class SeparatorTranslationTest

class SeparatorTranslationTest extends KernelTestBase {
    
    /**
     * A field storage to use in this test class.
     *
     * @var \Drupal\field\Entity\FieldStorageConfig
     */
    protected $fieldStorage;
    
    /**
     * The field used in this test class.
     *
     * @var \Drupal\field\Entity\FieldConfig
     */
    protected $field;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'datetime',
        'datetime_range',
        'entity_test',
        'field',
        'language',
        'system',
        'user',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installEntitySchema('entity_test');
        $this->installEntitySchema('user');
        $this->installConfig([
            'system',
        ]);
        $this->installSchema('system', [
            'sequences',
        ]);
        // Add a datetime range field.
        $this->fieldStorage = FieldStorageConfig::create([
            'field_name' => mb_strtolower($this->randomMachineName()),
            'entity_type' => 'entity_test',
            'type' => 'daterange',
            'settings' => [
                'datetime_type' => DateTimeItem::DATETIME_TYPE_DATE,
            ],
        ]);
        $this->fieldStorage
            ->save();
        $this->field = FieldConfig::create([
            'field_storage' => $this->fieldStorage,
            'bundle' => 'entity_test',
            'required' => TRUE,
        ]);
        $this->field
            ->save();
        $display_options = [
            'type' => 'daterange_default',
            'label' => 'hidden',
            'settings' => [
                'format_type' => 'fallback',
                'separator' => 'UNTRANSLATED',
            ],
        ];
        EntityViewDisplay::create([
            'targetEntityType' => $this->field
                ->getTargetEntityTypeId(),
            'bundle' => $this->field
                ->getTargetBundle(),
            'mode' => 'default',
            'status' => TRUE,
        ])
            ->setComponent($this->fieldStorage
            ->getName(), $display_options)
            ->save();
    }
    
    /**
     * Tests the translation of the range separator.
     */
    public function testSeparatorTranslation() {
        // Create an entity.
        $entity = EntityTest::create([
            'name' => $this->randomString(),
            $this->fieldStorage
                ->getName() => [
                'value' => '2016-09-20',
                'end_value' => '2016-09-21',
            ],
        ]);
        // Verify the untranslated separator.
        $display = EntityViewDisplay::collectRenderDisplay($entity, 'default');
        $build = $display->build($entity);
        $output = $this->container
            ->get('renderer')
            ->renderRoot($build);
        $this->assertStringContainsString('UNTRANSLATED', (string) $output);
        // Translate the separator.
        ConfigurableLanguage::createFromLangcode('nl')->save();
        
        /** @var \Drupal\language\ConfigurableLanguageManagerInterface $language_manager */
        $language_manager = $this->container
            ->get('language_manager');
        $language_manager->getLanguageConfigOverride('nl', 'core.entity_view_display.entity_test.entity_test.default')
            ->set('content.' . $this->fieldStorage
            ->getName() . '.settings.separator', 'NL_TRANSLATED!')
            ->save();
        $this->container
            ->get('language.config_factory_override')
            ->setLanguage(new Language([
            'id' => 'nl',
        ]));
        $this->container
            ->get('cache_tags.invalidator')
            ->invalidateTags($entity->getCacheTags());
        $display = EntityViewDisplay::collectRenderDisplay($entity, 'default');
        $build = $display->build($entity);
        $output = $this->container
            ->get('renderer')
            ->renderRoot($build);
        $this->assertStringContainsString('NL_TRANSLATED!', (string) $output);
    }

}