gbso/tests/cpu/insn/test_shift.py

import pytest

from tests.cpu.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.state.carry == 1

    RLCA().exec(cpu)

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


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

    RLA().exec(cpu)

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

    RLA().exec(cpu)

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


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

    RRCA().exec(cpu)

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

    RRCA().exec(cpu)

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


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

    RRA().exec(cpu)

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

    RRA().exec(cpu)

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


@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.state.carry == 1

    RLC_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x02
    assert cpu.state.carry == 0


def test_rlc_hl():
    cpu = CPU()
    cpu.hl = 0x80

    RLC_HL().exec(cpu)

    assert cpu.hl == 0x01
    assert cpu.state.carry == 1

    RLC_HL().exec(cpu)

    assert cpu.hl == 0x02
    assert cpu.state.carry == 0


@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.state.carry == 1

    RL_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x01
    assert cpu.state.carry == 0


def test_rl_hl():
    cpu = CPU()
    cpu.hl = 0x80

    RL_HL().exec(cpu)

    assert cpu.hl == 0x00
    assert cpu.state.carry == 1

    RL_HL().exec(cpu)

    assert cpu.hl == 0x01
    assert cpu.state.carry == 0


@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.state.carry == 1

    RRC_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x40
    assert cpu.state.carry == 0


def test_rrc_hl():
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.hl = 0x01

    RRC_HL().exec(cpu)

    assert cpu.hl == 0x80
    assert cpu.state.carry == 1

    RRC_HL().exec(cpu)

    assert cpu.hl == 0x40
    assert cpu.state.carry == 0


@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.state.carry == 1

    RR_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x80
    assert cpu.state.carry == 0


def test_rr_hl():
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.hl = 0x01

    RR_HL().exec(cpu)

    assert cpu.hl == 0x00
    assert cpu.state.carry == 1

    RR_HL().exec(cpu)

    assert cpu.hl == 0x80
    assert cpu.state.carry == 0


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

    SLA_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0xFE
    assert cpu.state.carry == 1

    cpu.set_reg8(r, 0x01)
    SLA_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x02
    assert cpu.state.carry == 0


def test_sla_hl():
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.hl = 0xFF

    SLA_HL().exec(cpu)

    assert cpu.hl == 0xFE
    assert cpu.state.carry == 1

    cpu.hl = 0x01
    SLA_HL().exec(cpu)

    assert cpu.hl == 0x02
    assert cpu.state.carry == 0


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

    SWAP_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0xBA
    assert cpu.state.carry == 0


def test_swap_hl():
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.hl = 0xAB

    SWAP_HL().exec(cpu)

    assert cpu.hl == 0xBA
    assert cpu.state.carry == 0


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

    SRA_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0xFF
    assert cpu.state.carry == 1

    cpu.set_reg8(r, 0x02)
    SRA_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x01
    assert cpu.state.carry == 0


def test_sra_hl():
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.hl = 0xFF

    SRA_HL().exec(cpu)

    assert cpu.hl == 0xFF
    assert cpu.state.carry == 1

    cpu.hl = 0x02
    SRA_HL().exec(cpu)

    assert cpu.hl == 0x01
    assert cpu.state.carry == 0


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

    SRL_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x7F
    assert cpu.state.carry == 1

    cpu.set_reg8(r, 0x02)
    SRL_R(r).exec(cpu)

    assert cpu.get_reg8(r) == 0x01
    assert cpu.state.carry == 0


def test_srl_hl():
    cpu = CPU()
    cpu.set_reg16(R16.HL, 0x1234)
    cpu.hl = 0xFF

    SRL_HL().exec(cpu)

    assert cpu.hl == 0x7F
    assert cpu.state.carry == 1

    cpu.hl = 0x02
    SRL_HL().exec(cpu)

    assert cpu.hl == 0x01
    assert cpu.state.carry == 0