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diff --git a/web/modules/contrib/blazy/tests/src/Unit/BlazyManagerUnitTest.php b/web/modules/contrib/blazy/tests/src/Unit/BlazyManagerUnitTest.php
new file mode 100644
index 000000000..b60841a71
--- /dev/null
+++ b/web/modules/contrib/blazy/tests/src/Unit/BlazyManagerUnitTest.php
@@ -0,0 +1,291 @@
+<?php
+
+namespace Drupal\Tests\blazy\Unit;
+
+use Drupal\Tests\UnitTestCase;
+use Drupal\Tests\blazy\Traits\BlazyUnitTestTrait;
+use Drupal\Tests\blazy\Traits\BlazyManagerUnitTestTrait;
+
+/**
+ * @coversDefaultClass \Drupal\blazy\BlazyManager
+ *
+ * @group blazy
+ */
+class BlazyManagerUnitTest extends UnitTestCase {
+
+  use BlazyUnitTestTrait;
+  use BlazyManagerUnitTestTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp() {
+    parent::setUp();
+
+    $this->setUpUnitServices();
+    $this->setUpUnitContainer();
+    $this->setUpUnitImages();
+
+    $this->blazyManager->setLightboxes('blazy_test');
+  }
+
+  /**
+   * Tests cases for various methods.
+   *
+   * @covers ::getEntityTypeManager
+   * @covers ::getModuleHandler
+   * @covers ::getRenderer
+   * @covers ::getCache
+   * @covers ::getConfigFactory
+   */
+  public function testBlazyManagerServiceInstances() {
+    $this->assertInstanceOf('\Drupal\Core\Entity\EntityTypeManagerInterface', $this->blazyManager->getEntityTypeManager());
+    $this->assertInstanceOf('\Drupal\Core\Extension\ModuleHandlerInterface', $this->blazyManager->getModuleHandler());
+    $this->assertInstanceOf('\Drupal\Core\Render\RendererInterface', $this->blazyManager->getRenderer());
+    $this->assertInstanceOf('\Drupal\Core\Config\ConfigFactoryInterface', $this->blazyManager->getConfigFactory());
+    $this->assertInstanceOf('\Drupal\Core\Cache\CacheBackendInterface', $this->blazyManager->getCache());
+  }
+
+  /**
+   * Tests cases for config.
+   *
+   * @covers ::configLoad
+   */
+  public function testConfigLoad() {
+    $blazy = $this->blazyManager->configLoad('blazy');
+    $this->assertArrayHasKey('loadInvisible', $blazy);
+
+    $admin_css = $this->blazyManager->configLoad('admin_css', 'blazy.settings');
+    $this->assertTrue($admin_css, 'Blazy admin CSS is enabled by default.');
+
+    $responsive_image = $this->blazyManager->configLoad('responsive_image');
+    $this->assertTrue($responsive_image, 'Responsive image was disabled by default, yet enabled now.');
+  }
+
+  /**
+   * Tests cases for config.
+   *
+   * @covers ::entityLoad
+   * @covers ::entityLoadMultiple
+   */
+  public function testEntityLoadImageStyle() {
+    $styles = $this->setUpImageStyle();
+
+    $ids = array_keys($styles);
+    $multiple = $this->blazyManager->entityLoadMultiple('image_style', $ids);
+    $this->assertArrayHasKey('large', $multiple);
+
+    $expected = $this->blazyManager->entityLoad('large', 'image_style');
+    $this->assertEquals($expected, $multiple['large']);
+  }
+
+  /**
+   * Tests cases for config.
+   *
+   * @covers ::entityLoad
+   * @covers ::entityLoadMultiple
+   */
+  public function testEntityLoadResponsiveImageStyle() {
+    $styles = $this->setUpResponsiveImageStyle();
+
+    $ids = array_keys($styles);
+    $multiple = $this->blazyManager->entityLoadMultiple('responsive_image_style', $ids);
+    $this->assertArrayHasKey('blazy_picture_test', $multiple);
+
+    $expected = $this->blazyManager->entityLoad('blazy_picture_test', 'responsive_image_style');
+    $this->assertEquals($expected, $multiple['blazy_picture_test']);
+  }
+
+  /**
+   * Test \Drupal\blazy\BlazyManager::cleanUpBreakpoints().
+   *
+   * @covers ::cleanUpBreakpoints
+   * @dataProvider providerTestCleanUpBreakpoints
+   */
+  public function testCleanUpBreakpoints($breakpoints, $expected_breakpoints, $blazy, $expected_blazy) {
+    $settings['blazy'] = $blazy;
+    $settings['breakpoints'] = $breakpoints;
+
+    $this->blazyManager->cleanUpBreakpoints($settings);
+    $this->assertEquals($expected_breakpoints, $settings['breakpoints']);
+
+    // Verify that Blazy is activated by breakpoints.
