package hbrtl

import (
	"testing"
)

func TestHbBitAnd(t *testing.T) {
	_, th := setupVM()
	th.PushLong(0xFF)
	th.PushLong(0x0F)
	th.PendingParams2(2)
	HbBitAnd(th)
	if r := th.GetRetValue().AsLong(); r != 0x0F {
		t.Errorf("HB_BITAND(0xFF, 0x0F) = 0x%X, want 0x0F", r)
	}
}

func TestHbBitOr(t *testing.T) {
	_, th := setupVM()
	th.PushLong(0xF0)
	th.PushLong(0x0F)
	th.PendingParams2(2)
	HbBitOr(th)
	if r := th.GetRetValue().AsLong(); r != 0xFF {
		t.Errorf("HB_BITOR(0xF0, 0x0F) = 0x%X, want 0xFF", r)
	}
}

func TestHbBitXor(t *testing.T) {
	_, th := setupVM()
	th.PushLong(0xFF)
	th.PushLong(0x0F)
	th.PendingParams2(2)
	HbBitXor(th)
	if r := th.GetRetValue().AsLong(); r != 0xF0 {
		t.Errorf("HB_BITXOR(0xFF, 0x0F) = 0x%X, want 0xF0", r)
	}
}

func TestHbBitNot(t *testing.T) {
	_, th := setupVM()
	th.PushLong(0)
	th.PendingParams2(1)
	HbBitNot(th)
	if r := th.GetRetValue().AsLong(); r != -1 {
		t.Errorf("HB_BITNOT(0) = %d, want -1", r)
	}
}

func TestHbBitShift(t *testing.T) {
	_, th := setupVM()
	// Left shift
	th.PushLong(1)
	th.PushLong(4)
	th.PendingParams2(2)
	HbBitShift(th)
	if r := th.GetRetValue().AsLong(); r != 16 {
		t.Errorf("HB_BITSHIFT(1, 4) = %d, want 16", r)
	}

	// Right shift
	th.PushLong(16)
	th.PushLong(-2)
	th.PendingParams2(2)
	HbBitShift(th)
	if r := th.GetRetValue().AsLong(); r != 4 {
		t.Errorf("HB_BITSHIFT(16, -2) = %d, want 4", r)
	}
}

func TestHbBitTestSetReset(t *testing.T) {
	_, th := setupVM()
	// BITTEST(8, 3) → true (bit 3 of 8=0b1000)
	th.PushLong(8)
	th.PushLong(3)
	th.PendingParams2(2)
	HbBitTest(th)
	if r := th.GetRetValue().AsBool(); !r {
		t.Error("HB_BITTEST(8, 3) = false, want true")
	}

	// BITSET(0, 5) → 32
	th.PushLong(0)
	th.PushLong(5)
	th.PendingParams2(2)
	HbBitSet(th)
	if r := th.GetRetValue().AsLong(); r != 32 {
		t.Errorf("HB_BITSET(0, 5) = %d, want 32", r)
	}

	// BITRESET(0xFF, 0) → 0xFE
	th.PushLong(0xFF)
	th.PushLong(0)
	th.PendingParams2(2)
	HbBitReset(th)
	if r := th.GetRetValue().AsLong(); r != 0xFE {
		t.Errorf("HB_BITRESET(0xFF, 0) = 0x%X, want 0xFE", r)
	}
}