DateFieldTestCase::dateForm in core/modules/date/tests/date_field.test

Tests that date field functions properly on the node form.

DateTimeFunctionalTest::testDateFormatStorage in core/modules/system/tests/system.test

Test if the date formats are stored properly.

DateTimezoneTestCase::dateForm in core/modules/date/tests/date_timezone.test

Utility function to validate the node form displays date fields correctly.

DateTimezoneTestCase::dateMultiValueForm in core/modules/date/tests/date_timezone.test

Tests the submission of a date field's widget form when using unlimited cardinality

DateUITestCase::setUp in core/modules/date/tests/date.test

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

locale_date_format_form_submit in core/modules/locale/locale.admin.inc

Submit handler for configuring localized date formats on the locale_date_format_form.

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

Process date format string submission.

UserTimeZoneFunctionalTest::testUserTimeZone in core/modules/user/tests/user.test

Tests the display of dates and time when user-configurable time zones are set.