Add getComponents test for empty object

Author: JakeQZ

tests/Unit/Property/SelectorTest.php

@@ -403,6 +403,18 @@ public function setComponentsSetsComponentsProvided(array $components, array $ex
         self::assertSame($expectedRepresenation, $representation);
     }
 
+    /**
+     * @test
+     */
+    public function getComponentsReturnsEmptyArrayIfNotSet(): void
+    {
+        $subject = new Selector();
+
+        $result = $subject->getComponents();
+
+        self::assertSame([], $result);
+    }
+
     /**
      * @test
      *