public function testGetById()
 {
     $product1 = Product::with("description.language")->find(1);
     //MacBook price:500
     $this->assertNotNull($product1);
     $this->assertEquals(500, $product1->price);
     $product2 = Product::find(44);
     //MacBook price:1000
     $this->assertNotNull($product2);
     $this->assertEquals(1000, $product2->price);
 }