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diff --git a/web/core/modules/file/tests/src/Functional/Formatter/FileMediaFormatterTestBase.php b/web/core/modules/file/tests/src/Functional/Formatter/FileMediaFormatterTestBase.php
new file mode 100644
index 000000000..5ff99f4b0
--- /dev/null
+++ b/web/core/modules/file/tests/src/Functional/Formatter/FileMediaFormatterTestBase.php
@@ -0,0 +1,93 @@
+<?php
+
+namespace Drupal\Tests\file\Functional\Formatter;
+
+use Drupal\Component\Utility\Unicode;
+use Drupal\Core\Field\FieldStorageDefinitionInterface;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\Tests\BrowserTestBase;
+
+/**
+ * Provides methods specifically for testing File module's media formatter's.
+ */
+abstract class FileMediaFormatterTestBase extends BrowserTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'entity_test',
+    'field',
+    'file',
+    'user',
+    'system',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->drupalLogin($this->drupalCreateUser(['view test entity']));
+  }
+
+  /**
+   * Creates a file field and set's the correct formatter.
+   *
+   * @param string $formatter
+   *   The formatter ID.
+   * @param string $file_extensions
+   *   The file extensions of the new field.
+   * @param array $formatter_settings
+   *   Settings for the formatter.
+   *
+   * @return \Drupal\field\Entity\FieldConfig
+   *   Newly created file field.
+   */
+  protected function createMediaField($formatter, $file_extensions, array $formatter_settings = []) {
+    $entity_type = $bundle = 'entity_test';
+    $field_name = Unicode::strtolower($this->randomMachineName());
+
+    FieldStorageConfig::create([
+      'entity_type' => $entity_type,
+      'field_name' => $field_name,
+      'type' => 'file',
+      'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
+    ])->save();
+    $field_config = FieldConfig::create([
+      'entity_type' => $entity_type,
+      'field_name' => $field_name,
+      'bundle' => $bundle,
+      'settings' => [
+        'file_extensions' => trim($file_extensions),
+      ],
+    ]);
+    $field_config->save();
+
+    $display = entity_get_display('entity_test', 'entity_test', 'full');
+    $display->setComponent($field_name, [
+      'type' => $formatter,
+      'settings' => $formatter_settings,
+    ])->save();
+
+    return $field_config;
+  }
+
+  /**
+   * Data provider for testRender.
+   *
+   * @return array
+   *   An array of data arrays.
+   *   The data array contains:
+   *     - The number of expected HTML tags.
+   *     - An array of settings for the field formatter.
+   */
+  public function dataProvider() {
+    return [
+      [2, []],
+      [1, ['multiple_file_display_type' => 'sources']],
+    ];
+  }
+
+}