Add a tour screen once a broadcast is approved

For a training broadcast the user doesn’t get that immediate feedback
that something has happened, like they would with a real alert, or even
sending themselves a text message.

This commit adds another tour-style page which will interrupt their
journey and hopefully reinforce the message we’ve given them earlier in
the tour.

We’re adding this because we’ve found in research that users don’t have
a good grasp of the consequences and severity of emergency alerts,
versus regular text messages.

tests/app/main/views/test_broadcast.py

@@ -140,6 +140,7 @@ def test_broadcast_pages_403_for_user_without_permission(
     (3, 'Continue', partial(url_for, '.broadcast_tour', step_index=4)),
     (4, 'Continue', partial(url_for, '.broadcast_tour', step_index=5)),
     (5, 'Continue to dashboard', partial(url_for, '.service_dashboard')),
+    (6, 'Continue to dashboard', partial(url_for, '.service_dashboard')),
 ))
 def test_broadcast_tour_pages_have_continue_link(
     client_request,
@@ -165,6 +166,7 @@ def test_broadcast_tour_pages_have_continue_link(
     pytest.param(3, marks=pytest.mark.xfail),
     pytest.param(4, marks=pytest.mark.xfail),
     5,
+    6,
 ))
 def test_broadcast_tour_page_4_shows_service_name(
     client_request,
@@ -182,7 +184,7 @@ def test_broadcast_tour_page_4_shows_service_name(
     )
 
 
-@pytest.mark.parametrize('step_index', (0, 6))
+@pytest.mark.parametrize('step_index', (0, 7))
 def test_broadcast_tour_page_404s_out_of_range(
     client_request,
     service_one,
@@ -1105,15 +1107,40 @@ def test_view_only_user_cant_approve_broadcast(
     assert not page.select_one('.banner a')
 
 
-@pytest.mark.parametrize('initial_status, expected_approval', (
-    ('draft', False,),
-    ('pending-approval', True),
-    ('rejected', False),
-    ('broadcasting', False),
-    ('cancelled', False),
+@pytest.mark.parametrize('trial_mode, initial_status, expected_approval, expected_redirect', (
+    (True, 'draft', False, partial(
+        url_for,
+        '.view_broadcast_message',
+        broadcast_message_id=sample_uuid,
+    )),
+    (True, 'pending-approval', True, partial(
+        url_for,
+        '.broadcast_tour',
+        step_index=6,
+    )),
+    (False, 'pending-approval', True, partial(
+        url_for,
+        '.view_broadcast_message',
+        broadcast_message_id=sample_uuid,
+    )),
+    (True, 'rejected', False, partial(
+        url_for,
+        '.view_broadcast_message',
+        broadcast_message_id=sample_uuid,
+    )),
+    (True, 'broadcasting', False, partial(
+        url_for,
+        '.view_broadcast_message',
+        broadcast_message_id=sample_uuid,
+    )),
+    (True, 'cancelled', False, partial(
+        url_for,
+        '.view_broadcast_message',
+        broadcast_message_id=sample_uuid,
+    )),
 ))
 @freeze_time('2020-02-22T22:22:22.000000')
-def test_approve_broadcast(
+def test_request_approval(
     mocker,
     client_request,
     service_one,
@@ -1123,6 +1150,8 @@ def test_approve_broadcast(
     mock_update_broadcast_message_status,
     initial_status,
     expected_approval,
+    trial_mode,
+    expected_redirect,
 ):
     mocker.patch(
         'app.broadcast_message_api_client.get_broadcast_message',
@@ -1135,16 +1164,15 @@ def test_approve_broadcast(
             status=initial_status,
         ),
     )
+    service_one['restricted'] = trial_mode
     service_one['permissions'] += ['broadcast']
 
     client_request.post(
         '.view_broadcast_message',
         service_id=SERVICE_ONE_ID,
         broadcast_message_id=fake_uuid,
-        _expected_redirect=url_for(
-            '.view_broadcast_message',
+        _expected_redirect=expected_redirect(
             service_id=SERVICE_ONE_ID,
-            broadcast_message_id=fake_uuid,
             _external=True,
         )
     )