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

}