text: test(function () {
      var page = require('webpage').create();
  
      page.evaluate(function() {
          window.addEventListener('mousedown', function(event) {
              window.loggedEvent = window.loggedEvent || [];
              window.loggedEvent.push({clientX: event.clientX, clientY: event.clientY, shiftKey: event.shiftKey});
          }, false);
      });
  
      page.sendEvent('mousedown', 42, 217);
      var loggedEvent = page.evaluate(function() {
          return window.loggedEvent;
      });
      assert_equals(loggedEvent.length, 1);
      assert_equals(loggedEvent[0].clientX, 42);
      assert_equals(loggedEvent[0].clientY, 217);
  
      page.sendEvent('mousedown', 100, 100, 'left', page.event.modifier.shift);
      loggedEvent = page.evaluate(function() {
          return window.loggedEvent;
      });
      assert_equals(loggedEvent.length, 2);
      assert_is_true(loggedEvent[1].shiftKey);
  
  }, "mouse-down events");
  