fn arg_validation()

in mp4parse_capi/src/lib.rs [1583:1637]

• 46 lines of code
• 1 McCabe index (conditional complexity)

fn arg_validation() {
    unsafe {
        let rv = mp4parse_new(std::ptr::null(), std::ptr::null_mut());
        assert_eq!(rv, Mp4parseStatus::BadArg);

        // Passing a null Mp4parseIo is an error.
        let mut parser = std::ptr::null_mut();
        let rv = mp4parse_new(std::ptr::null(), &mut parser);
        assert_eq!(rv, Mp4parseStatus::BadArg);
        assert!(parser.is_null());

        let null_mut: *mut std::os::raw::c_void = std::ptr::null_mut();

        // Passing an Mp4parseIo with null members is an error.
        let io = Mp4parseIo {
            read: None,
            userdata: null_mut,
        };
        let mut parser = std::ptr::null_mut();
        let rv = mp4parse_new(&io, &mut parser);
        assert_eq!(rv, Mp4parseStatus::BadArg);
        assert!(parser.is_null());

        let mut dummy_value = 42;
        let io = Mp4parseIo {
            read: None,
            userdata: &mut dummy_value as *mut _ as *mut std::os::raw::c_void,
        };
        let mut parser = std::ptr::null_mut();
        let rv = mp4parse_new(&io, &mut parser);
        assert_eq!(rv, Mp4parseStatus::BadArg);
        assert!(parser.is_null());

        let mut dummy_info = Mp4parseTrackInfo {
            track_type: Mp4parseTrackType::Video,
            ..Default::default()
        };
        assert_eq!(
            Mp4parseStatus::BadArg,
            mp4parse_get_track_info(std::ptr::null_mut(), 0, &mut dummy_info)
        );

        let mut dummy_video = Default::default();
        assert_eq!(
            Mp4parseStatus::BadArg,
            mp4parse_get_track_video_info(std::ptr::null_mut(), 0, &mut dummy_video)
        );

        let mut dummy_audio = Default::default();
        assert_eq!(
            Mp4parseStatus::BadArg,
            mp4parse_get_track_audio_info(std::ptr::null_mut(), 0, &mut dummy_audio)
        );
    }
}