var casper = require('casper').create();
var x = require('casper').selectXPath;
var fields = {}

casper.start('https://www.google.fr/maps/');

casper.then(function() {
  fields['//*[@id="searchboxinput"]'] = '36 Quai des Orfèvres 75001 Paris'
  casper.test.assertExists(x('.//form[@name="searchbox_form"]'));
  this.fillXPath('form[name="searchbox_form"]', fields, false);
});

casper.run();