--- /dev/null
+<?php
+
+namespace Drupal\system\Tests\Image;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests image toolkit setup form.
+ *
+ * @group Image
+ */
+class ToolkitSetupFormTest extends WebTestBase {
+
+ /**
+ * Admin user account.
+ *
+ * @var \Drupal\user\Entity\User
+ */
+ protected $adminUser;
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['system', 'image_test'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+ $this->adminUser = $this->drupalCreateUser([
+ 'administer site configuration',
+ ]);
+ $this->drupalLogin($this->adminUser);
+ }
+
+ /**
+ * Test Image toolkit setup form.
+ */
+ public function testToolkitSetupForm() {
+ // Get form.
+ $this->drupalGet('admin/config/media/image-toolkit');
+
+ // Test that default toolkit is GD.
+ $this->assertFieldByName('image_toolkit', 'gd', 'The default image toolkit is GD.');
+
+ // Test changing the jpeg image quality.
+ $edit = ['gd[image_jpeg_quality]' => '70'];
+ $this->drupalPostForm(NULL, $edit, 'Save configuration');
+ $this->assertEqual($this->config('system.image.gd')->get('jpeg_quality'), '70');
+
+ // Test changing the toolkit.
+ $edit = ['image_toolkit' => 'test'];
+ $this->drupalPostForm(NULL, $edit, 'Save configuration');
+ $this->assertEqual($this->config('system.image')->get('toolkit'), 'test');
+ $this->assertFieldByName('test[test_parameter]', '10');
+
+ // Test changing the test toolkit parameter.
+ $edit = ['test[test_parameter]' => '0'];
+ $this->drupalPostForm(NULL, $edit, 'Save configuration');
+ $this->assertText(t('Test parameter should be different from 0.'), 'Validation error displayed.');
+ $edit = ['test[test_parameter]' => '20'];
+ $this->drupalPostForm(NULL, $edit, 'Save configuration');
+ $this->assertEqual($this->config('system.image.test_toolkit')->get('test_parameter'), '20');
+
+ // Test access without the permission 'administer site configuration'.
+ $this->drupalLogin($this->drupalCreateUser(['access administration pages']));
+ $this->drupalGet('admin/config/media/image-toolkit');
+ $this->assertResponse(403);
+ }
+
+}