public function deleteMeta()
{
$articles = factory(Article::class, 2)->create()->all();
$this->addMetasToArticles($articles);
foreach ($articles as $oneEntity) {
$oneEntity->push();
}
$article = current($articles);
$metaEntity = $article->metas->first();
$metaCount = ArticleMeta::where('article_id', '=', $article->article_id)->count();
$this->delete('/articles/' . $article->article_id . '/meta/' . $metaEntity->name);
$updatedArticle = Article::find($article->article_id);
$this->assertEquals($metaCount - 1, $updatedArticle->metas->count());
}
