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diff --git a/web/modules/contrib/metatag/src/Tests/MetatagStringTest.php b/web/modules/contrib/metatag/src/Tests/MetatagStringTest.php
new file mode 100644
index 000000000..9c5beb9d2
--- /dev/null
+++ b/web/modules/contrib/metatag/src/Tests/MetatagStringTest.php
@@ -0,0 +1,311 @@
+<?php
+
+namespace Drupal\metatag\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Ensures that the Metatag field works correctly.
+ *
+ * @group Metatag
+ */
+class MetatagStringTest extends WebTestBase {
+
+  /**
+   * Admin user
+   *
+   * @var \Drupal\Core\Session\AccountInterface
+   */
+  protected $adminUser;
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = [
+    'token',
+    'node',
+    'field_ui',
+    'metatag',
+  ];
+
+  /**
+   * Permissions to grant admin user.
+   *
+   * @var array
+   */
+  protected $permissions = [
+    'administer node fields',
+    'administer content types',
+    'access administration pages',
+    'administer meta tags',
+    'administer nodes',
+    'bypass node access',
+    'administer meta tags',
+    'administer site configuration',
+    'access content',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  function setUp() {
+    parent::setUp();
+    $this->adminUser = $this->drupalCreateUser($this->permissions);
+    $this->drupalLogin($this->adminUser);
+
+    $this->drupalCreateContentType(['type' => 'page', 'display_submitted' => FALSE]);
+
+    // Add a Metatag field to the content type.
+    $this->drupalGet("admin/structure/types");
+    $this->drupalGet("admin/structure/types/manage/page/fields/add-field");
+    $this->assertResponse(200);
+    $edit = [
+      'label' => 'Metatag',
+      'field_name' => 'metatag_field',
+      'new_storage_type' => 'metatag',
+    ];
+    $this->drupalPostForm(NULL, $edit, t('Save and continue'));
+    $this->drupalPostForm(NULL, [], t('Save field settings'));
+    $this->container->get('entity.manager')->clearCachedFieldDefinitions();
+  }
+
+  /**
+   * Tests that a meta tag with single quote is not double escaped.
+   */
+  function testSingleQuote() {
+    $this->_testAString("bla'bleblu");
+  }
+
+  /**
+   * Tests that a meta tag with a double quote is not double escaped.
+   */
+  function testDoubleQuote() {
+    $this->_testAString('bla"bleblu');
+  }
+
+  /**
+   * Tests that a meta tag with an ampersand is not double escaped.
+   */
+  function testAmpersand() {
+    $this->_testAString("blable&blu");
+  }
+
+  /**
+   * Tests that specific strings are not double escaped.
+   */
+  function _testAString($string) {
+    $this->_testConfig($string);
+    $this->_testNode($string);
+    $this->_testEncodedField($string);
+  }
+
+  /**
+   * Tests that a specific config string is not double encoded.
+   */
+  function _testConfig($string) {
+    // The original strings.
+    $title_original = 'Title: ' . $string;
+    $desc_original = 'Description: ' . $string;
+
+    // The strings after they're encoded, but quotes will not be encoded.
+    $title_encoded = htmlentities($title_original, ENT_QUOTES);
+    $desc_encoded = htmlentities($desc_original, ENT_QUOTES);
+
+    // The strings double-encoded, to make sure the tags aren't broken.
+    $title_encodeded = htmlentities($title_encoded, ENT_QUOTES);
+    $desc_encodeded = htmlentities($desc_encoded, ENT_QUOTES);
+
+    // Update the Global defaults and test them.
+    $values = [
+      'title' => $title_original,
+      'description' => $desc_original,
+    ];
+    $this->drupalPostForm('admin/config/search/metatag/front', $values, 'Save');
+    $this->assertResponse(200);
+
+    $metatag_defaults = \Drupal::config('metatag.metatag_defaults.front');
+    $default_title = $metatag_defaults->get('tags')['title'];
+    $default_description = $metatag_defaults->get('tags')['description'];
+
+    // Make sure the title tag is stored correctly.
