diff --git a/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php
new file mode 100644
index 0000000..be1d67b
--- /dev/null
+++ b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php
@@ -0,0 +1,175 @@
+<?php
+
+namespace Drupal\Tests\hal\Functional\EntityResource\File;
+
+use Drupal\Tests\hal\Functional\EntityResource\HalEntityNormalizationTrait;
+use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\File\FileResourceTestBase;
+use Drupal\user\Entity\User;
+
+/**
+ * @group hal
+ */
+class FileHalJsonAnonTest extends FileResourceTestBase {
+
+  use HalEntityNormalizationTrait;
+  use AnonResourceTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['hal'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'hal_json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'application/hal+json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function correctFileOwner() {
+    parent::correctFileOwner();
+    file_copy($this->entity, 'public://drupal.txt', FILE_EXISTS_ERROR);
+    $this->entity->setFileUri('public://drupal.txt');
+    $this->entity->save();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getExpectedNormalizedEntity() {
+    $default_normalization = parent::getExpectedNormalizedEntity();
+    $normalization = $this->applyHalFieldNormalization($default_normalization);
+
+    $author = User::load($this->entity->getOwnerId());
+    $url = file_create_url($this->entity->getFileUri());
+    $normalization['uri'][0]['value'] = $url;
+    $uid = $author->id();
+
+    return $normalization + [
+      '_embedded' => [
+        $this->baseUrl . '/rest/relation/file/file/uid' => [
+          [
+            '_links' => [
+              'self' => [
+                'href' => $this->baseUrl . "/user/$uid?_format=hal_json",
+              ],
+              'type' => [
+                'href' => $this->baseUrl . '/rest/type/user/user',
+              ],
+            ],
+            'uuid' => [
+              [
+                'value' => $author->uuid(),
+              ],
+            ],
+          ],
+        ],
+      ],
+      '_links' => [
+        'self' => [
+          'href' => $url,
+        ],
+        'type' => [
+          'href' => $this->baseUrl . '/rest/type/file/file',
+        ],
+        $this->baseUrl . '/rest/relation/file/file/uid' => [
+          [
+            'href' => $this->baseUrl . "/user/$uid?_format=hal_json",
+          ],
+        ],
+      ],
+      'changed' => [
+        [
+          'value' => $this->entity->getChangedTime(),
+        ],
+      ],
+      'created' => [
+        [
+          'value' => (int) $this->entity->getCreatedTime(),
+        ],
+      ],
+      'fid' => [
+        [
+          'value' => 1,
+        ],
+      ],
+      'filemime' => [
+        [
+          'value' => 'text/plain',
+        ],
+      ],
+      'filename' => [
+        [
+          'value' => 'drupal.txt',
+        ],
+      ],
+      'filesize' => [
+        [
+          'value' => (int) $this->entity->getSize(),
+        ],
+      ],
+      'langcode' => [
+        [
+          'value' => 'en',
+        ],
+      ],
+      'status' => [
+        [
+          'value' => TRUE,
+        ],
+      ],
+      'uuid' => [
+        [
+          'value' => $this->entity->uuid(),
+        ],
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getNormalizedPostEntity() {
+    return parent::getNormalizedPostEntity() + [
+      '_links' => [
+        'type' => [
+          'href' => $this->baseUrl . '/rest/type/file/file',
+        ],
+      ],
+      'uri' => [
+        [
+          'value' => file_create_url($this->entity->getFileUri()),
+        ],
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testPost() {
+    $this->markTestSkipped();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testPatch() {
+    $this->markTestSkipped();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getExpectedCacheContexts() {
+    return ['url.site'];
+  }
+
+}
diff --git a/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonBasicAuthTest.php b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonBasicAuthTest.php
new file mode 100644
index 0000000..3b1e3fe
--- /dev/null
+++ b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonBasicAuthTest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\Tests\hal\Functional\EntityResource\File;
+
+use Drupal\Tests\rest\Functional\BasicAuthResourceTestTrait;
+
+/**
+ * @group hal
+ */
+class FileHalJsonBasicAuthTest extends FileHalJsonAnonTest {
+
+  use BasicAuthResourceTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['basic_auth'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'basic_auth';
+
+}
diff --git a/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonCookieTest.php b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonCookieTest.php
new file mode 100644
index 0000000..8d62372
--- /dev/null
+++ b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonCookieTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Drupal\Tests\hal\Functional\EntityResource\File;
+
+use Drupal\Tests\rest\Functional\CookieResourceTestTrait;
+
+/**
+ * @group hal
+ */
+class FileHalJsonCookieTest extends FileHalJsonAnonTest {
+
+  use CookieResourceTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'cookie';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
index 4a8c304..ad1b4e7 100644
--- a/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
+++ b/core/modules/rest/tests/src/Functional/EntityResource/EntityResourceTestBase.php
@@ -404,7 +404,7 @@ public function testGet() {
       $this->assertFalse($response->hasHeader('X-Drupal-Cache'));
     }
     $cache_tags_header_value = $response->getHeader('X-Drupal-Cache-Tags')[0];
-    $this->assertEquals($this->getExpectedCacheTags(), empty($cache_tags_header_value) ? [] : explode(' ', $cache_tags_header_value));
+    $this->assertEquals($this->getExpectedCacheTags(), empty($cache_tags_header_value) ? [] : explode(' ', $cache_tags_header_value), '', .0, 2, TRUE);
     $cache_contexts_header_value = $response->getHeader('X-Drupal-Cache-Contexts')[0];
     $this->assertEquals($this->getExpectedCacheContexts(), empty($cache_contexts_header_value) ? [] : explode(' ', $cache_contexts_header_value));
     // Sort the serialization data first so we can do an identical comparison
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonAnonTest.php b/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonAnonTest.php
