[tests] Made selenium test resilient to failures

Author: pandafy

openwisp_firmware_upgrader/tests/test_selenium.py

@@ -275,6 +275,10 @@ def test_batch_upgrade_upgrade_options(self, *args):
         self.web_driver.find_element(
             by=By.CSS_SELECTOR, value='input[name="upgrade_all"]'
         ).click()
+        try:
+            WebDriverWait(self.web_driver, 5).until(EC.url_contains('batchupgradeoperation'))
+        except TimeoutException:
+            self.fail('User was not redirected to Mass upgrade operations page')
         self.assertEqual(
             BatchUpgradeOperation.objects.filter(
                 upgrade_options={