class TimestampFormatterTest

class TimestampFormatterTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'field',
        'text',
        'entity_test',
        'user',
    ];
    
    /**
     * @var string
     */
    protected $entityType;
    
    /**
     * @var string
     */
    protected $bundle;
    
    /**
     * @var string
     */
    protected $fieldName;
    
    /**
     * @var \Drupal\Core\Entity\Display\EntityViewDisplayInterface
     */
    protected $display;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installConfig([
            'system',
        ]);
        $this->installConfig([
            'field',
        ]);
        $this->installEntitySchema('entity_test');
        $this->entityType = 'entity_test';
        $this->bundle = $this->entityType;
        $this->fieldName = mb_strtolower($this->randomMachineName());
        $field_storage = FieldStorageConfig::create([
            'field_name' => $this->fieldName,
            'entity_type' => $this->entityType,
            'type' => 'timestamp',
        ]);
        $field_storage->save();
        $instance = FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => $this->bundle,
            'label' => $this->randomMachineName(),
        ]);
        $instance->save();
        $this->display = \Drupal::service('entity_display.repository')->getViewDisplay($this->entityType, $this->bundle)
            ->setComponent($this->fieldName, [
            'type' => 'boolean',
            'settings' => [],
        ]);
        $this->display
            ->save();
    }
    
    /**
     * Renders fields of a given entity with a given display.
     *
     * @param \Drupal\Core\Entity\FieldableEntityInterface $entity
     *   The entity object with attached fields to render.
     * @param \Drupal\Core\Entity\Display\EntityViewDisplayInterface $display
     *   The display to render the fields in.
     *
     * @return string
     *   The rendered entity fields.
     */
    protected function renderEntityFields(FieldableEntityInterface $entity, EntityViewDisplayInterface $display) {
        $content = $display->build($entity);
        $content = $this->render($content);
        return $content;
    }
    
    /**
     * Tests TimestampFormatter.
     */
    public function testTimestampFormatter() {
        $data = [];
        // Test standard formats.
        $date_formats = array_keys(\Drupal::entityTypeManager()->getStorage('date_format')
            ->loadMultiple());
        foreach ($date_formats as $date_format) {
            $data[] = [
                'date_format' => $date_format,
                'custom_date_format' => '',
                'timezone' => '',
            ];
        }
        $data[] = [
            'date_format' => 'custom',
            'custom_date_format' => 'r',
            'timezone' => '',
        ];
        $data[] = [
            'date_format' => 'custom',
            'custom_date_format' => 'e',
            'timezone' => 'Asia/Tokyo',
        ];
        foreach ($data as $settings) {
            [
                $date_format,
                $custom_date_format,
                $timezone,
            ] = array_values($settings);
            if (empty($timezone)) {
                $timezone = NULL;
            }
            $value = REQUEST_TIME - 87654321;
            $expected = \Drupal::service('date.formatter')->format($value, $date_format, $custom_date_format, $timezone);
            $component = $this->display
                ->getComponent($this->fieldName);
            $component['type'] = 'timestamp';
            $component['settings'] = $settings;
            $this->display
                ->setComponent($this->fieldName, $component);
            $entity = EntityTest::create([]);
            $entity->{$this->fieldName}->value = $value;
            $this->renderEntityFields($entity, $this->display);
            $this->assertRaw($expected);
        }
    }
    
    /**
     * Tests TimestampAgoFormatter.
     */
    public function testTimestampAgoFormatter() {
        $data = [];
        foreach ([
            1,
            2,
            3,
            4,
            5,
            6,
        ] as $granularity) {
            $data[] = [
                'future_format' => '@interval hence',
                'past_format' => '@interval ago',
                'granularity' => $granularity,
            ];
        }
        foreach ($data as $settings) {
            $future_format = $settings['future_format'];
            $past_format = $settings['past_format'];
            $granularity = $settings['granularity'];
            $request_time = \Drupal::requestStack()->getCurrentRequest()->server
                ->get('REQUEST_TIME');
            // Test a timestamp in the past
            $value = $request_time - 87654321;
            $expected = new FormattableMarkup($past_format, [
                '@interval' => \Drupal::service('date.formatter')->formatTimeDiffSince($value, [
                    'granularity' => $granularity,
                ]),
            ]);
            $component = $this->display
                ->getComponent($this->fieldName);
            $component['type'] = 'timestamp_ago';
            $component['settings'] = $settings;
            $this->display
                ->setComponent($this->fieldName, $component);
            $entity = EntityTest::create([]);
            $entity->{$this->fieldName}->value = $value;
            $this->renderEntityFields($entity, $this->display);
            $this->assertRaw($expected);
            // Test a timestamp in the future
            $value = $request_time + 87654321;
            $expected = new FormattableMarkup($future_format, [
                '@interval' => \Drupal::service('date.formatter')->formatTimeDiffUntil($value, [
                    'granularity' => $granularity,
                ]),
            ]);
            $component = $this->display
                ->getComponent($this->fieldName);
            $component['type'] = 'timestamp_ago';
            $component['settings'] = $settings;
            $this->display
                ->setComponent($this->fieldName, $component);
            $entity = EntityTest::create([]);
            $entity->{$this->fieldName}->value = $value;
            $this->renderEntityFields($entity, $this->display);
            $this->assertRaw($expected);
        }
    }

}