Test to ensure that the comment's content array is rebuilt for every call to comment_view().
function testCommentRebuild() {
// Update the comment settings so preview isn't required.
$this
->drupalLogin($this->admin_user);
$this
->setCommentSubject(TRUE);
$this
->setCommentPreview(DRUPAL_OPTIONAL);
$this
->drupalLogout();
// Log in as the web user and add the comment.
$this
->drupalLogin($this->web_user);
$subject_text = $this
->randomName();
$comment_text = $this
->randomName();
$comment = $this
->postComment($this->node, $comment_text, $subject_text, TRUE);
$comment_loaded = comment_load($comment->id);
$this
->assertTrue($this
->commentExists($comment), 'Comment found.');
// Add the property to the content array and then see if it still exists on build.
$comment_loaded->content['test_property'] = array(
'#value' => $this
->randomString(),
);
$built_content = comment_view($comment_loaded, $this->node);
// This means that the content was rebuilt as the added test property no longer exists.
$this
->assertFalse(isset($built_content['test_property']), 'Comment content was emptied before being built.');
}