limitations under the License.
*/

package node

import (
	"testing"

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

func TestIntSet(t *testing.T) {
	i := newIntSet()

	assert.False(t, i.has(1))
	assert.False(t, i.has(2))
	assert.False(t, i.has(3))
	assert.False(t, i.has(4))

	i.reset()
	i.increment(1) // to 1
	i.increment(2) // to 1

	assert.True(t, i.has(1))

limitations under the License.
*/

package node

// intSet maintains a map of id to refcounts
type intSet struct {
	// members is a map of id to refcounts
	members map[int]int
}

func newIntSet() *intSet {
	return &intSet{members: map[int]int{}}
}

// has returns true if the specified id has a positive refcount.
// it is safe to call concurrently, but must not be called concurrently with any of the other methods.