/**
* @param string $format
* @return string
*/
private function getMimeTypeFromFormat($format)
{
/** @var string $mimeType */
if (preg_match('{\\w+/\\w+}', $format)) {
$mimeType = $format;
} else {
$mimeType = Psr7\mimetype_from_extension($format);
}
if (empty($mimeType)) {
throw new \InvalidArgumentException('Invalid format provided; should either be a valid MIME type or file extension');
}
return $mimeType;
}
public function testDetermineMimetype()
{
$this->assertNull(Psr7\mimetype_from_extension('not-a-real-extension'));
$this->assertEquals('application/json', Psr7\mimetype_from_extension('json'));
$this->assertEquals('image/jpeg', Psr7\mimetype_from_filename('/tmp/images/IMG034821.JPEG'));
}
