OPENEUROPA-2025: Add tests.

modules/oe_theme_helper/tests/src/Functional/RetinaScaleEffectTest.php

@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types = 1);
+
+namespace Drupal\Tests\oe_theme_helper\Functional;
+
+use Drupal\FunctionalTests\Image\ToolkitTestBase;
+
+/**
+ * Tests that the Retina Scale effect upscales images appropriately.
+ *
+ * @group image
+ */
+class RetinaScaleEffectTest extends ToolkitTestBase {
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['image', 'oe_theme_helper'];
+
+  /**
+   * The image effect manager.
+   *
+   * @var \Drupal\image\ImageEffectManager
+   */
+  protected $manager;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+    $this->manager = $this->container->get('plugin.manager.image.effect');
+  }
+
+  /**
+   * Test the retina_image_scale_effect() function.
+   */
+  public function testRetinaScaleEffect() {
+    $this->assertImageEffect('retina_image_scale', [
+      // Set the desired width to be much higher than the image width.
+      'width' => $this->image->getWidth() * 10,
+    ]);
+    $this->assertToolkitOperationsCalled(['scale']);
+
+    // Check the parameters.
+    $calls = $this->imageTestGetAllCalls();
+    $this->assertEqual($calls['scale'][0][0], $this->image->getWidth() * 2, 'Width is double the original size.');
+    $this->assertEqual($calls['scale'][0][1], $this->image->getHeight() * 2, 'Height is double the original size.');
+  }
+
+  /**
+   * Test the image_scale_effect() function using a multiplier of 3.
+   */
+  public function testTripleMultiplierRetinaScaleEffect() {
+    $this->assertImageEffect('retina_image_scale', [
+      // Set the desired width to be much higher than the image width.
+      'width' => $this->image->getWidth() * 10,
+      // Set a multiplier of three for the test.
+      'multiplier' => 3,
+    ]);
+    $this->assertToolkitOperationsCalled(['scale']);
+
+    // Check the parameters.
+    $calls = $this->imageTestGetAllCalls();
+    $this->assertEqual($calls['scale'][0][0], $this->image->getWidth() * 3, 'Width is triple the original size.');
+    $this->assertEqual($calls['scale'][0][1], $this->image->getHeight() * 3, 'Height is triple the original size.');
+  }
+
+  /**
+   * Asserts the effect processing of an image effect plugin.
+   *
+   * @param string $effect_name
+   *   The name of the image effect to test.
+   * @param array $data
+   *   The data to pass to the image effect.
+   *
+   * @return bool
+   *   TRUE if the assertion succeeded, FALSE otherwise.
+   */
+  protected function assertImageEffect($effect_name, array $data) {
+    /** @var \Drupal\image\ImageEffectInterface $effect */
+    $effect = $this->manager->createInstance($effect_name, ['data' => $data]);
+    return $this->assertTrue($effect->applyEffect($this->image), 'Function returned the expected value.');
+  }
+
+}