class ContentDispositionFilenameParserTest

class ContentDispositionFilenameParserTest extends UnitTestCase {
  
  /**
   * Tests the parseFilename() method.
   *
   * @covers ::parseFilename
   */
  public function testParseFilenameSuccess() : void {
    $request = $this->createRequest('filename="test.txt"');
    $filename = ContentDispositionFilenameParser::parseFilename($request);
    $this->assertEquals('test.txt', $filename);
  }
  
  /**
   * @covers ::parseFilename
   * @dataProvider invalidHeaderProvider
   */
  public function testParseFilenameInvalid(string|bool $contentDisposition) : void {
    $this->expectException(BadRequestHttpException::class);
    $this->expectExceptionMessage('No filename found in "Content-Disposition" header. A file name in the format "filename=FILENAME" must be provided.');
    $request = $this->createRequest($contentDisposition);
    ContentDispositionFilenameParser::parseFilename($request);
  }
  
  /**
   * @covers ::parseFilename
   */
  public function testParseFilenameMissing() : void {
    $this->expectException(BadRequestHttpException::class);
    $this->expectExceptionMessage('"Content-Disposition" header is required. A file name in the format "filename=FILENAME" must be provided.');
    $request = new Request();
    ContentDispositionFilenameParser::parseFilename($request);
  }
  
  /**
   * @covers ::parseFilename
   */
  public function testParseFilenameExtended() : void {
    $this->expectException(BadRequestHttpException::class);
    $this->expectExceptionMessage('The extended "filename*" format is currently not supported in the "Content-Disposition" header.');
    $request = $this->createRequest('filename*="UTF-8 \' \' example.txt"');
    $filename = ContentDispositionFilenameParser::parseFilename($request);
  }
  
  /**
   * A data provider for invalid headers.
   */
  public static function invalidHeaderProvider() : array {
    return [
      'multiple' => [
        'file; filename=""',
      ],
      'empty' => [
        'filename=""',
      ],
      'bad key' => [
        'not_a_filename="example.txt"',
      ],
    ];
  }
  
  /**
   * Creates a request with the given content-disposition header.
   */
  protected function createRequest(string $contentDisposition) : Request {
    $request = new Request();
    $request->headers
      ->set('Content-Disposition', $contentDisposition);
    return $request;
  }

}