package x64_test

import (
	"testing"

	"git.akyoto.dev/cli/q/src/build/arch/x64"
	"git.akyoto.dev/go/assert"
)

func TestModRM(t *testing.T) {
	testData := []struct{ mod, reg, rm, expected byte }{
		{0b_00, 0b_111, 0b_000, 0b_00_111_000},
		{0b_00, 0b_110, 0b_001, 0b_00_110_001},
		{0b_00, 0b_101, 0b_010, 0b_00_101_010},
		{0b_00, 0b_100, 0b_011, 0b_00_100_011},
		{0b_00, 0b_011, 0b_100, 0b_00_011_100},
		{0b_00, 0b_010, 0b_101, 0b_00_010_101},
		{0b_00, 0b_001, 0b_110, 0b_00_001_110},
		{0b_00, 0b_000, 0b_111, 0b_00_000_111},
		{0b_11, 0b_111, 0b_000, 0b_11_111_000},
		{0b_11, 0b_110, 0b_001, 0b_11_110_001},
		{0b_11, 0b_101, 0b_010, 0b_11_101_010},
		{0b_11, 0b_100, 0b_011, 0b_11_100_011},
		{0b_11, 0b_011, 0b_100, 0b_11_011_100},
		{0b_11, 0b_010, 0b_101, 0b_11_010_101},
		{0b_11, 0b_001, 0b_110, 0b_11_001_110},
		{0b_11, 0b_000, 0b_111, 0b_11_000_111},
	}

	for _, test := range testData {
		modRM := x64.ModRM(test.mod, test.reg, test.rm)
		assert.Equal(t, modRM, test.expected)
	}
}