--- /dev/null
+<?php
+
+namespace Drupal\Tests\image\Kernel;
+
+use Drupal\image\Entity\ImageStyle;
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests config import for Image styles.
+ *
+ * @group image
+ */
+class ImageImportTest extends KernelTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public static $modules = ['system', 'image', 'image_module_test'];
+
+ /**
+ * Tests importing image styles.
+ */
+ public function testImport() {
+ $style = ImageStyle::create([
+ 'name' => 'test'
+ ]);
+
+ $style->addImageEffect(['id' => 'image_module_test_null']);
+ $style->addImageEffect(['id' => 'image_module_test_null']);
+ $style->save();
+
+ $this->assertEqual(count($style->getEffects()), 2);
+
+ $uuid = \Drupal::service('uuid')->generate();
+ $style->set('effects', [
+ $uuid => [
+ 'id' => 'image_module_test_null',
+ ],
+ ]);
+ $style->save();
+
+ $style = ImageStyle::load('test');
+ $this->assertEqual(count($style->getEffects()), 1);
+ }
+
+}