Create a simpletest test to add additional form elements using the "Add another item" button
The problem was with the drupalPost() method.  I managed to solve the problem by changing the first argument to NULL (e.g. $this-&gt;drupalPost(NULL, $edit, t('Save'));), which sets the target to the current page. Still not sure why this works instead of string denoting the path.  Never-the-less it did solve the problem.