Expect that menu items are always grouped when set in front matter

Author: emmadesilva

packages/framework/tests/Feature/AutomaticNavigationConfigurationsTest.php

@@ -284,7 +284,10 @@ public function testMainNavigationMenuWithFrontMatterGroupAndCategory()
     {
         // Since the main key in the navigation schema is 'group', that takes precedence over its 'category' alias
 
-        $this->assertMenuEquals(array_fill(0, 3, ['group' => 'group-1']), [
+        $this->assertMenuEquals([[
+            'label' => 'Group 1',
+            'children' => ['Foo', 'Bar', 'Baz'],
+        ]], [
             new MarkdownPage('foo', ['navigation.group' => 'Group 1', 'navigation.category' => 'Group 2']),
             new MarkdownPage('bar', ['navigation.group' => 'Group 1', 'navigation.category' => 'Group 2']),
             new MarkdownPage('baz', ['navigation.group' => 'Group 1', 'navigation.category' => 'Group 2']),
@@ -486,8 +489,8 @@ public function testMainNavigationMenuItemsWithTheSameLabelAreNotFilteredForDupl
     public function testMainNavigationMenuItemsWithSameLabelButDifferentGroupsAreNotFiltered()
     {
         $this->assertMenuEquals([
-            ['label' => 'Foo', 'group' => 'group-1'],
-            ['label' => 'Foo', 'group' => 'group-2'],
+            ['label' => 'Group 1', 'children' => ['Foo']],
+            ['label' => 'Group 2', 'children' => ['Foo']],
         ], [
             new MarkdownPage('foo', ['navigation.label' => 'Foo', 'navigation.group' => 'Group 1']),
             new MarkdownPage('bar', ['navigation.label' => 'Foo', 'navigation.group' => 'Group 2']),