12 files declare their use of DeprecatedModulesTestTrait in Drupal 8

DestinationCategoryTest.php in core/modules/migrate_drupal/tests/src/Kernel/Plugin/migrate/DestinationCategoryTest.php

FieldTypePluginManagerTest.php in core/modules/field/tests/src/Kernel/FieldTypePluginManagerTest.php

HelpTopicsSyntaxTest.php in core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php

MigrateDrupal6AuditIdsTest.php in core/modules/migrate_drupal/tests/src/Kernel/d6/MigrateDrupal6AuditIdsTest.php

MigrateDrupal7AuditIdsTest.php in core/modules/migrate_drupal/tests/src/Kernel/d7/MigrateDrupal7AuditIdsTest.php

MigrationLabelExistTest.php in core/modules/migrate_drupal_ui/tests/src/Kernel/MigrationLabelExistTest.php

MigrationProcessTest.php in core/modules/migrate_drupal/tests/src/Kernel/d6/MigrationProcessTest.php

MigrationProcessTest.php in core/modules/migrate_drupal/tests/src/Kernel/d7/MigrationProcessTest.php

MigrationProvidersExistTest.php in core/modules/migrate/tests/src/Kernel/Plugin/MigrationProvidersExistTest.php

StateFileExists.php in core/modules/migrate_drupal/tests/src/Kernel/StateFileExists.php

ValidateMigrationStateTest.php in core/modules/migrate_drupal/tests/src/Kernel/d6/ValidateMigrationStateTest.php

ValidateMigrationStateTest.php in core/modules/migrate_drupal/tests/src/Kernel/d7/ValidateMigrationStateTest.php