public function test_quiz_add_page_break_at()
{
$this->assertEquals(quiz_add_page_break_at('0', 0), '0,0');
$this->assertEquals(quiz_add_page_break_at('1,2,0', 0), '0,1,2,0');
$this->assertEquals(quiz_add_page_break_at('1,2,0', 1), '1,0,2,0');
$this->assertEquals(quiz_add_page_break_at('1,2,0', 2), '1,2,0,0');
$this->assertEquals(quiz_add_page_break_at('1,2,0', 3), '1,2,0');
}
quiz_add_random_questions($quiz, $addonpage, $categoryid, $randomcount, $recurse);
quiz_delete_previews($quiz);
quiz_update_sumgrades($quiz);
redirect($afteractionurl);
}
if (optional_param('addnewpagesafterselected', null, PARAM_CLEAN) && !empty($selectedquestionids) && confirm_sesskey()) {
foreach ($selectedquestionids as $questionid) {
$quiz->questions = quiz_add_page_break_after($quiz->questions, $questionid);
}
$DB->set_field('quiz', 'questions', $quiz->questions, array('id' => $quiz->id));
quiz_delete_previews($quiz);
redirect($afteractionurl);
}
$addpage = optional_param('addpage', false, PARAM_INT);
if ($addpage !== false && confirm_sesskey()) {
$quiz->questions = quiz_add_page_break_at($quiz->questions, $addpage);
$DB->set_field('quiz', 'questions', $quiz->questions, array('id' => $quiz->id));
quiz_delete_previews($quiz);
redirect($afteractionurl);
}
$deleteemptypage = optional_param('deleteemptypage', false, PARAM_INT);
if ($deleteemptypage !== false && confirm_sesskey()) {
$quiz->questions = quiz_delete_empty_page($quiz->questions, $deleteemptypage);
$DB->set_field('quiz', 'questions', $quiz->questions, array('id' => $quiz->id));
quiz_delete_previews($quiz);
redirect($afteractionurl);
}
$remove = optional_param('remove', false, PARAM_INT);
if ($remove && confirm_sesskey()) {
// Remove a question from the quiz.
// We require the user to have the 'use' capability on the question,
