class UpdateLobTest

class UpdateLobTest extends DatabaseTestBase {
  
  /**
   * Confirms that we can update a blob column.
   */
  public function testUpdateOneBlob() {
    $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'], new FormattableMarkup('Can update a blob: id @id, @data.', [
      '@id' => $id,
      '@data' => serialize($r),
    ]));
  }
  
  /**
   * Tests that we can update a blob column to null.
   */
  public function testUpdateNullBlob() {
    $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() {
    $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']);
  }

}