public function testUpdatePostText()
{
$dao = new PostMySQLDAO();
$post = $dao->getPost(10, 'twitter');
$this->assertEqual($post->post_text, "This is post 10");
// bad id
$update_cnt = $dao->updatePostText(-99, 'twitter', 'updated post text');
$this->assertEqual($update_cnt, 0);
// bad network
$update_cnt = $dao->updatePostText(10, 'no-net', 'updated post text');
$this->assertEqual($update_cnt, 0);
// good id
$update_cnt = $dao->updatePostText(10, 'twitter', 'This is updated post 10');
$this->assertEqual($update_cnt, 1);
$post = $dao->getPost(10, 'twitter');
$this->assertEqual($post->post_text, 'This is updated post 10');
}