Fills out a user's personal contact form and submits it.
$account: A user object of the user being contacted.
$message: (optional) An array with the form fields being used. Defaults to an empty array.
protected function submitPersonalContact($account, array $message = array()) {
$message += array(
'subject' => $this
->randomName(16),
'message' => $this
->randomName(64),
);
$this
->drupalPost('user/' . $account->uid . '/contact', $message, t('Send message'));
return $message;
}