Add test to 'Enter key' behaviour at UNG Docs pagination

UNG Docs pagination also has an input, where user can enter the
page number he wants to go to. Test that this input also works,
by typing a number than pressing the enter key (code \13).

testUNGDocs.py

@@ -975,7 +975,7 @@ class TestUNGDocs(UNGTestMixin):
         """UNG Docs should paginate when many documents are present.
         Test that the action of paginate will work, given that many documents
         are present."""
-        #XXX this test needs an empty instance
+#        #XXX this test needs an empty instance
         test_time = int(unittest.time.time())
         page_title = "Functional UNG Test %d - Web Page " % test_time
         #add many documents to ensure that it has to paginate
@@ -988,37 +988,46 @@ class TestUNGDocs(UNGTestMixin):
             self.selenium.wait_for_page_to_load("30000")
 
         self.wait_for_activities()
-        self.selenium.open("")
+        self.open_ung_default_page(clear_cache=1, wait_for_activities=1)
         self.selenium.wait_for_page_to_load("30000")
         #assert first and last (relative) documents on first page
         self.assertEqual('1', self.selenium.get_value("//input[@name='your_listbox_page_start']"))
         self.assertTrue(self.selenium.is_text_present(page_title + '100'))
         self.assertTrue(self.selenium.is_text_present(page_title + '84'))
-        #assert first and last (relative) documents on third page
-        # (next button)
+        #NEXT BUTTON
+        # assert first and last (relative) documents on third page
         for next_page in range(2):
             self.selenium.click("//button[@name='nextPage']")
             self.selenium.wait_for_page_to_load("30000")
         self.assertEqual('3', self.selenium.get_value("//input[@name='your_listbox_page_start']"))
         self.assertTrue(self.selenium.is_text_present(page_title + '66'))
         self.assertTrue(self.selenium.is_text_present(page_title + '50'))
-        #assert first and last (relative) documents on second page
-        # (previous button)
+        #PREVIOUS BUTTON
+        # assert first and last (relative) documents on second page
         self.selenium.click("//button[@name='previousPage']")
         self.selenium.wait_for_page_to_load("30000")
         self.assertEqual('2', self.selenium.get_value("//input[@name='your_listbox_page_start']"))
         self.assertTrue(self.selenium.is_text_present(page_title + '83'))
         self.assertTrue(self.selenium.is_text_present(page_title + '67'))
-        #assert first and last (relative) documents on last page
-        # (last button)
+        #TEXT INPUT
+        # assert that entering a number at input and pressing enter will
+        # go to that page
+        self.selenium.type("//input[@name='your_listbox_page_start']", '4')
+        self.selenium.key_press("//input[@name='your_listbox_page_start']", '\\13')
+        self.selenium.wait_for_page_to_load("30000")
+        self.assertEqual('4', self.selenium.get_value("//input[@name='your_listbox_page_start']"))
+        self.assertTrue(self.selenium.is_text_present(page_title + '49'))
+        self.assertTrue(self.selenium.is_text_present(page_title + '33'))
+        #LAST BUTTON
+        # assert first and last (relative) documents on last page
         last_page_number = self.selenium.get_text("//div[@class='listbox-navigation']").split('/')[1].strip()
         self.selenium.click("//button[@name='lastPage']")
         self.selenium.wait_for_page_to_load("30000")
         self.assertEqual(last_page_number, self.selenium.get_value("//input[@name='your_listbox_page_start']"))
         self.assertTrue(self.selenium.is_text_present(page_title + '15'))
         self.assertTrue(self.selenium.is_text_present(page_title + '1'))
-        #assert first and last (relative) documents on first page
-        # (first button)
+        #FIRST BUTTON
+        # assert first and last (relative) documents on first page
         self.selenium.click("//button[@name='firstPage']")
         self.selenium.wait_for_page_to_load("30000")
         self.assertEqual('1', self.selenium.get_value("//input[@name='your_listbox_page_start']"))