fix tests for new platform admin layout

tests/app/main/views/test_platform_admin.py

@@ -245,13 +245,13 @@ def test_should_show_archived_services_last(
     assert response.status_code == 200
     mock_get_detailed_services.assert_called_once_with({'detailed': True})
     page = BeautifulSoup(response.data.decode('utf-8'), 'html.parser')
-    rows = page.find_all('tbody')[table_index].find_all('tr')
+
-    assert len(rows)
+    table_body = page.find_all('table')[table_index].find_all('tbody')[0]
-    assert rows[0]
+    services = [service.tr for service in table_body.find_all('tbody')]
-    assert rows[1]
+    assert len(services) == 3
-    assert rows[0].td.text.strip() == 'A'
+    assert services[0].td.text.strip() == 'A'
-    assert rows[1].td.text.strip() == 'B'
+    assert services[1].td.text.strip() == 'B'
-    assert rows[2].td.text.strip() == 'C'
+    assert services[2].td.text.strip() == 'C'
 
 
 @pytest.mark.parametrize('research_mode', (True, False))
@@ -274,6 +274,8 @@ def test_shows_archived_label_instead_of_live_or_research_mode_label(
 
     assert response.status_code == 200
     page = BeautifulSoup(response.data.decode('utf-8'), 'html.parser')
-    flags = page.find_all('tbody')[0].tr.find_all('td')[1]
+
+    table_body = page.find_all('table')[0].find_all('tbody')[0]
+    service_mode = table_body.find_all('tbody')[0].find_all('tr')[1].td.text.strip()
     # get second column, which contains flags as text.
-    assert flags.text.strip() == 'archived'
+    assert service_mode == 'archived'