package sequence import ( "encoding/hex" "github.com/seaweedfs/seaweedfs/weed/storage/types" "github.com/stretchr/testify/assert" "testing" ) func TestSequencer(t *testing.T) { seq, err := NewSnowflakeSequencer("for_test", 1) assert.Equal(t, nil, err) last := uint64(0) bytes := make([]byte, types.NeedleIdSize) for i := 0; i < 100; i++ { next := seq.NextFileId(1) types.NeedleIdToBytes(bytes, types.NeedleId(next)) println(hex.EncodeToString(bytes)) if last == next { t.Errorf("last %d next %d", last, next) } last = next } }