/**
   * reads a deegree WCS configuration file and performs a DescribeCoverage request Steps:
   *
   * <ul>
   *   <li>read configuration file
   *   <li>read a DescribeCoverage request object
   *   <li>perform the request
   * </ul>
   */
  public void _testDescribeCoverage() {
    try {
      WCSConfiguration configuration =
          WCSConfiguration.create(Configuration.getWCSConfigurationURL());
      WCService service = new WCService(configuration);

      Map<String, String> map = new HashMap<String, String>();
      map.put("SERVICE", "WCS");
      map.put("REQUEST", "DescribeCoverage");
      map.put("VERSION", "1.0.0");
      map.put("COVERAGE", "europe");

      // StringBuffer sb = new StringBuffer();
      // sb.append(Configuration.PROTOCOL + "://" + Configuration.HOST).append(':').append(
      // Configuration.PORT).append('/').append(Configuration.WCS_WEB_CONTEXT).append(
      // '/').append(Configuration.WCS_SERVLET).append("?service=WCS&").append(
      // "request=DescribeCoverage&version=1.0.0&coverage=europe");

      DescribeCoverage desc = DescribeCoverage.create(map);
      CoverageDescription o = (CoverageDescription) service.doService(desc);
      LOG.logInfo(Arrays.toString(o.getCoverageOfferings()));
    } catch (Exception e) {
      fail(StringTools.stackTraceToString(e));
    }
  }
 /**
  * validates the passed <tt>DescribeCoverage</tt> against the passed <tt>WCSCapabilities</tt>
  *
  * @param capabilities
  * @param request
  * @throws InvalidParameterValueException
  */
 private static void validate(WCSCapabilities capabilities, DescribeCoverage request)
     throws InvalidParameterValueException {
   String[] coverages = request.getCoverages();
   if (coverages != null) {
     ContentMetadata cm = capabilities.getContentMetadata();
     for (int i = 0; i < coverages.length; i++) {
       if (cm.getCoverageOfferingBrief(coverages[i]) == null) {
         throw new InvalidParameterValueException(
             "Coverage: " + coverages[i] + "is not known by the WCS");
       }
     }
   }
 }