // Test unknown context
        NegotiateContextResponse unknown = Smb2NegotiateResponse.createContext(0x9999);
        assertNull(unknown);
    }

    @Test
    @DisplayName("Should generate correct toString")
    void testToString() throws Exception {
        // Given
        setPrivateField(response, "dialectRevision", 0x0311);
        setPrivateField(response, "securityMode", 0x01);

                } else {
                    contentLength = tempFile != null ? tempFile.length() : 0;
                }
                extractData.putValue("Content-Length", Long.toString(contentLength));

                final String[] names = metadata.names();
                Arrays.sort(names);
                for (final String name : names) {

    assertEquals("[yam, bam, jam, ham]", Iterators.toString(iterator));
  }

  public void testToStringWithNull() {
    Iterator<@Nullable String> iterator =
        Lists.<@Nullable String>newArrayList("hello", null, "world").iterator();
    assertEquals("[hello, null, world]", Iterators.toString(iterator));
  }

  public void testToStringEmptyIterator() {

       */
      return navigableKeySet();
    }

    @Override
    public Collection<V> values() {
      return new StandardValues();
    }

    @Override
    public String toString() {
      return standardToString();
    }

    @Override
    public Set<Entry<K, V>> entrySet() {
      return new StandardEntrySet() {
        @Override
        public Iterator<Entry<K, V>> iterator() {