gistfile1.py

from gaiatest import GaiaTestCase
import time

class TestRemoveApp(GaiaTestCase):
    _icons_locator = ('css selector', 'li.icon')

    def setUp(self):
        GaiaTestCase.setUp(self)
        # unlock the lockscreen if it's locked
        self.assertTrue(self.lockscreen.unlock())
        self.homescreen = self.apps.launch('Homescreen')

    def test_remove_app(self):
        icons = self.marionette.find_elements(*self._icons_locator)
        self.marionette.long_press(icons[1], 5000)
        time.sleep(5)