public function addPost(Post $post)
{
if ($post->getAuthor() !== $this) {
throw new DomainException('Author is not allowed');
}
if ($this->hasPost($post)) {
throw new DomainException('Post already added');
}
$this->posts->add($post);
}
public function testConstruct()
{
// arrange
$author = $this->createAuthor();
// act
$post = new Post($author, 'Title of post', 'Text of post');
// assert
$this->assertEquals('Title of post', $post->getTitle());
$this->assertEquals('Text of post', $post->getText());
$this->assertSame($author, $post->getAuthor());
$this->assertTrue($author->getPosts()->contains($post));
}