TimestampItemTest.php

<?php

namespace Drupal\Tests\field\Kernel\Timestamp;

use Drupal\Core\Field\FieldItemInterface;
use Drupal\Core\Field\FieldItemListInterface;
use Drupal\entity_test\Entity\EntityTest;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\Tests\field\Kernel\FieldKernelTestBase;

/**
 * Tests the timestamp fields.
 *
 * @group field
 */
class TimestampItemTest extends FieldKernelTestBase {
    
    /**
     * 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 function setUp() : void {
        parent::setUp();
        // Create a field with settings to validate.
        $this->fieldStorage = FieldStorageConfig::create([
            'field_name' => 'field_timestamp',
            'type' => 'timestamp',
            'entity_type' => 'entity_test',
        ]);
        $this->fieldStorage
            ->save();
        $this->field = FieldConfig::create([
            'field_storage' => $this->fieldStorage,
            'bundle' => 'entity_test',
        ]);
        $this->field
            ->save();
    }
    
    /**
     * Tests using entity fields of the datetime field type.
     */
    public function testDateTime() {
        // Verify entity creation.
        $entity = EntityTest::create();
        $value = 1488914208;
        $entity->field_timestamp = $value;
        $entity->name->value = $this->randomMachineName();
        $this->entityValidateAndSave($entity);
        // Verify entity has been created properly.
        $id = $entity->id();
        $entity = EntityTest::load($id);
        $this->assertInstanceOf(FieldItemListInterface::class, $entity->field_timestamp);
        $this->assertInstanceOf(FieldItemInterface::class, $entity->field_timestamp[0]);
        $this->assertEquals($entity->field_timestamp->value, $value);
        $this->assertEquals($entity->field_timestamp[0]->value, $value);
        // Verify changing the date value.
        $new_value = 1488914000;
        $entity->field_timestamp->value = $new_value;
        $this->assertEquals($entity->field_timestamp->value, $new_value);
        // Read changed entity and assert changed values.
        $this->entityValidateAndSave($entity);
        $entity = EntityTest::load($id);
        $this->assertEquals($entity->field_timestamp->value, $new_value);
        // Test sample item generation.
        $entity = EntityTest::create();
        $entity->field_timestamp
            ->generateSampleItems();
        $this->entityValidateAndSave($entity);
        // Ensure there is sample value a generated for the field.
        $this->assertNotNull($entity->field_timestamp->value);
    }

}