18 files declare their use of PathAliasTestTrait

AliasTest.php in core/modules/path_alias/tests/src/Kernel/AliasTest.php
BrowserTestBaseTest.php in core/tests/Drupal/FunctionalTests/BrowserTestBaseTest.php
ContentNegotiationRoutingTest.php in core/tests/Drupal/KernelTests/Core/Routing/ContentNegotiationRoutingTest.php
DbDumpTest.php in core/modules/mysql/tests/src/Kernel/mysql/DbDumpTest.php
DisplayFeedTest.php in core/modules/views/tests/src/Functional/Plugin/DisplayFeedTest.php
DisplayFeedTranslationTest.php in core/modules/views/tests/src/Functional/Plugin/DisplayFeedTranslationTest.php
EntityAliasTest.php in core/modules/path_alias/tests/src/Kernel/EntityAliasTest.php
LinkFieldTest.php in core/modules/link/tests/src/Functional/LinkFieldTest.php
LocalePathTest.php in core/modules/locale/tests/src/Functional/LocalePathTest.php
MigrateUrlAliasTest.php in core/modules/path/tests/src/Kernel/Migrate/d6/MigrateUrlAliasTest.php
MigrateUrlAliasTestBase.php in core/modules/path/tests/src/Kernel/Migrate/d7/MigrateUrlAliasTestBase.php
PathAliasMenuLinkContentTest.php in core/modules/menu_link_content/tests/src/Kernel/PathAliasMenuLinkContentTest.php
PathEncodedTest.php in core/tests/Drupal/FunctionalTests/Routing/PathEncodedTest.php
PathTestBase.php in core/modules/path/tests/src/Functional/PathTestBase.php
RouteCachingNonPathLanguageNegotiationTest.php in core/tests/Drupal/FunctionalTests/Routing/RouteCachingNonPathLanguageNegotiationTest.php
RouteProviderTest.php in core/tests/Drupal/KernelTests/Core/Routing/RouteProviderTest.php
ShortcutLinksTest.php in core/modules/shortcut/tests/src/Functional/ShortcutLinksTest.php
UrlAlterFunctionalTest.php in core/modules/path_alias/tests/src/Functional/UrlAlterFunctionalTest.php

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.