Added a section for testing when they migrate a page

src/content/1.7/development/architecture/migration-guide/_index.md

@@ -27,6 +27,7 @@ This is the list of items that usually need to be done in order to complete the
   - Checks permissions and demo mode constraints
   - Re-introduce hooks (and document the missing one if you can't for a good reason)
   - Complete `Link` class to map PrestaShop menu to the new page
+  - Create the smoke/survival tests for the migrated page
 - Deletions
   - Remove the old controller in `controllers/admin/Admin*.php`
   - Remove related old templates (in `admin-dev/themes/default/template/controllers/*`)

src/content/1.7/development/architecture/migration-guide/clean-up.md

@@ -10,4 +10,3 @@ Once everything is migrated, refactored, extracted to specific classes and worki
 * Delete the old controller.
 * Delete the old templates (delete the `admin-dev/themes/default/template/controller/{name}` folder.
 * Delete the related "legacy tests".
-

src/content/1.7/development/architecture/migration-guide/testing.md

@@ -0,0 +1,43 @@
+---
+title: Testing
+weight: 70
+---
+
+# Testing
+
+You are encouraged to add both unit and functional tests for every new class
+you have created.
+
+You **must** add a smoke test (also called "survival") for every new page
+you migrate.
+
+## Smoke testing
+
+A smoke test is a really simple and basic test that ensure the page will load with 
+the right HTTP code. This won't ensure the page will works as expected **but** if the test fails, this ensure the page is not functional.
+
+To add a new test, you need to add a new entry in the Data Provider of SurvivalTest class:
+
+```php
+<?php
+
+namespace LegacyTests\Integration\PrestaShopBundle\Controller\Admin;
+// ...
+/**
+ * @group demo
+ *
+ * To execute these tests: use "./vendor/bin/phpunit -c tests-legacy/phpunit-admin.xml --filter=SurvivalTest" command.
+ */
+class SurvivalTest extends WebTestCase
+{
+    // [...]
+
+    public function getDataProvider()
+    {
+        return [
+            'symfony_route_of_page' => ['Page title', 'symfony_route_of_page'],
+            // ...
+        ];
+    }
+}
+```