UpdateLobTest.php

<?php

declare (strict_types=1);
namespace Drupal\KernelTests\Core\Database;


/**
 * Tests the Update query builder with LOB fields.
 *
 * @group Database
 */
class UpdateLobTest extends DatabaseTestBase {
    
    /**
     * Confirms that we can update a blob column.
     */
    public function testUpdateOneBlob() : void {
        $data = "This is\x00a test.";
        $this->assertSame(15, strlen($data), 'Test data contains a NULL.');
        $id = $this->connection
            ->insert('test_one_blob')
            ->fields([
            'blob1' => $data,
        ])
            ->execute();
        $data .= $data;
        $this->connection
            ->update('test_one_blob')
            ->condition('id', $id)
            ->fields([
            'blob1' => $data,
        ])
            ->execute();
        $r = $this->connection
            ->query('SELECT * FROM {test_one_blob} WHERE [id] = :id', [
            ':id' => $id,
        ])
            ->fetchAssoc();
        $this->assertSame($data, $r['blob1'], "Can update a blob: id {$id}, " . serialize($r));
    }
    
    /**
     * Tests that we can update a blob column to null.
     */
    public function testUpdateNullBlob() : void {
        $id = $this->connection
            ->insert('test_one_blob')
            ->fields([
            'blob1' => 'test',
        ])
            ->execute();
        $r = $this->connection
            ->query('SELECT * FROM {test_one_blob} WHERE [id] = :id', [
            ':id' => $id,
        ])
            ->fetchAssoc();
        $this->assertSame('test', $r['blob1']);
        $this->connection
            ->update('test_one_blob')
            ->fields([
            'blob1' => NULL,
        ])
            ->condition('id', $id)
            ->execute();
        $r = $this->connection
            ->query('SELECT * FROM {test_one_blob} WHERE [id] = :id', [
            ':id' => $id,
        ])
            ->fetchAssoc();
        $this->assertNull($r['blob1']);
    }
    
    /**
     * Confirms that we can update two blob columns in the same table.
     */
    public function testUpdateMultipleBlob() : void {
        $id = $this->connection
            ->insert('test_two_blobs')
            ->fields([
            'blob1' => 'This is',
            'blob2' => 'a test',
        ])
            ->execute();
        $this->connection
            ->update('test_two_blobs')
            ->condition('id', $id)
            ->fields([
            'blob1' => 'and so',
            'blob2' => 'is this',
        ])
            ->execute();
        $r = $this->connection
            ->query('SELECT * FROM {test_two_blobs} WHERE [id] = :id', [
            ':id' => $id,
        ])
            ->fetchAssoc();
        $this->assertSame('and so', $r['blob1']);
        $this->assertSame('is this', $r['blob2']);
    }

}