class ForumBlockTest

class ForumBlockTest extends BrowserTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'forum',
    'block',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * A user with various administrative privileges.
   */
  protected $adminUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Create users.
    $this->adminUser = $this->drupalCreateUser([
      'access administration pages',
      'administer blocks',
      'administer nodes',
      'create forum content',
      'post comments',
      'skip comment approval',
    ]);
  }
  
  /**
   * Tests the "New forum topics" block.
   */
  public function testNewForumTopicsBlock() {
    $this->drupalLogin($this->adminUser);
    // Enable the new forum topics block.
    $block = $this->drupalPlaceBlock('forum_new_block');
    $this->drupalGet('');
    // Create 5 forum topics.
    $topics = $this->createForumTopics();
    $this->assertSession()
      ->linkExists('More', 0, 'New forum topics block has a "more"-link.');
    $this->assertSession()
      ->linkByHrefExists('forum', 0, 'New forum topics block has a "more"-link.');
    // We expect all 5 forum topics to appear in the "New forum topics" block.
    foreach ($topics as $topic) {
      $this->assertSession()
        ->linkExists($topic, 0, new FormattableMarkup('Forum topic @topic found in the "New forum topics" block.', [
        '@topic' => $topic,
      ]));
    }
    // Configure the new forum topics block to only show 2 topics.
    $block->getPlugin()
      ->setConfigurationValue('block_count', 2);
    $block->save();
    $this->drupalGet('');
    // We expect only the 2 most recent forum topics to appear in the "New forum
    // topics" block.
    for ($index = 0; $index < 5; $index++) {
      if (in_array($index, [
        3,
        4,
      ])) {
        $this->assertSession()
          ->linkExists($topics[$index], 0, new FormattableMarkup('Forum topic @topic found in the "New forum topics" block.', [
          '@topic' => $topics[$index],
        ]));
      }
      else {
        $this->assertSession()
          ->pageTextNotContains($topics[$index]);
      }
    }
  }
  
  /**
   * Tests the "Active forum topics" block.
   */
  public function testActiveForumTopicsBlock() {
    $this->drupalLogin($this->adminUser);
    // Create 10 forum topics.
    $topics = $this->createForumTopics(10);
    // Comment on the first 5 topics.
    $date = new DrupalDateTime();
    for ($index = 0; $index < 5; $index++) {
      // Get the node from the topic title.
      $node = $this->drupalGetNodeByTitle($topics[$index]);
      $date->modify('+1 minute');
      $comment = Comment::create([
        'entity_id' => $node->id(),
        'field_name' => 'comment_forum',
        'entity_type' => 'node',
        'node_type' => 'node_type_' . $node->bundle(),
        'subject' => $this->randomString(20),
        'comment_body' => $this->randomString(256),
        'created' => $date->getTimestamp(),
      ]);
      $comment->save();
    }
    // Enable the block.
    $block = $this->drupalPlaceBlock('forum_active_block');
    $this->drupalGet('');
    $this->assertSession()
      ->linkExists('More', 0, 'Active forum topics block has a "more"-link.');
    $this->assertSession()
      ->linkByHrefExists('forum', 0, 'Active forum topics block has a "more"-link.');
    // We expect the first 5 forum topics to appear in the "Active forum topics"
    // block.
    $this->drupalGet('<front>');
    for ($index = 0; $index < 10; $index++) {
      if ($index < 5) {
        $this->assertSession()
          ->linkExists($topics[$index], 0, new FormattableMarkup('Forum topic @topic found in the "Active forum topics" block.', [
          '@topic' => $topics[$index],
        ]));
      }
      else {
        $this->assertSession()
          ->pageTextNotContains($topics[$index]);
      }
    }
    // Configure the active forum block to only show 2 topics.
    $block->getPlugin()
      ->setConfigurationValue('block_count', 2);
    $block->save();
    $this->drupalGet('');
    // We expect only the 2 forum topics with most recent comments to appear in
    // the "Active forum topics" block.
    for ($index = 0; $index < 10; $index++) {
      if (in_array($index, [
        3,
        4,
      ])) {
        $this->assertSession()
          ->linkExists($topics[$index], 0, 'Forum topic found in the "Active forum topics" block.');
      }
      else {
        $this->assertSession()
          ->pageTextNotContains($topics[$index]);
      }
    }
  }
  
  /**
   * Creates a forum topic.
   *
   * @return string
   *   The title of the newly generated topic.
   */
  protected function createForumTopics($count = 5) {
    $topics = [];
    $date = new DrupalDateTime();
    $date->modify('-24 hours');
    for ($index = 0; $index < $count; $index++) {
      // Generate a random subject/body.
      $title = $this->randomMachineName(20);
      $body = $this->randomMachineName(200);
      // Forum posts are ordered by timestamp, so force a unique timestamp by
      // changing the date.
      $date->modify('+1 minute');
      $edit = [
        'title[0][value]' => $title,
        'body[0][value]' => $body,
        // Forum posts are ordered by timestamp, so force a unique timestamp by
        // adding the index.
'created[0][value][date]' => $date->format('Y-m-d'),
        'created[0][value][time]' => $date->format('H:i:s'),
      ];
      // Create the forum topic, preselecting the forum ID via a URL parameter.
      $this->drupalGet('node/add/forum', [
        'query' => [
          'forum_id' => 1,
        ],
      ]);
      $this->submitForm($edit, 'Save');
      $topics[] = $title;
    }
    return $topics;
  }

}