gbso/tests/insn/test_shift.py

import pytest

from tests.insn.helpers import *


def test_rlca():
    cpu = CPU()
    cpu.set_reg8(R8.A, 0x80)

    RLCA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x01
    assert cpu.carry == 1
    assert cpu.cycles == 4

    RLCA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x02
    assert cpu.carry == 0
    assert cpu.cycles == 8


def test_rla():
    cpu = CPU()
    cpu.set_reg8(R8.A, 0x80)

    RLA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x00
    assert cpu.carry == 1
    assert cpu.cycles == 4

    RLA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x01
    assert cpu.carry == 0
    assert cpu.cycles == 8


def test_rrca():
    cpu = CPU()
    cpu.set_reg8(R8.A, 0x01)

    RRCA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x80
    assert cpu.carry == 1
    assert cpu.cycles == 4

    RRCA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x40
    assert cpu.carry == 0
    assert cpu.cycles == 8


def test_rra():
    cpu = CPU()
    cpu.set_reg8(R8.A, 0x01)

    RRA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x00
    assert cpu.carry == 1
    assert cpu.cycles == 4

    RRA().exec(cpu)

    assert cpu.get_reg8(R8.A) == 0x80
    assert cpu.carry == 0
    assert cpu.cycles == 8


@pytest.mark.parametrize("r", R8)
def test_rlc_r(r):
    cpu = CPU()
    cpu.set_reg8(r, 0x80)

    RLC_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x01
    assert cpu.carry == 1
    assert cpu.cycles == 8

    RLC_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x02
    assert cpu.carry == 0
    assert cpu.cycles == 16


@pytest.mark.parametrize("r", R8)
def test_rl_r(r):
    cpu = CPU()
    cpu.set_reg8(r, 0x80)

    RL_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x00
    assert cpu.carry == 1
    assert cpu.cycles == 8

    RL_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x01
    assert cpu.carry == 0
    assert cpu.cycles == 16


@pytest.mark.parametrize("r", R8)
def test_rrc_r(r):
    cpu = CPU()
    cpu.set_reg8(r, 0x01)

    RRC_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x80
    assert cpu.carry == 1
    assert cpu.cycles == 8

    RRC_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x40
    assert cpu.carry == 0
    assert cpu.cycles == 16


@pytest.mark.parametrize("r", R8)
def test_rr_r(r):
    cpu = CPU()
    cpu.set_reg8(r, 0x01)

    RR_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x00
    assert cpu.carry == 1
    assert cpu.cycles == 8

    RR_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x80
    assert cpu.carry == 0
    assert cpu.cycles == 16


# TODO: Test RLC_HL, RL_HL, RRC_HL, RR_HL