6 calls to config_context_enter()

ConfigLocaleOverride::testConfigLocaleOverride in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigLocaleOverride.php
Tests basic locale override.
ConfigLocaleOverride::testConfigLocaleUserAndGlobalOverride in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigLocaleOverride.php
Tests locale override in combination with global overrides.
ConfigLocaleOverride::testConfigLocaleUserOverride in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigLocaleOverride.php
Tests locale override based on user's preferred language.
ConfigLocaleOverride::testInvalidContextName in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigLocaleOverride.php
Tests config_context_enter() invalid context name handling.
ConfigOverrideTest::testConfOverride in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigOverrideTest.php
Tests configuration override.
user_mail in drupal/core/modules/user/user.module
Implements hook_mail().