[phalcon/incubator#973] Add test cases

Author: Jeckerson

src/Mvc/Collection.php

@@ -1244,7 +1244,6 @@ public function unserialize($data): void
              * Gets the default collectionsManager service
              */
             $manager = $container->getShared("collectionManager");
-
             if ($manager === null) {
                 throw new Exception(
                     "The injected service 'collectionManager' is not valid"

tests/integration/Collection/AggregateCest.php

@@ -19,6 +19,7 @@
 use Phalcon\Incubator\MongoDB\Mvc\Collection\Exception;
 use Phalcon\Incubator\MongoDB\Test\Fixtures\Mvc\Collections\Robots;
 use Phalcon\Incubator\MongoDB\Test\Fixtures\Traits\DiTrait;
+use Traversable;
 
 class AggregateCest
 {
@@ -69,12 +70,13 @@ public function mvcCollectionAggregate(IntegrationTester $I)
         $robots1 = Robots::aggregate([
             [
                 '$match' => [
-                    'first_name' => 'Wall'
+                    'first_name' => 'Wall',
                 ]
             ]
         ]);
 
         $I->assertInstanceOf(Cursor::class, $robots1);
+        $I->assertInstanceOf(Traversable::class, $robots1);
 
         foreach ($robots1 as $rb) {
             $I->assertIsArray($rb);

tests/integration/Collection/FindCest.php

@@ -18,6 +18,7 @@
 use Phalcon\Incubator\MongoDB\Mvc\Collection\Exception;
 use Phalcon\Incubator\MongoDB\Test\Fixtures\Mvc\Collections\Robots;
 use Phalcon\Incubator\MongoDB\Test\Fixtures\Traits\DiTrait;
+use Traversable;
 
 class FindCest
 {
@@ -77,7 +78,9 @@ public function mvcCollectionFind(IntegrationTester $I)
         }
 
         $I->assertNotEmpty($robots);
+        $I->assertInstanceOf(Traversable::class, $robots);
         $I->assertInstanceOf(Robots::class, $result[0]);
+        $I->assertInstanceOf(Traversable::class, $robotsE);
         $I->assertCount(3, $result);
         $I->assertCount(2, $robotsE->toArray());
     }