use gemma::chip8::computer::Chip8Computer;
use gemma::constants::CHIP8_VIDEO_MEMORY;

#[test]
fn smoke() { assert!(true) }

#[test]
fn test_rom_1_works() {
    let mut x = Chip8Computer::new();
    // Load the IBM rom and run it.
    // it takes 39 cycles to get to the end so lets run it 40.
    
    let test_rom_to_run = std::fs::read("../resources/roms/2-ibm-logo.ch8").unwrap();
    x.load_bytes_to_memory(0x200, (&test_rom_to_run).into());

    for i in 0..40 {
        x.step_system();
    }
    // ...then verify that the current video memory of the chip-8
    // simulator matches what we expect it to be

    assert_eq!(x.dump_video_to_string(), std::fs::read_to_string("../resources/test/gemma_integration_ibm_rom_output.asc").unwrap());
}

#[test]
fn reset_clears_video() {
    let mut x = Chip8Computer::new();

    for i in 0..CHIP8_VIDEO_MEMORY {
        x.video_memory.poke(i as u16, i % 2 == 0);
    }

    x.reset();
    x.video_memory.reset();

    assert_eq!(x.dump_video_to_string(), x.video_memory.format_as_string());

    for i in 0..CHIP8_VIDEO_MEMORY {
        assert!(!x.video_memory.peek(i as u16));
    }
}