7 string references to 'config_test.system'

ConfigDiffTest::testDiff in core/tests/Drupal/KernelTests/Core/Config/ConfigDiffTest.php
Tests calculating the difference between two sets of configuration.
ConfigImporterTest::testUpdated in core/tests/Drupal/KernelTests/Core/Config/ConfigImporterTest.php
Tests updating of configuration during import.
ConfigImportUITest::testImportDiff in core/modules/config/tests/src/Functional/ConfigImportUITest.php
Tests the screen that shows differences between active and sync.
ConfigInstallTest::testModuleInstallation in core/tests/Drupal/KernelTests/Core/Config/ConfigInstallTest.php
Tests module installation.
ConfigLanguageOverrideTest::testConfigLanguageOverride in core/tests/Drupal/KernelTests/Core/Config/ConfigLanguageOverrideTest.php
Tests locale override based on language.
ConfigOverrideTest::testConfOverride in core/tests/Drupal/KernelTests/Core/Config/ConfigOverrideTest.php
Tests configuration override.
ConfigSnapshotTest::testSnapshot in core/tests/Drupal/KernelTests/Core/Config/ConfigSnapshotTest.php
Tests config snapshot creation and updating.

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