Add view for new tour start page

This will replace the current tour start page

tests/app/main/views/test_tour.py

@@ -0,0 +1,105 @@
+import pytest
+from flask import url_for
+
+from app import current_user
+from tests import validate_route_permission
+from tests.conftest import SERVICE_ONE_ID, create_template, normalize_spaces
+
+
+def test_should_200_for_tour_start(
+    client_request,
+    mock_get_service_template_with_multiple_placeholders,
+    service_one,
+    fake_uuid,
+):
+    page = client_request.get(
+        'main.begin_tour',
+        service_id=SERVICE_ONE_ID,
+        template_id=fake_uuid,
+    )
+
+    assert normalize_spaces(
+        page.select('.banner-tour .heading-medium')[0].text
+    ) == (
+        'Try sending yourself this example'
+    )
+    selected_hint = page.select('.banner-tour .govuk-grid-row')[0]
+    selected_hint_text = normalize_spaces(selected_hint.select(".govuk-body")[0].text)
+    assert "greyed-out-step" not in selected_hint["class"]
+    assert selected_hint_text == 'Every message is sent from a template'
+
+    assert normalize_spaces(
+        page.select('.sms-message-recipient')[0].text
+    ) == (
+        'To: 07700 900762'
+    )
+    assert normalize_spaces(
+        page.select('.sms-message-wrapper')[0].text
+    ) == (
+        'service one: ((one)) ((two)) ((three))'
+    )
+
+    assert page.select('a.govuk-button')[0]['href'] == url_for(
+        '.tour_step', service_id=SERVICE_ONE_ID, template_id=fake_uuid, step_index=1
+    )
+
+
+@pytest.mark.parametrize('template_type', ['email', 'letter', 'broadcast'])
+def test_should_404_if_non_sms_template_for_tour_start(
+    client_request,
+    fake_uuid,
+    mocker,
+    template_type,
+):
+    mocker.patch(
+        'app.service_api_client.get_service_template',
+        return_value={'data': create_template(template_type=template_type)}
+    )
+
+    client_request.get(
+        'main.begin_tour',
+        service_id=SERVICE_ONE_ID,
+        template_id=fake_uuid,
+        _expected_status=404,
+    )
+
+
+def test_should_404_if_no_mobile_number_for_tour_start(
+    client_request,
+    mock_get_service_template_with_multiple_placeholders,
+    service_one,
+    fake_uuid,
+    active_user_with_permissions_no_mobile
+):
+    client_request.login(active_user_with_permissions_no_mobile)
+    assert current_user.mobile_number is None
+    client_request.get(
+        'main.begin_tour',
+        service_id=SERVICE_ONE_ID,
+        template_id=fake_uuid,
+        _expected_status=404,
+    )
+
+
+def test_should_403_if_user_does_not_have_send_permissions_for_tour_start(
+    mocker,
+    app_,
+    client,
+    api_user_active,
+    mock_get_service_template_with_multiple_placeholders,
+    service_one,
+    fake_uuid,
+):
+    validate_route_permission(
+        mocker,
+        app_,
+        "GET",
+        403,
+        url_for(
+            'main.begin_tour',
+            service_id=SERVICE_ONE_ID,
+            template_id=fake_uuid,
+        ),
+        ['view_activity'],
+        api_user_active,
+        service_one)