[5.5] Fix unit test for assertJsonCount (#22938)

* Improve unit test for assertJsonCount

* style

missing comma

Author: crissi

tests/Foundation/FoundationTestResponseTest.php

@@ -156,11 +156,11 @@ public function testAssertJsonCount()
         $response->assertJsonCount(3, 'bars');
 
         // With nested key
-        $response->assertJsonCount(2, 'baz.*.bar');
+        $response->assertJsonCount(1, 'barfoo.0.bar');
+        $response->assertJsonCount(3, 'barfoo.2.bar');
 
         // Without structure
         $response = TestResponse::fromBaseResponse(new Response(new JsonSerializableSingleResourceStub));
-
         $response->assertJsonCount(4);
     }
 
@@ -211,6 +211,11 @@ public function jsonSerialize()
                 ['foo' => 'bar 0', 'bar' => ['foo' => 'bar 0', 'bar' => 'foo 0']],
                 ['foo' => 'bar 1', 'bar' => ['foo' => 'bar 1', 'bar' => 'foo 1']],
             ],
+            'barfoo' => [
+                ['bar' => ['bar' => 'foo 0']],
+                ['bar' => ['bar' => 'foo 0', 'bar' => 'foo 0']],
+                ['bar' => ['foo' => 'bar 0', 'bar' => 'foo 0', 'rab' => 'rab 0']],
+            ],
         ];
     }
 }