.../Shortcut/ShortcutXmlAnonTest.php               | 26 ++++++++++++
 .../Shortcut/ShortcutXmlBasicAuthTest.php          | 36 +++++++++++++++++
 .../Shortcut/ShortcutXmlCookieTest.php             | 31 +++++++++++++++
 .../EntityResource/Term/TermXmlAnonTest.php        | 26 ++++++++++++
 .../EntityResource/Term/TermXmlBasicAuthTest.php   | 36 +++++++++++++++++
 .../EntityResource/Term/TermXmlCookieTest.php      | 31 +++++++++++++++
 .../EntityResource/User/UserXmlAnonTest.php        | 35 ++++++++++++++++
 .../EntityResource/User/UserXmlBasicAuthTest.php   | 46 ++++++++++++++++++++++
 .../EntityResource/User/UserXmlCookieTest.php      | 39 ++++++++++++++++++
 9 files changed, 306 insertions(+)

diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlAnonTest.php b/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlAnonTest.php
new file mode 100644
index 0000000..5929d32
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlAnonTest.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\Shortcut;
+
+use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class ShortcutXmlAnonTest extends ShortcutResourceTestBase {
+
+  use AnonResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlBasicAuthTest.php b/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlBasicAuthTest.php
new file mode 100644
index 0000000..161ecf2
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlBasicAuthTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\Shortcut;
+
+use Drupal\Tests\rest\Functional\BasicAuthResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class ShortcutXmlBasicAuthTest extends ShortcutResourceTestBase {
+
+  use BasicAuthResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['basic_auth'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'basic_auth';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlCookieTest.php b/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlCookieTest.php
new file mode 100644
index 0000000..7623e29
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Shortcut/ShortcutXmlCookieTest.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\Shortcut;
+
+use Drupal\Tests\rest\Functional\CookieResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class ShortcutXmlCookieTest extends ShortcutResourceTestBase {
+
+  use CookieResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'cookie';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlAnonTest.php b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlAnonTest.php
new file mode 100644
index 0000000..4f0a533
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlAnonTest.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\Term;
+
+use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class TermXmlAnonTest extends TermResourceTestBase {
+
+  use AnonResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlBasicAuthTest.php b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlBasicAuthTest.php
new file mode 100644
index 0000000..c890316
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlBasicAuthTest.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\Term;
+
+use Drupal\Tests\rest\Functional\BasicAuthResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class TermXmlBasicAuthTest extends TermResourceTestBase {
+
+  use BasicAuthResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['basic_auth'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'basic_auth';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlCookieTest.php b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlCookieTest.php
new file mode 100644
index 0000000..4d51abb
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/Term/TermXmlCookieTest.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\Term;
+
+use Drupal\Tests\rest\Functional\CookieResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class TermXmlCookieTest extends TermResourceTestBase {
+
+  use CookieResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'cookie';
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlAnonTest.php b/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlAnonTest.php
new file mode 100644
index 0000000..ce8d7f8
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlAnonTest.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\User;
+
+use Drupal\Tests\rest\Functional\AnonResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\User\UserResourceTestBase;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class UserXmlAnonTest extends UserResourceTestBase {
+
+  use AnonResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testPatchDxForSecuritySensitiveBaseFields() {
+    // Deserialization of the XML format is not supported.
+    $this->markTestSkipped();
+  }
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlBasicAuthTest.php b/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlBasicAuthTest.php
new file mode 100644
index 0000000..9a73bf6
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlBasicAuthTest.php
@@ -0,0 +1,46 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\User;
+
+use Drupal\Tests\rest\Functional\BasicAuthResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\User\UserResourceTestBase;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+use Drupal\user\Entity\User;
+
+/**
+ * @group rest
+ */
+class UserXmlBasicAuthTest extends UserResourceTestBase {
+
+  use BasicAuthResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = ['basic_auth'];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'basic_auth';
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testPatchDxForSecuritySensitiveBaseFields() {
+    // Deserialization of the XML format is not supported.
+    $this->markTestSkipped();
+  }
+
+}
diff --git a/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlCookieTest.php b/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlCookieTest.php
new file mode 100644
index 0000000..d1ef16e
--- /dev/null
+++ b/core/modules/rest/tests/src/Functional/EntityResource/User/UserXmlCookieTest.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Drupal\Tests\rest\Functional\EntityResource\User;
+
+use Drupal\Tests\rest\Functional\CookieResourceTestTrait;
+use Drupal\Tests\rest\Functional\EntityResource\XmlEntityNormalizationQuirksTrait;
+
+/**
+ * @group rest
+ */
+class UserXmlCookieTest extends UserResourceTestBase {
+
+  use CookieResourceTestTrait;
+  use XmlEntityNormalizationQuirksTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $format = 'xml';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $mimeType = 'text/xml; charset=UTF-8';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $auth = 'cookie';
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testPatchDxForSecuritySensitiveBaseFields() {
+    // Deserialization of the XML format is not supported.
+    $this->markTestSkipped();
+  }
+
+}