CacheFactoryTest.php

<?php

namespace Drupal\Tests\Core\Cache;

use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\Cache\CacheFactory;
use Drupal\Core\Site\Settings;
use Drupal\Tests\UnitTestCase;

/**
 * @coversDefaultClass \Drupal\Core\Cache\CacheFactory
 * @group Cache
 */
class CacheFactoryTest extends UnitTestCase {
    
    /**
     * Tests that the cache factory falls back to the built-in default service.
     *
     * @covers ::__construct
     * @covers ::get
     */
    public function testCacheFactoryWithDefaultSettings() {
        $settings = new Settings([]);
        $cache_factory = new CacheFactory($settings);
        $container = new ContainerBuilder();
        $cache_factory->setContainer($container);
        $builtin_default_backend_factory = $this->createMock('\\Drupal\\Core\\Cache\\CacheFactoryInterface');
        $container->set('cache.backend.database', $builtin_default_backend_factory);
        $render_bin = $this->createMock('\\Drupal\\Core\\Cache\\CacheBackendInterface');
        $builtin_default_backend_factory->expects($this->once())
            ->method('get')
            ->with('render')
            ->willReturn($render_bin);
        $actual_bin = $cache_factory->get('render');
        $this->assertSame($render_bin, $actual_bin);
    }
    
    /**
     * Tests that the cache factory falls back to customized default service.
     *
     * @covers ::__construct
     * @covers ::get
     */
    public function testCacheFactoryWithCustomizedDefaultBackend() {
        $settings = new Settings([
            'cache' => [
                'default' => 'cache.backend.custom',
            ],
        ]);
        $cache_factory = new CacheFactory($settings);
        $container = new ContainerBuilder();
        $cache_factory->setContainer($container);
        $custom_default_backend_factory = $this->createMock('\\Drupal\\Core\\Cache\\CacheFactoryInterface');
        $container->set('cache.backend.custom', $custom_default_backend_factory);
        $render_bin = $this->createMock('\\Drupal\\Core\\Cache\\CacheBackendInterface');
        $custom_default_backend_factory->expects($this->once())
            ->method('get')
            ->with('render')
            ->willReturn($render_bin);
        $actual_bin = $cache_factory->get('render');
        $this->assertSame($render_bin, $actual_bin);
    }
    
    /**
     * Tests that the cache factory uses the correct default bin backend.
     *
     * @covers ::__construct
     * @covers ::get
     */
    public function testCacheFactoryWithDefaultBinBackend() {
        // Ensure the default bin backends are used before the configured default.
        $settings = new Settings([
            'cache' => [
                'default' => 'cache.backend.unused',
            ],
        ]);
        $default_bin_backends = [
            'render' => 'cache.backend.custom',
        ];
        $cache_factory = new CacheFactory($settings, $default_bin_backends);
        $container = new ContainerBuilder();
        $cache_factory->setContainer($container);
        $custom_default_backend_factory = $this->createMock('\\Drupal\\Core\\Cache\\CacheFactoryInterface');
        $container->set('cache.backend.custom', $custom_default_backend_factory);
        $render_bin = $this->createMock('\\Drupal\\Core\\Cache\\CacheBackendInterface');
        $custom_default_backend_factory->expects($this->once())
            ->method('get')
            ->with('render')
            ->willReturn($render_bin);
        $actual_bin = $cache_factory->get('render');
        $this->assertSame($render_bin, $actual_bin);
    }
    
    /**
     * Tests that the cache factory picks the correct per-bin service.
     *
     * @covers ::__construct
     * @covers ::get
     */
    public function testCacheFactoryWithSpecifiedPerBinBackend() {
        // Ensure the per-bin configuration is used before the configured default
        // and per-bin defaults.
        $settings = new Settings([
            'cache' => [
                'default' => 'cache.backend.unused',
                'bins' => [
                    'render' => 'cache.backend.custom',
                ],
            ],
        ]);
        $default_bin_backends = [
            'render' => 'cache.backend.unused',
        ];
        $cache_factory = new CacheFactory($settings, $default_bin_backends);
        $container = new ContainerBuilder();
        $cache_factory->setContainer($container);
        $custom_render_backend_factory = $this->createMock('\\Drupal\\Core\\Cache\\CacheFactoryInterface');
        $container->set('cache.backend.custom', $custom_render_backend_factory);
        $render_bin = $this->createMock('\\Drupal\\Core\\Cache\\CacheBackendInterface');
        $custom_render_backend_factory->expects($this->once())
            ->method('get')
            ->with('render')
            ->willReturn($render_bin);
        $actual_bin = $cache_factory->get('render');
        $this->assertSame($render_bin, $actual_bin);
    }

}