Add more tests

Author: mlanin

tests/DebuggerTest.php

@@ -201,7 +201,7 @@ public function it_can_show_cache_events()
     }
 
     /** @test */
-    public function it_preserves_structure()
+    public function it_preserves_object()
     {
         $this->app['router']->get('foo', function () {
             return response()->json([
@@ -214,4 +214,19 @@ public function it_preserves_structure()
             ->assertStatus(200)
             ->assertSeeText('"baz":{}');
     }
+
+    /** @test */
+    public function it_preserves_array()
+    {
+        $this->app['router']->get('foo', function () {
+            return response()->json([
+                'foo' => 'bar',
+                'baz' => [],
+            ]);
+        });
+
+        $this->json('get', '/foo')
+            ->assertStatus(200)
+            ->assertSeeText('"baz":[]');
+    }
 }