gbso/tests/insn/test_bit.py

import pytest

from tests.insn.helpers import *


@pytest.mark.parametrize("n,r", [(n, r) for n in range(8) for r in R8])
def test_set_n_r(n, r):
    cpu = CPU()

    SET_N_R(n, r).exec(cpu)

    assert cpu.get_reg8(r) == 1 << n
    assert cpu.state.cycles == 8


@pytest.mark.parametrize("n", range(8))
def test_set_n_hl(n):
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)

    SET_N_HL(n).exec(cpu)

    assert cpu.hl == 1 << n
    assert cpu.state.cycles == 16


@pytest.mark.parametrize("n,r", [(n, r) for n in range(8) for r in R8])
def test_res_n_r(n, r):
    cpu = CPU()
    cpu.set_reg8(r, 0xFF)

    RES_N_R(n, r).exec(cpu)

    assert cpu.get_reg8(r) == 0xFF - (1 << n)
    assert cpu.state.cycles == 8


@pytest.mark.parametrize("n", range(8))
def test_res_n_hl(n):
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.set_mem8(0x1234, 0xFF)

    RES_N_HL(n).exec(cpu)

    assert cpu.hl == 0xFF - (1 << n)
    assert cpu.state.cycles == 16