+    $this->assertEquals($expected_blazy, $settings['blazy']);
+  }
+
+  /**
+   * Provider for ::testCleanUpBreakpoints().
+   */
+  public function providerTestCleanUpBreakpoints() {
+    return [
+      'empty' => [
+        [],
+        [],
+        FALSE,
+        FALSE,
+      ],
+      'not so empty' => [
+        $this->getEmptyBreakpoints(),
+        [],
+        FALSE,
+        FALSE,
+      ],
+      'mixed empty' => [
+        $this->getDataBreakpoints(),
+        $this->getDataBreakpoints(TRUE),
+        FALSE,
+        TRUE,
+      ],
+      'mixed empty blazy enabled first' => [
+        $this->getDataBreakpoints(),
+        $this->getDataBreakpoints(TRUE),
+        FALSE,
+        TRUE,
+      ],
+    ];
+  }
+
+  /**
+   * Tests for \Drupal\blazy\BlazyManager::preRenderImage().
+   *
+   * @covers ::getImage
+   * @covers ::preRenderImage
+   * @dataProvider providerTestPreRenderImage
+   */
+  public function testPreRenderImage($item, $uri, $content, $expected_image, $expected_render) {
+    $build = [];
+
+    $build['item'] = $item ? $this->testItem : [];
+    $build['content'] = $content;
+    $build['settings']['uri'] = $uri;
+
+    if ($item) {
+      $build['item']->_attributes['data-blazy-test'] = TRUE;
+    }
+
+    $image = $this->blazyManager->getImage($build);
+
+    $build_image['#build']['settings'] = array_merge($this->getCacheMetaData(), $build['settings']);
+    $build_image['#build']['item'] = $build['item'];
+
+    $pre_render = $this->blazyManager->preRenderImage($build_image);
+
+    $check_image = !$expected_image ? empty($image) : !empty($image);
+    $this->assertTrue($check_image);
+
+    $check_pre_render = !$expected_render ? TRUE : !empty($pre_render);
+    $this->assertTrue($check_pre_render);
+  }
+
+  /**
+   * Provide test cases for ::testPreRenderImage().
+   *
+   * @return array
+   *   An array of tested data.
+   */
+  public function providerTestPreRenderImage() {
+    $data[] = [
+      FALSE,
+      '',
+      '',
+      FALSE,
+      FALSE,
+    ];
+    $data[] = [
+      TRUE,
+      '',
+      '',
+      TRUE,
+      TRUE,
+    ];
+    $data[] = [
+      TRUE,
+      'core/misc/druplicon.png',
+      '',
+      TRUE,
+      TRUE,
+    ];
+    $data[] = [
+      TRUE,
+      'core/misc/druplicon.png',
+      '<iframe src="//www.youtube.com/watch?v=E03HFA923kw" class="b-lazy"></iframe>',
+      TRUE,
+      FALSE,
+    ];
+
+    return $data;
+  }
+
+  /**
+   * Tests cases for attachments.
+   *
+   * @covers ::attach
+   * @depends testConfigLoad
+   */
+  public function testAttach() {
+    $attach = [
+      'blazy'        => TRUE,
+      'grid'         => 0,
+      'media'        => TRUE,
+      'media_switch' => 'media',
+      'ratio'        => 'fluid',
+      'style'        => 'column',
+    ];
+
+    $attachments = $this->blazyManager->attach($attach);
+
+    $this->assertArrayHasKey('library', $attachments);
+    $this->assertArrayHasKey('blazy', $attachments['drupalSettings']);
+
+    $this->assertContains('blazy/media', $attachments['library']);
+    $this->assertContains('blazy/ratio', $attachments['library']);
+  }
+
+  /**
+   * Tests cases for lightboxes.
+   *
+   * @covers ::getLightboxes
+   * @covers ::setLightboxes
+   */
+  public function testGetLightboxes() {
+    $lightboxes = $this->blazyManager->getLightboxes();
+
+    $this->assertNotContains('nixbox', $lightboxes);
+  }
+
+}
+
+namespace Drupal\blazy;
+
+if (!function_exists('blazy_test_theme')) {
+
+  /**
+   * Dummy function.
+   */
+  function blazy_test_theme() {
+    // Empty block to satisfy coder.
+  }
+
+}
+
+if (!function_exists('colorbox_theme')) {
+
+  /**
+   * Dummy function.
+   */
+  function colorbox_theme() {
+    // Empty block to satisfy coder.
+  }
+
+}
+
+if (!function_exists('photobox_theme')) {
+
+  /**
+   * Dummy function.
+   */
+  function photobox_theme() {
+    // Empty block to satisfy coder.
+  }
+
+}