BackdropWebTestCase::setUp in core/modules/simpletest/backdrop_web_test_case.php

Sets up a Backdrop site for running functional and integration tests.

cron.php in core/cron.php

Handles incoming requests to fire off regularly-scheduled tasks (cron jobs).

CronRunTestCase::testCronCacheExpiration in core/modules/system/tests/system.test

Tests that hook_flush_caches() is not invoked on every single cron run.

cron_example_form_cron_run_submit in modules/examples/cron_example/cron_example.module

Allow user to directly execute cron, optionally forcing it.

drupal_cron_run in core/includes/drupal.inc

Executes a cron run when called.

FileDeleteTest::testInUse in core/modules/simpletest/tests/file.test

Tries deleting a file that is in use.

FileFieldRevisionTestCase::testRevisions in core/modules/file/tests/file.test

Tests creating multiple revisions of a node and managing attached files.

install_finished in core/includes/install.core.inc

Finishes importing files at end of installation.

queue_example_add_remove_form_run_cron in modules/examples/queue_example/queue_example.module

Submit function for "run cron" button.

system_run_automated_cron in core/modules/system/system.module

Run the automated cron if enabled.

system_run_cron in core/modules/system/system.admin.inc

Menu callback: run cron manually.

system_run_cron_submit in core/modules/system/system.admin.inc

Submit callback; run cron.