text: // Test that dropping the config database is completely disabled via
  // mongos and via mongod, if started with --configsvr
  (function() {
      "use strict";
  
      var getConfigsvrToWriteTo = function(st) {
          if (st.configRS) {
              return st.configRS.getPrimary();
          } else {
              return st._configServers[0];
          }
      };
  
      var st = new ShardingTest({shards: 2});
      var mongos = st.s;
      var config = getConfigsvrToWriteTo(st).getDB('config');
  
      // Try to drop config db via configsvr
  
      print("1: Try to drop config database via configsvr");
      assert.eq(0, config.dropDatabase().ok);
      assert.eq("Cannot drop 'config' database if mongod started with --configsvr",
                config.dropDatabase().errmsg);
  
      // Try to drop config db via mongos
      var config = mongos.getDB("config");
  
      print("1: Try to drop config database via mongos");
      assert.eq(0, config.dropDatabase().ok);
  
      // 20 = ErrorCodes::IllegalOperation
      assert.eq(20, config.dropDatabase().code);
  
      st.stop();
  }());