Allow excluding services from live services count

Adds a front end for:
https://github.com/alphagov/notifications-api/pull/2417

> Sometimes we have to make a few services for what really is one
> service, for example GOV.UK Pay and GOV.UK Pay Direct Debit. We also
> have our own test services which aren’t included in the count of live
> services. We currently count these as one service by not including
> them in the beta partners spreadsheet.

tests/__init__.py

@@ -178,6 +178,7 @@ def service_json(
         'volume_sms': 222222,
         'volume_letter': 333333,
         'consent_to_research': True,
+        'count_as_live': True,
     }
 
 

tests/app/main/views/test_service_settings.py

@@ -99,6 +99,7 @@ def mock_get_service_settings_page_common(
 
         'Label Value Action',
         'Live Off Change',
+        'Count in list of live services Yes Change',
         'Organisation Org 1 Change',
         'Organisation type Central Change',
         'Free text message allowance 250,000 Change',
@@ -447,6 +448,65 @@ def test_switch_service_to_restricted(
     )
 
 
+@pytest.mark.parametrize('count_as_live, selected, labelled', (
+    (True, 'True', 'Yes'),
+    (False, 'False', 'No'),
+))
+def test_show_switch_service_to_count_as_live_page(
+    mocker,
+    client_request,
+    platform_admin_user,
+    mock_update_service,
+    count_as_live,
+    selected,
+    labelled,
+):
+    mocker.patch(
+        'app.models.service.Service.count_as_live',
+        create=True,
+        new_callable=PropertyMock,
+        return_value=count_as_live,
+    )
+    client_request.login(platform_admin_user)
+    page = client_request.get(
+        'main.service_switch_count_as_live',
+        service_id=SERVICE_ONE_ID,
+    )
+    assert page.select_one('[checked]')['value'] == selected
+    assert page.select_one('label[for={}]'.format(
+        page.select_one('[checked]')['id']
+    )).text.strip() == labelled
+
+
+@pytest.mark.parametrize('post_data, expected_persisted_value', (
+    ('True', True),
+    ('False', False),
+))
+def test_switch_service_to_count_as_live(
+    client_request,
+    platform_admin_user,
+    mock_update_service,
+    post_data,
+    expected_persisted_value,
+):
+    client_request.login(platform_admin_user)
+    client_request.post(
+        'main.service_switch_count_as_live',
+        service_id=SERVICE_ONE_ID,
+        _data={'enabled': post_data},
+        _expected_status=302,
+        _expected_redirect=url_for(
+            'main.service_settings',
+            service_id=SERVICE_ONE_ID,
+            _external=True,
+        )
+    )
+    mock_update_service.assert_called_with(
+        SERVICE_ONE_ID,
+        count_as_live=expected_persisted_value,
+    )
+
+
 def test_should_not_allow_duplicate_names(
         logged_in_client,
         mock_service_name_is_not_unique,