9 string references to 'config_test.system'

ConfigDiffTest::testDiff in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigDiffTest.php
Tests calculating the difference between two sets of configuration.
ConfigImporterTest::testUpdated in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigImporterTest.php
Tests updating of configuration during import.
ConfigImportUITest::testImportDiff in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigImportUITest.php
Tests the screen that shows differences between active and staging.
ConfigInstallTest::testModuleInstallation in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigInstallTest.php
Tests module installation.
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.
ConfigOverrideTest::testConfOverride in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigOverrideTest.php
Tests configuration override.
ConfigSnapshotTest::testSnapshot in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigSnapshotTest.php
Tests config snapshot creation and updating.