mod test_utils;
use crate::test_utils::load_compressed_result;
use crate::test_utils::load_rom;
use gemma::chip8::computer::Chip8Computer;
use gemma::chip8::computer_manager::Chip8ComputerManager;
use gemma::chip8::quirk_modes::QuirkMode;
use gemma::chip8::quirk_modes::QuirkMode::{Chip8, SChipModern, XOChip};
use gemma::chip8::registers::Chip8Registers;
use gemma::constants::{CHIP8_VIDEO_MEMORY, TEST_ROM_ROOT};
use std::path::Path;

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

#[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(gemma::chip8::quirk_modes::QuirkMode::Chip8);
    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));
    }
}

#[test]
fn level1_test() {
    let mut x = Chip8Computer::new();
    let level_1_rom = load_rom("1-chip8-logo");
    x.load_bytes_to_memory(0x200, &level_1_rom);

    // run for 0x40 cycles
    while x.num_cycles < 0x40 {
        x.step_system();
    }
    assert_eq!(
        x.dump_video_to_string(),
        load_compressed_result("gemma_integration_level_1_test")
    );
}

#[test]
fn level2_test() {
    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.
    x.load_bytes_to_memory(0x200, &load_rom("2-ibm-logo"));
    for _ 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(),
        load_compressed_result("gemma_integration_ibm_rom_output")
    );
}

#[test]
fn level3_test() {
    let mut x = Chip8Computer::new();

    x.load_bytes_to_memory(0x200, &load_rom("3-corax+"));
    for _ in 0..0x180 {
        x.step_system();
    }

    assert_eq!(
        x.dump_video_to_string(),
        load_compressed_result("gemma_integration_corax_plus")
    );
}

#[test]
fn level3_compressed_test() {
    let mut x = Chip8Computer::new();

    x.load_bytes_to_memory(0x200, &load_rom("3-corax+"));
    for _ in 0..0x180 {
        x.step_system();
    }

    assert_eq!(
        x.dump_video_to_string(),
        load_compressed_result("gemma_integration.corax_plus")
    );
}

#[test]
fn rps_test() {
    let mut x = Chip8Computer::new();
    x.load_bytes_to_memory(0x200, &load_rom("RPS"));
    for _ in 0..0xF0 {
        x.step_system();
    }
    assert_eq!(
        x.dump_video_to_string(),
        load_compressed_result("gemma_integration_rps_stage1")
    );
    x.keypad.push_key(0x01);
    for _ in 0..0x200 {
        x.step_system();
    }
    assert_eq!(
        x.dump_video_to_string(),
        load_compressed_result("gemma_integration_rps_stage2")
    );
}

#[test]
fn level4_test() {
    // flags
    let mut x = Chip8Computer::new();
    x.load_bytes_to_memory(0x200, &load_rom("4-flags"));
    for _ in 0..0x400 {
        x.step_system();
    }

    assert_eq!(
        x.dump_video_to_string(),
        load_compressed_result("gemma_integration_flags")
    );
}


#[test]
fn partial_eq_chip8computer() {
    let x = Chip8Computer::new();
    let y = Chip8Computer::new();
    assert_eq!(x, y)
}


#[test]
fn tick_when_not_ready() {}

#[test]
fn tick_one_step_only() {}