25 files declare their use of Random

config_entity_static_cache_test.module in core/modules/config/tests/config_entity_static_cache_test/config_entity_static_cache_test.module
Provides configuration entity static cache test helpers.
EmailItem.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EmailItem.php
EntityResourceTestBase.php in core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
EntityTestForm.php in core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
FileCacheFactoryTest.php in core/tests/Drupal/Tests/Component/FileCache/FileCacheFactoryTest.php
FileItem.php in core/modules/file/src/Plugin/Field/FieldType/FileItem.php
FileStorageReadOnlyTest.php in core/tests/Drupal/Tests/Component/PhpStorage/FileStorageReadOnlyTest.php
FileStorageTest.php in core/tests/Drupal/Tests/Component/PhpStorage/FileStorageTest.php
HtmlTest.php in core/tests/Drupal/Tests/Component/Utility/HtmlTest.php
ImageItem.php in core/modules/image/src/Plugin/Field/FieldType/ImageItem.php
LinkItem.php in core/modules/link/src/Plugin/Field/FieldType/LinkItem.php
MailTest.php in core/modules/system/tests/src/Kernel/Mail/MailTest.php
MTimeProtectedFileStorageBase.php in core/tests/Drupal/Tests/Component/PhpStorage/MTimeProtectedFileStorageBase.php
PathItem.php in core/modules/path/src/Plugin/Field/FieldType/PathItem.php
PhpStorageTestBase.php in core/tests/Drupal/Tests/Component/PhpStorage/PhpStorageTestBase.php
PhpTransliterationTest.php in core/tests/Drupal/Tests/Component/Transliteration/PhpTransliterationTest.php
PhpTransliterationTest.php in core/tests/Drupal/Tests/Core/Transliteration/PhpTransliterationTest.php
RandomGeneratorTrait.php in core/tests/Drupal/Tests/RandomGeneratorTrait.php
RandomTest.php in core/tests/Drupal/Tests/Component/Utility/RandomTest.php
ResourceTestBase.php in core/modules/jsonapi/tests/src/Functional/ResourceTestBase.php
StringItem.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldType/StringItem.php
StringLongItem.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldType/StringLongItem.php
TextItemBase.php in core/modules/text/src/Plugin/Field/FieldType/TextItemBase.php
UnitTestCase.php in core/tests/Drupal/Tests/UnitTestCase.php
UserAgentTest.php in core/tests/Drupal/Tests/Component/Utility/UserAgentTest.php

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