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 = $this->createRequest('filename*="UTF-8 \' \' example.txt"');
        ContentDispositionFilenameParser::parseFilename($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;
    }

}