code: /* LanguageTool, a natural language style checker
   * Copyright (C) 2017 Daniel Naber (http://www.danielnaber.de)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.server;
  
  import org.junit.Ignore;
  import org.junit.Test;
  import org.languagetool.Language;
  import org.languagetool.Languages;
  
  import java.io.IOException;
  import java.net.URL;
  import java.net.URLEncoder;
  import java.util.*;
  
  /**
   * Runs checks for all languages with the empty string, to 
   * measure overhead. Requires a HTTP service running on default port.
   */
  public class HTTPServerOverheadTest {
    
    @Test
    @Ignore("for interactive use only")
    public void test() throws IOException {
      HashMap<Language, Float> results = new LinkedHashMap<>();
      List<Language> languages = Languages.get();
      //List<Language> languages = Collections.singletonList(Languages.getLanguageForShortCode("ca"));
      warmup(languages);
      runLoop(results, languages);
      System.out.println("=== Results of checking empty string, i.e. overhead per request: ===");
      for (Map.Entry<Language, Float> entry : results.entrySet()) {
        System.out.printf(Locale.ENGLISH, "%.2fms %s\n", entry.getValue(), entry.getKey());
      }
    }
  
    private void warmup(List<Language> languages) throws IOException {
      for (Language lang : languages) {
        System.out.println(lang + " (warm up)...");
        for (int i = 0; i < 10; i++) {
          checkTextOnServer(lang, "");
        }
      }
    }
  
    private void runLoop(HashMap<Language, Float> results, List<Language> languages) throws IOException {
      for (Language lang : languages) {
        System.out.println(lang + "...");
        int runs = 30;
        long times = 0;
        for (int i = 0; i < runs; i++) {
          long startTime = System.currentTimeMillis();
          checkTextOnServer(lang, "");
          times += System.currentTimeMillis() - startTime;
        }
        float averageTime = (float)times / (float)runs;
        results.put(lang, averageTime);
      }
    }
  
    private String checkTextOnServer(Language lang, String text) throws IOException {
      String postData = "language=" + lang.getShortCodeWithCountryAndVariant() + "&text=" + URLEncoder.encode(text, "UTF-8");
      URL url = new URL("http://localhost:" + HTTPTestTools.getDefaultPort() + "/v2/check");
      return HTTPTestTools.checkAtUrlByPost(url, postData);
    }
  
  }
  