flag_test.go

// Copyright 2024 The BxELab studyzy Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package runestone

import (
	"testing"

	"github.com/stretchr/testify/assert"
	"lukechampine.com/uint128"
)

func TestFlagMask(t *testing.T) {
	m := FlagEtching.Mask()
	assert.Equal(t, uint128.From64(1), m)
	assert.Equal(t, uint128.From64(1).Lsh(1), FlagTerms.Mask())

	assert.Equal(t, uint128.From64(1).Lsh(2), FlagTurbo.Mask())
	assert.Equal(t, uint128.From64(1).Lsh(127), FlagCenotaph.Mask())
}

func TestFlagTake(t *testing.T) {
	flags := uint128.From64(1)
	assert.True(t, FlagEtching.Take(&flags))
	assert.Equal(t, 0, flags.Cmp(uint128.Zero))

	flags = uint128.From64(0)
	assert.False(t, FlagEtching.Take(&flags))
	assert.Equal(t, 0, flags.Cmp(uint128.Zero))
}

func TestFlagSet(t *testing.T) {
	flags := uint128.Zero
	FlagEtching.Set(&flags)
	assert.Equal(t, uint64(1), flags.Lo)

}