class BlockFormTest

class BlockFormTest extends UnitTestCase {

  /**
   * The condition plugin manager.
   *
   * @var \Drupal\Core\Executable\ExecutableManagerInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $conditionManager;

  /**
   * The block storage.
   *
   * @var \Drupal\Core\Entity\EntityStorageInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $storage;

  /**
   * The language manager service.
   *
   * @var \Drupal\Core\Language\LanguageManagerInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $language;

  /**
   * The theme handler.
   *
   * @var \Drupal\Core\Extension\ThemeHandlerInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $themeHandler;

  /**
   * The theme manager service.
   *
   * @var \Drupal\Core\Theme\ThemeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $themeManager;

  /**
   * The entity type manager.
   *
   * @var \Drupal\Core\Entity\EntityTypeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $entityTypeManager;

  /**
   * The mocked context handler.
   *
   * @var \Drupal\Core\Plugin\Context\ContextHandlerInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $contextHandler;

  /**
   * The mocked context repository.
   *
   * @var \Drupal\Core\Plugin\Context\ContextRepositoryInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $contextRepository;

  /**
   * The plugin form manager.
   *
   * @var \Drupal\Core\Plugin\PluginFormFactoryInterface|\Prophecy\Prophecy\ProphecyInterface
   */
  protected $pluginFormFactory;

  /**
   * The block repository.
   *
   * @var \Drupal\block\BlockRepositoryInterface
   */
  protected $blockRepository;

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->conditionManager = $this
      ->createMock('Drupal\\Core\\Executable\\ExecutableManagerInterface');
    $this->language = $this
      ->createMock('Drupal\\Core\\Language\\LanguageManagerInterface');
    $this->contextRepository = $this
      ->createMock('Drupal\\Core\\Plugin\\Context\\ContextRepositoryInterface');
    $this->entityTypeManager = $this
      ->createMock('Drupal\\Core\\Entity\\EntityTypeManagerInterface');
    $this->storage = $this
      ->createMock('Drupal\\Core\\Config\\Entity\\ConfigEntityStorageInterface');
    $this->themeHandler = $this
      ->createMock('Drupal\\Core\\Extension\\ThemeHandlerInterface');
    $this->entityTypeManager
      ->expects($this
      ->any())
      ->method('getStorage')
      ->willReturn($this->storage);
    $this->pluginFormFactory = $this
      ->prophesize(PluginFormFactoryInterface::class);
    $this->themeManager = $this
      ->createMock('\\Drupal\\Core\\Theme\\ThemeManagerInterface');
    $this->contextHandler = $this
      ->createMock('Drupal\\Core\\Plugin\\Context\\ContextHandlerInterface');
    $this->blockRepository = new BlockRepository($this->entityTypeManager, $this->themeManager, $this->contextHandler);
  }

  /**
   * Mocks a block with a block plugin.
   *
   * @param string $machine_name
   *   The machine name of the block plugin.
   *
   * @return \Drupal\block\BlockInterface|\PHPUnit\Framework\MockObject\MockObject
   *   The mocked block.
   */
  protected function getBlockMockWithMachineName($machine_name) {
    $plugin = $this
      ->getMockBuilder(BlockBase::class)
      ->disableOriginalConstructor()
      ->getMock();
    $plugin
      ->expects($this
      ->any())
      ->method('getMachineNameSuggestion')
      ->willReturn($machine_name);
    $block = $this
      ->getMockBuilder(Block::class)
      ->disableOriginalConstructor()
      ->getMock();
    $block
      ->expects($this
      ->any())
      ->method('getPlugin')
      ->willReturn($plugin);
    return $block;
  }

  /**
   * Tests the unique machine name generator.
   *
   * @see \Drupal\block\BlockForm::getUniqueMachineName()
   */
  public function testGetUniqueMachineName() {
    $blocks = [];
    $blocks['test'] = $this
      ->getBlockMockWithMachineName('test');
    $blocks['other_test'] = $this
      ->getBlockMockWithMachineName('other_test');
    $blocks['other_test_1'] = $this
      ->getBlockMockWithMachineName('other_test');
    $blocks['other_test_2'] = $this
      ->getBlockMockWithMachineName('other_test');
    $query = $this
      ->createMock('Drupal\\Core\\Entity\\Query\\QueryInterface');
    $query
      ->expects($this
      ->exactly(5))
      ->method('condition')
      ->willReturn($query);
    $query
      ->expects($this
      ->exactly(5))
      ->method('execute')
      ->willReturn([
      'test',
      'other_test',
      'other_test_1',
      'other_test_2',
    ]);
    $this->storage
      ->expects($this
      ->exactly(5))
      ->method('getQuery')
      ->willReturn($query);
    $block_form_controller = new BlockForm($this->entityTypeManager, $this->conditionManager, $this->contextRepository, $this->language, $this->themeHandler, $this->pluginFormFactory
      ->reveal(), $this->blockRepository);

    // Ensure that the block with just one other instance gets
    // the next available name suggestion.
    $this
      ->assertEquals('test_2', $block_form_controller
      ->getUniqueMachineName($blocks['test']));

    // Ensure that the block with already three instances (_0, _1, _2) gets the
    // 4th available name.
    $this
      ->assertEquals('other_test_3', $block_form_controller
      ->getUniqueMachineName($blocks['other_test']));
    $this
      ->assertEquals('other_test_3', $block_form_controller
      ->getUniqueMachineName($blocks['other_test_1']));
    $this
      ->assertEquals('other_test_3', $block_form_controller
      ->getUniqueMachineName($blocks['other_test_2']));

    // Ensure that a block without an instance yet gets the suggestion as
    // unique machine name.
    $last_block = $this
      ->getBlockMockWithMachineName('last_test');
    $this
      ->assertEquals('last_test', $block_form_controller
      ->getUniqueMachineName($last_block));
  }

}