+    $this->assertEqual($title_original, $default_title, 'The title tag was stored in its original format.');
+    $this->assertNotEqual($title_encoded, $default_title, 'The title tag was not stored in an encoded format.');
+    $this->assertNotEqual($title_encodeded, $default_title, 'The title tag was not stored in a double-encoded format.');
+
+    // Make sure the description tag is stored correctly.
+    $this->assertEqual($desc_original, $default_description, 'The description tag was stored in its original format.');
+    $this->assertNotEqual($desc_encoded, $default_description, 'The description tag was not stored in an encoded format.');
+    $this->assertNotEqual($desc_encodeded, $default_description, 'The description tag was not stored in a double-encoded format.');
+
+    // Set up a node without explicit metatag description. This causes the
+    // global default to be used, which contains a token (node:summary). The
+    // token value should be correctly translated.
+
+    // Create a node.
+    $this->drupalGet("node/add/page");
+    $edit = [
+      'title[0][value]' => $title_original,
+      'body[0][value]' => $desc_original,
+    ];
+    $this->drupalPostForm("node/add/page", $edit, t('Save and publish'));
+
+    $this->config('system.site')->set('page.front', '/node/1')->save();
+
+    // Load the front page.
+    $this->drupalGet('<front>');
+    $this->assertResponse(200);
+
+    // Again, with xpath the HTML entities will be parsed automagically.
+    $xpath_title = (string) current($this->xpath("//title"));
+    $this->assertEqual($xpath_title, $title_original);
+    $this->assertNotEqual($xpath_title, $title_encoded);
+    $this->assertNotEqual($xpath_title, $title_encodeded);
+
+    // The page title should be HTML encoded; have to do this check manually
+    // because assertRaw() checks the raw HTML, not the parsed strings like
+    // xpath does.
+    $this->assertRaw('<title>' . $title_encoded . '</title>', 'Confirmed the node title tag is available in its encoded format.');
+    $this->assertNoRaw('<title>' . $title_original . '</title>', 'Confirmed the node title tag is not available in its original format.');
+    $this->assertNoRaw('<title>' . $title_encodeded . '</title>', 'Confirmed the node title tag is not double-double-encoded?');
+
+    // Again, with xpath the HTML entities will be parsed automagically.
+    $xpath = $this->xpath("//meta[@name='description']");
+    $this->assertEqual($xpath[0]['content'], $desc_original);
+    $this->assertNotEqual($xpath[0]['content'], $desc_encoded);
+    $this->assertNotEqual($xpath[0]['content'], $desc_encodeded);
+  }
+
+  /**
+   * Tests that a specific node string is not double escaped.
+   */
+  function _testNode($string) {
+    // The original strings.
+    $title_original = 'Title: ' . $string;
+    $desc_original = 'Description: ' . $string;
+
+    // The strings after they're encoded, but quotes will not be encoded.
+    $title_encoded = htmlentities($title_original, ENT_QUOTES);
+    $desc_encoded = htmlentities($desc_original, ENT_QUOTES);
+
+    // The strings double-encoded, to make sure the tags aren't broken.
+    $title_encodeded = htmlentities($title_encoded, ENT_QUOTES);
+    $desc_encodeded = htmlentities($desc_encoded, ENT_QUOTES);
+
+    // Update the Global defaults and test them.
+    $this->drupalGet('admin/config/search/metatag/global');
+    $this->assertResponse(200);
+    $values = [
+      'title' => $title_original,
+      'description' => $desc_original,
+    ];
+    $this->drupalPostForm(NULL, $values, t('Save'));
+    $this->assertResponse(200);
+
+    // Set up a node without explicit metatag description. This causes the
+    // global default to be used, which contains a token (node:summary). The
+    // token value should be correctly translated.
+
+    // Create a node.
+    $this->drupalGet('node/add/page');
+    $this->assertResponse(200);
+    $edit = [
+      'title[0][value]' => $title_original,
+      'body[0][value]' => $desc_original,
+    ];
+    $this->drupalPostForm(NULL, $edit, t('Save and publish'));
+    $this->assertResponse(200);
+
+    // Load the node page.
