9 string references to YAML keys in file_test.routing.yml

FileItemTest::setUp in drupal/core/modules/file/lib/Drupal/file/Tests/FileItemTest.php
Set the default field storage backend for fields created during tests.
RdfaMarkupTest::testAttributesInMarkupFile in drupal/core/modules/rdf/lib/Drupal/rdf/Tests/RdfaMarkupTest.php
Tests if file fields in teasers have correct resources.
RemoteFileDirectoryTest::setUp in drupal/core/modules/system/lib/Drupal/system/Tests/File/RemoteFileDirectoryTest.php
Sets up a Drupal site for running functional and integration tests.
RemoteFileScanDirectoryTest::setUp in drupal/core/modules/system/lib/Drupal/system/Tests/File/RemoteFileScanDirectoryTest.php
Sets up a Drupal site for running functional and integration tests.
RemoteFileUnmanagedCopyTest::setUp in drupal/core/modules/system/lib/Drupal/system/Tests/File/RemoteFileUnmanagedCopyTest.php
Sets up a Drupal site for running functional and integration tests.
RemoteFileUnmanagedDeleteRecursiveTest::setUp in drupal/core/modules/system/lib/Drupal/system/Tests/File/RemoteFileUnmanagedDeleteRecursiveTest.php
Sets up a Drupal site for running functional and integration tests.
RemoteFileUnmanagedDeleteTest::setUp in drupal/core/modules/system/lib/Drupal/system/Tests/File/RemoteFileUnmanagedDeleteTest.php
Sets up a Drupal site for running functional and integration tests.
RemoteFileUnmanagedSaveDataTest::setUp in drupal/core/modules/system/lib/Drupal/system/Tests/File/RemoteFileUnmanagedSaveDataTest.php
Sets up a Drupal site for running functional and integration tests.
ScanDirectoryTest::testOptionCallback in drupal/core/modules/system/lib/Drupal/system/Tests/File/ScanDirectoryTest.php
Check that the callback function is called correctly.