Fix selenium test that just ended with an api request and no check.

lib/galaxy/selenium/navigates_galaxy.py

@@ -1916,6 +1916,10 @@ class NavigatesGalaxy(HasDriver):
         element = self.components._.messages["warning"]
         return self.assert_message(element, contains=contains)
 
+    def assert_success_message(self, contains=None):
+        element = self.components._.messages["done"]
+        return self.assert_message(element, contains=contains)
+
     def assert_message(self, element, contains=None):
         if contains is not None:
             if type(element) == list:

lib/galaxy_test/selenium/test_change_password.py

@@ -52,6 +52,7 @@ class TestChangePassword(SeleniumTestCase):
         self.register_and_change_password()
         password = self.default_password
         self.fill_input_fields(password, password, password)
+        self.assert_success_message(contains="Password has been changed")
 
     def register_and_change_password(self):
         self.home()