+    $this->drupalGet('node/1');
+    $this->assertResponse(200);
+
+    // Again, with xpath the HTML entities will be parsed automagically.
+    $xpath_title = (string) current($this->xpath("//title"));
+    $this->assertEqual($xpath_title, $title_original);
+    $this->assertNotEqual($xpath_title, $title_encoded);
+    $this->assertNotEqual($xpath_title, $title_encodeded);
+
+    // The page title should be HTML encoded; have to do this check manually
+    // because assertRaw() checks the raw HTML, not the parsed strings like
+    // xpath does.
+    $this->assertRaw('<title>' . $title_encoded . '</title>', 'Confirmed the node title tag is encoded.');
+    // Again, with xpath the HTML entities will be parsed automagically.
+    $xpath = $this->xpath("//meta[@name='description']");
+    $value = (string) $xpath[0]['content'];
+    $this->assertEqual($value, $desc_original);
+    $this->assertNotEqual($value, $desc_encoded);
+    $this->assertNotEqual($value, $desc_encodeded);
+
+    // Normal meta tags should be encoded properly.
+    $this->assertRaw('"' . $desc_encoded . '"', 'Confirmed the node "description" meta tag string was encoded properly.');
+    // Normal meta tags with HTML entities should be displayed in their original
+    // format.
+    $this->assertNoRaw('"' . $desc_original . '"', 'Confirmed the node "description" meta tag string does not show in its original form.');
+    // Normal meta tags should not be double-encoded.
+    $this->assertNoRaw('"' . $desc_encodeded . '"', 'Confirmed the node "description" meta tag string was not double-encoded.');
+  }
+
+  /**
+   * Tests that fields with encoded HTML entities will not be double-encoded.
+   */
+  function _testEncodedField($string) {
+    // The original strings.
+    $title_original = 'Title: ' . $string;
+    $desc_original = 'Description: ' . $string;
+
+    // The strings after they're encoded, but quotes will not be encoded.
+    $desc_encoded = htmlentities($desc_original, ENT_QUOTES);
+
+    // The strings double-encoded, to make sure the tags aren't broken.
+    $desc_encodeded = htmlentities($desc_encoded, ENT_QUOTES);
+
+    // Update the Global defaults and test them.
+    $this->drupalGet('admin/config/search/metatag/global');
+    $this->assertResponse(200);
+    $values = [
+      'title' => $title_original,
+      'description' => $desc_original,
+    ];
+    $this->drupalPostForm(NULL, $values, t('Save'));
+    $this->assertResponse(200);
+
+    // Set up a node without explicit metatag description. This causes the
+    // global default to be used, which contains a token (node:summary). The
+    // token value should be correctly translated.
+
+    // Create a node.
+    $this->drupalGet('node/add/page');
+    $this->assertResponse(200);
+    $edit = [
+      'title[0][value]' => $title_original,
+      'body[0][value]' => $desc_original,
+    ];
+    $this->drupalPostForm(NULL, $edit, t('Save and publish'));
+    $this->assertResponse(200);
+
+    // Load the node page.
+    $this->drupalGet('node/1');
+    $this->assertResponse(200);
+
+    // With xpath the HTML entities will be parsed automagically.
+    $xpath = $this->xpath("//meta[@name='description']");
+    $value = (string) $xpath[0]['content'];
+    $this->assertEqual($value, $desc_original);
+    $this->assertNotEqual($value, $desc_encoded);
+    $this->assertNotEqual($value, $desc_encodeded);
+
+    // Normal meta tags should be encoded properly.
+    $this->assertRaw('"' . $desc_encoded . '"', 'Confirmed the node "description" meta tag string was encoded properly.');
+
+    // Normal meta tags with HTML entities should be displayed in their original
+    // format.
+    $this->assertNoRaw('"' . $desc_original . '"', 'Confirmed the node "description" meta tag string does not show in its original form.');
+
+    // Normal meta tags should not be double-encoded.
+    $this->assertNoRaw('"' . $desc_encodeded . '"', 'Confirmed the node "description" meta tag string was not double-encoded.');
+  }
+
+}
+