new file mode 100644
index 0000000..b3adf6e
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonAnonTest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\File;
+
+use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
+
+/**
+ * @group rest
+ */
+class FileJsonAnonTest extends FileResourceTestBase {
+
+  use AnonResourceTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'application/json';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonBasicAuthTest.php b/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonBasicAuthTest.php
new file mode 100644
index 0000000..971555c
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonBasicAuthTest.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\File;
+
+use Drupal\Tests\rest\Functional\BasicAuthResourceTestTrait;
+
+/**
+ * @group rest
+ */
+class FileJsonBasicAuthTest extends FileResourceTestBase {
+
+  use BasicAuthResourceTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['basic_auth'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'application/json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'basic_auth';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonCookieTest.php b/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonCookieTest.php
new file mode 100644
index 0000000..cffd869
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/File/FileJsonCookieTest.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\File;
+
+use Drupal\Tests\rest\Functional\CookieResourceTestTrait;
+
+/**
+ * @group rest
+ */
+class FileJsonCookieTest extends FileResourceTestBase {
+
+  use CookieResourceTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'application/json';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'cookie';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/File/FileResourceTestBase.php b/core/modules/rest/tests/src/Functional/EntityResource/File/FileResourceTestBase.php
new file mode 100644
index 0000000..3a49fb2
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/File/FileResourceTestBase.php
@@ -0,0 +1,208 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\File;
+
+use Drupal\file\Entity\File;
+use Drupal\Tests\rest\Functional\EntityResource\EntityResourceTestBase;
+use Drupal\user\Entity\User;
+
+abstract class FileResourceTestBase extends EntityResourceTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['file', 'node', 'user'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $entityTypeId = 'file';
+
+  /**
+   * @var \Drupal\file\FileInterface
+   */
+  protected $entity;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $patchProtectedFieldNames = [
+    'status',
+    'changed',
+  ];
+
+  /**
+   * Ugly trick.
+   */
+  protected function correctFileOwner() {
+    $account = static::$auth ? User::load(2) : User::load(0);
+    $this->entity->setOwnerId($account->id());
+    $this->entity->setOwner($account);
+    $this->entity->save();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function grantPermissionsToTestedRole(array $permissions) {
+    if ($permissions === ['restful delete entity:file']) {
+      $this->correctFileOwner();
+    }
+    parent::grantPermissionsToTestedRole($permissions);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUpAuthorization($method) {
+    $this->correctFileOwner();
+    $this->grantPermissionsToTestedRole(['administer files']);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function createEntity() {
+    $author = User::load(3);
+    if (!$author) {
+      $author = User::create([
+        'name' => 'Unknown',
+        'status' => 1,
+      ]);
+      $author->save();
+    }
+    $uid = $author->id();
+
+    $file = File::create([
+      'uid' => $uid,
+      'filename' => 'drupal.txt',
+      'uri' => 'private://drupal.txt',
+      'filemime' => 'text/plain',
+      'status' => FILE_STATUS_PERMANENT,
+    ]);
+    file_put_contents($file->getFileUri(), 'Drupal');
+    $file->save();
+
+    return $file;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getExpectedNormalizedEntity() {
+    $author = User::load($this->entity->getOwnerId());
+    return [
+      'changed' => [
+        [
+          'value' => $this->entity->getChangedTime(),
+        ],
+      ],
+      'created' => [
+        [
+          'value' => (int) $this->entity->getCreatedTime(),
+        ],
+      ],
+      'fid' => [
+        [
+          'value' => 1,
+        ],
+      ],
+      'filemime' => [
+        [
+          'value' => 'text/plain',
+        ],
+      ],
+      'filename' => [
+        [
+          'value' => 'drupal.txt',
+        ],
+      ],
+      'filesize' => [
+        [
+          'value' => (int) $this->entity->getSize(),
+        ],
+      ],
+      'langcode' => [
+        [
+          'value' => 'en',
+        ],
+      ],
+      'status' => [
+        [
+          'value' => TRUE,
+        ],
+      ],
+      'uid' => [
+        [
+          'target_id' => (int) $author->id(),
+          'target_type' => 'user',
+          'target_uuid' => $author->uuid(),
+          'url' => base_path() . 'user/' . $author->id(),
+        ],
+      ],
+      'uri' => [
+        [
+          'value' => 'private://drupal.txt',
+        ],
+      ],
+      'uuid' => [
+        [
+          'value' => $this->entity->uuid(),
+        ],
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getNormalizedPostEntity() {
+    $uid = static::$auth ? 2 : 0;
+    return [
+      'uid' => [
+        [
+          'target_id' => $uid,
+        ],
+      ],
+      'filename' => [
+        [
+          'value' => 'drupal.txt',
+        ],
+      ],
+    ];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getExpectedCacheContexts() {
+    return [];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testPost() {
+    $this->markTestSkipped();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getExpectedUnauthorizedAccessMessage($method) {
+    if ($this->config('rest.settings')->get('bc_entity_resource_permissions')) {
+      return parent::getExpectedUnauthorizedAccessMessage($method);
+    }
+    if ($method === 'PATCH') {
+      return 'You are not authorized to update this file entity.';
+    }
+    return parent::getExpectedUnauthorizedAccessMessage($method);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getExpectedCacheTags() {
+    return array_diff(parent::getExpectedCacheTags(), ['config:user.role.anonymous']);
+  }
+}