import CPU6502, { FLAVOR_ROCKWELL_65C02 } from '../js/cpu6502';
// From https://github.com/Klaus2m5/6502_65C02_functional_tests
import Test6502 from './roms/6502test';
import Test65C02 from './roms/65C02test';

import { toHex } from '../js/util';

describe('CPU', function () {
  let cpu: CPU6502;
  let lastPC = 0;
  let done = false;

  function traceCB() {
    const pc = cpu.getPC();
    done = lastPC === pc;
    lastPC = pc;
  }

  describe('6502', function () {
    it('completes the test ROM', function () {
      cpu = new CPU6502();
      const test = new Test6502();
      cpu.addPageHandler(test);
      cpu.setPC(0x400);

      do {
        cpu.stepCyclesDebug(1000, traceCB);
      } while (!done);

      expect(toHex(lastPC)).toEqual(toHex(0x3469));
    });
  });

  describe('65C02', function () {
    it('completes the test ROM', function () {
      cpu = new CPU6502({ flavor: FLAVOR_ROCKWELL_65C02 });
      const test = new Test65C02();
      cpu.addPageHandler(test);
      cpu.setPC(0x400);

      do {
        cpu.stepCyclesDebug(1000, traceCB);
      } while (!done);

      expect(toHex(lastPC)).toEqual(toHex(0x24f1));
    });
  });
});