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diff --git a/web/core/modules/search/src/Tests/SearchEmbedFormTest.php b/web/core/modules/search/src/Tests/SearchEmbedFormTest.php
new file mode 100644
index 000000000..5f3fbea32
--- /dev/null
+++ b/web/core/modules/search/src/Tests/SearchEmbedFormTest.php
@@ -0,0 +1,85 @@
+<?php
+
+namespace Drupal\search\Tests;
+
+/**
+ * Verifies that a form embedded in search results works.
+ *
+ * @group search
+ */
+class SearchEmbedFormTest extends SearchTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['search_embedded_form'];
+
+  /**
+   * Node used for testing.
+   *
+   * @var \Drupal\node\NodeInterface
+   */
+  protected $node;
+
+  /**
+   * Count of how many times the form has been submitted.
+   *
+   * @var int
+   */
+  protected $submitCount = 0;
+
+  protected function setUp() {
+    parent::setUp();
+
+    // Create a user and a node, and update the search index.
+    $test_user = $this->drupalCreateUser(['access content', 'search content', 'administer nodes']);
+    $this->drupalLogin($test_user);
+
+    $this->node = $this->drupalCreateNode();
+
+    $this->container->get('plugin.manager.search')->createInstance('node_search')->updateIndex();
+    search_update_totals();
+
+    // Set up a dummy initial count of times the form has been submitted.
+    $this->submitCount = \Drupal::state()->get('search_embedded_form.submit_count');
+    $this->refreshVariables();
+  }
+
+  /**
+   * Tests that the embedded form appears and can be submitted.
+   */
+  public function testEmbeddedForm() {
+    // First verify we can submit the form from the module's page.
+    $this->drupalPostForm('search_embedded_form',
+      ['name' => 'John'],
+      t('Send away'));
+    $this->assertText(t('Test form was submitted'), 'Form message appears');
+    $count = \Drupal::state()->get('search_embedded_form.submit_count');
+    $this->assertEqual($this->submitCount + 1, $count, 'Form submission count is correct');
+    $this->submitCount = $count;
+
+    // Now verify that we can see and submit the form from the search results.
+    $this->drupalGet('search/node', ['query' => ['keys' => $this->node->label()]]);
+    $this->assertText(t('Your name'), 'Form is visible');
+    $this->drupalPostForm(NULL,
+      ['name' => 'John'],
+      t('Send away'));
+    $this->assertText(t('Test form was submitted'), 'Form message appears');
+    $count = \Drupal::state()->get('search_embedded_form.submit_count');
+    $this->assertEqual($this->submitCount + 1, $count, 'Form submission count is correct');
+    $this->submitCount = $count;
+
+    // Now verify that if we submit the search form, it doesn't count as
+    // our form being submitted.
+    $this->drupalPostForm('search',
+      ['keys' => 'foo'],
+      t('Search'));
+    $this->assertNoText(t('Test form was submitted'), 'Form message does not appear');
+    $count = \Drupal::state()->get('search_embedded_form.submit_count');
+    $this->assertEqual($this->submitCount, $count, 'Form submission count is correct');
+    $this->submitCount = $count;
+  }
+
+}