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diff --git a/web/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php b/web/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php
new file mode 100644
index 000000000..e35308603
--- /dev/null
+++ b/web/core/modules/field/src/Tests/FieldImportDeleteUninstallUiTest.php
@@ -0,0 +1,117 @@
+<?php
+
+namespace Drupal\field\Tests;
+
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+
+/**
+ * Delete field storages and fields during config synchronization and uninstall
+ * module that provides the field type through the UI.
+ *
+ * @group field
+ * @see \Drupal\field\ConfigImporterFieldPurger
+ * @see field_config_import_steps_alter()
+ * @see field_form_config_admin_import_form_alter()
+ */
+class FieldImportDeleteUninstallUiTest extends FieldTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['entity_test', 'telephone', 'config', 'filter', 'datetime'];
+
+  protected function setUp() {
+    parent::setUp();
+
+    $this->drupalLogin($this->drupalCreateUser(['synchronize configuration']));
+  }
+
+  /**
+   * Tests deleting field storages and fields as part of config import.
+   */
+  public function testImportDeleteUninstall() {
+    // Create a telephone field.
+    $field_storage = FieldStorageConfig::create([
+      'field_name' => 'field_tel',
+      'entity_type' => 'entity_test',
+      'type' => 'telephone',
+    ]);
+    $field_storage->save();
+    FieldConfig::create([
+      'field_storage' => $field_storage,
+      'bundle' => 'entity_test',
+    ])->save();
+
+    // Create a text field.
+    $date_field_storage = FieldStorageConfig::create([
+      'field_name' => 'field_date',
+      'entity_type' => 'entity_test',
+      'type' => 'datetime',
+    ]);
+    $date_field_storage->save();
+    FieldConfig::create([
+      'field_storage' => $date_field_storage,
+      'bundle' => 'entity_test',
+    ])->save();
+
+    // Create an entity which has values for the telephone and text field.
+    $entity = EntityTest::create();
+    $value = '+0123456789';
+    $entity->field_tel = $value;
+    $entity->field_date = time();
+    $entity->name->value = $this->randomMachineName();
+    $entity->save();
+
+    // Delete the text field before exporting configuration so that we can test
+    // that deleted fields that are provided by modules that will be uninstalled
+    // are also purged and that the UI message includes such fields.
+    $date_field_storage->delete();
+
+    // Verify entity has been created properly.
+    $id = $entity->id();
+    $entity = EntityTest::load($id);
+    $this->assertEqual($entity->field_tel->value, $value);
+    $this->assertEqual($entity->field_tel[0]->value, $value);
+
+    $active = $this->container->get('config.storage');
+    $sync = $this->container->get('config.storage.sync');
+    $this->copyConfig($active, $sync);
+
+    // Stage uninstall of the Telephone module.
+    $core_extension = $this->config('core.extension')->get();
+    unset($core_extension['module']['telephone']);
+    $sync->write('core.extension', $core_extension);
+
+    // Stage the field deletion
+    $sync->delete('field.storage.entity_test.field_tel');
+    $sync->delete('field.field.entity_test.entity_test.field_tel');
+    $this->drupalGet('admin/config/development/configuration');
+    // Test that the message for one field being purged during a configuration
+    // synchronization is correct.
+    $this->assertText('This synchronization will delete data from the field entity_test.field_tel.');
+
+    // Stage an uninstall of the datetime module to test the message for
+    // multiple fields.
+    unset($core_extension['module']['datetime']);
+    $sync->write('core.extension', $core_extension);
+
+    $this->drupalGet('admin/config/development/configuration');
+    $this->assertText('This synchronization will delete data from the fields: entity_test.field_tel, entity_test.field_date.');
+
+    // This will purge all the data, delete the field and uninstall the
+    // Telephone and Text modules.
+    $this->drupalPostForm(NULL, [], t('Import all'));
+    $this->assertNoText('Field data will be deleted by this synchronization.');
+    $this->rebuildContainer();
+    $this->assertFalse(\Drupal::moduleHandler()->moduleExists('telephone'));
+    $this->assertFalse(\Drupal::entityManager()->loadEntityByUuid('field_storage_config', $field_storage->uuid()), 'The telephone field has been deleted by the configuration synchronization');
+    $deleted_storages = \Drupal::state()->get('field.storage.deleted') ?: [];
+    $this->assertFalse(isset($deleted_storages[$field_storage->uuid()]), 'Telephone field has been completed removed from the system.');
+    $this->assertFalse(isset($deleted_storages[$field_storage->uuid()]), 'Text field has been completed removed from the system.');
+  }
+
+}