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diff --git a/web/core/tests/Drupal/FunctionalTests/Image/ToolkitTest.php b/web/core/tests/Drupal/FunctionalTests/Image/ToolkitTest.php
new file mode 100644
index 000000000..789369cee
--- /dev/null
+++ b/web/core/tests/Drupal/FunctionalTests/Image/ToolkitTest.php
@@ -0,0 +1,88 @@
+<?php
+
+namespace Drupal\FunctionalTests\Image;
+
+/**
+ * Tests image toolkit functions.
+ *
+ * @group Image
+ */
+class ToolkitTest extends ToolkitTestBase {
+  /**
+   * Check that ImageToolkitManager::getAvailableToolkits() only returns
+   * available toolkits.
+   */
+  public function testGetAvailableToolkits() {
+    $manager = $this->container->get('image.toolkit.manager');
+    $toolkits = $manager->getAvailableToolkits();
+    $this->assertTrue(isset($toolkits['test']), 'The working toolkit was returned.');
+    $this->assertTrue(isset($toolkits['test:derived_toolkit']), 'The derived toolkit was returned.');
+    $this->assertFalse(isset($toolkits['broken']), 'The toolkit marked unavailable was not returned');
+    $this->assertToolkitOperationsCalled([]);
+  }
+
+  /**
+   * Tests Image's methods.
+   */
+  public function testLoad() {
+    $image = $this->getImage();
+    $this->assertTrue(is_object($image), 'Returned an object.');
+    $this->assertEqual($image->getToolkitId(), 'test', 'Image had toolkit set.');
+    $this->assertToolkitOperationsCalled(['parseFile']);
+  }
+
+  /**
+   * Test the image_save() function.
+   */
+  public function testSave() {
+    $this->assertFalse($this->image->save(), 'Function returned the expected value.');
+    $this->assertToolkitOperationsCalled(['save']);
+  }
+
+  /**
+   * Test the image_apply() function.
+   */
+  public function testApply() {
+    $data = ['p1' => 1, 'p2' => TRUE, 'p3' => 'text'];
+    $this->assertTrue($this->image->apply('my_operation', $data), 'Function returned the expected value.');
+
+    // Check that apply was called and with the correct parameters.
+    $this->assertToolkitOperationsCalled(['apply']);
+    $calls = $this->imageTestGetAllCalls();
+    $this->assertEqual($calls['apply'][0][0], 'my_operation', "'my_operation' was passed correctly as operation");
+    $this->assertEqual($calls['apply'][0][1]['p1'], 1, 'integer parameter p1 was passed correctly');
+    $this->assertEqual($calls['apply'][0][1]['p2'], TRUE, 'boolean parameter p2 was passed correctly');
+    $this->assertEqual($calls['apply'][0][1]['p3'], 'text', 'string parameter p3 was passed correctly');
+  }
+
+  /**
+   * Test the image_apply() function.
+   */
+  public function testApplyNoParameters() {
+    $this->assertTrue($this->image->apply('my_operation'), 'Function returned the expected value.');
+
+    // Check that apply was called and with the correct parameters.
+    $this->assertToolkitOperationsCalled(['apply']);
+    $calls = $this->imageTestGetAllCalls();
+    $this->assertEqual($calls['apply'][0][0], 'my_operation', "'my_operation' was passed correctly as operation");
+    $this->assertEqual($calls['apply'][0][1], [], 'passing no parameters was handled correctly');
+  }
+
+  /**
+   * Tests image toolkit operations inheritance by derivative toolkits.
+   */
+  public function testDerivative() {
+    $toolkit_manager = $this->container->get('image.toolkit.manager');
+    $operation_manager = $this->container->get('image.toolkit.operation.manager');
+
+    $toolkit = $toolkit_manager->createInstance('test:derived_toolkit');
+
+    // Load an overwritten and an inherited operation.
+    $blur = $operation_manager->getToolkitOperation($toolkit, 'blur');
+    $invert = $operation_manager->getToolkitOperation($toolkit, 'invert');
+
+    $this->assertIdentical('foo_derived', $blur->getPluginId(), "'Blur' operation overwritten by derivative.");
+    $this->assertIdentical('bar', $invert->getPluginId(), '"Invert" operation inherited from base plugin.');
+  }
+
+}