Add docs for cakephp/cakephp#18959

en/appendices/5-3-migration-guide.rst

@@ -160,6 +160,9 @@ TestSuite
 - ``assertRedirectBackToReferer()`` added to assert a successful redirect has been made to the referer URL.
 - ``assertFlashMessageContains()`` and ``assertFlashMessageContainsAt()`` were added. These methods enable
   substring matching of flash message content.
+- ``TestFixture::$tableAlias`` was added. This property lets you define the
+  table alias that will be used to load an ``ORM\Table`` instance for a fixture.
+  This improves compatibility for schemas that do not closely follow naming conventions.
 
 Utility
 -------

en/development/testing.rst

@@ -550,9 +550,20 @@ in your **tests/Fixture** directory, with the following content::
 
     class ArticlesFixture extends TestFixture
     {
-          // Optional. Set this property to load fixtures to a different test datasource
+          // Optional. Set this property to load fixtures
+          // to a different test datasource
           public $connection = 'test';
 
+          // Optional. Lets you define which table alias is used when
+          // reflecting schema and inserting rows. Inferred from the
+          // class name by default. Added in 5.3.0
+          public $tableAlias = 'Articles';
+
+          // Optional. Lets you define the table name for a fixture.
+          // If defined, this table name will be camelized to create
+          // $tableAlias.
+          public $table = 'articles';
+
           public $records = [
               [
                   'title' => 'First Article',