6 invocations of hook_update_index()

SearchExactTestCase::testExactQuery in drupal-7.x/modules/search/search.test: Tests that the correct number of pager links are found for both keywords and phrases.
SearchNodeAccessTest::testPhraseSearchPunctuation in drupal-7.x/modules/search/search.test: Tests that search returns results with punctuation in the search phrase.
SearchRankingTestCase::testDoubleRankings in drupal-7.x/modules/search/search.test: Verifies that if we combine two rankings, search still works.
SearchRankingTestCase::testHTMLRankings in drupal-7.x/modules/search/search.test: Test rankings of HTML tags.
SearchRankingTestCase::testRankings in drupal-7.x/modules/search/search.test
search_cron in drupal-7.x/modules/search/search.module: Implements hook_cron().