| // Copyright 2015 The etcd 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 wal |
| |
| import ( |
| "bytes" |
| "hash/crc32" |
| "io" |
| "io/ioutil" |
| "reflect" |
| "testing" |
| |
| "github.com/coreos/etcd/wal/walpb" |
| ) |
| |
| var ( |
| infoData = []byte("\b\xef\xfd\x02") |
| infoRecord = append([]byte("\x0e\x00\x00\x00\x00\x00\x00\x00\b\x01\x10\x99\xb5\xe4\xd0\x03\x1a\x04"), infoData...) |
| ) |
| |
| func TestReadRecord(t *testing.T) { |
| badInfoRecord := make([]byte, len(infoRecord)) |
| copy(badInfoRecord, infoRecord) |
| badInfoRecord[len(badInfoRecord)-1] = 'a' |
| |
| tests := []struct { |
| data []byte |
| wr *walpb.Record |
| we error |
| }{ |
| {infoRecord, &walpb.Record{Type: 1, Crc: crc32.Checksum(infoData, crcTable), Data: infoData}, nil}, |
| {[]byte(""), &walpb.Record{}, io.EOF}, |
| {infoRecord[:8], &walpb.Record{}, io.ErrUnexpectedEOF}, |
| {infoRecord[:len(infoRecord)-len(infoData)-8], &walpb.Record{}, io.ErrUnexpectedEOF}, |
| {infoRecord[:len(infoRecord)-len(infoData)], &walpb.Record{}, io.ErrUnexpectedEOF}, |
| {infoRecord[:len(infoRecord)-8], &walpb.Record{}, io.ErrUnexpectedEOF}, |
| {badInfoRecord, &walpb.Record{}, walpb.ErrCRCMismatch}, |
| } |
| |
| rec := &walpb.Record{} |
| for i, tt := range tests { |
| buf := bytes.NewBuffer(tt.data) |
| decoder := newDecoder(ioutil.NopCloser(buf)) |
| e := decoder.decode(rec) |
| if !reflect.DeepEqual(rec, tt.wr) { |
| t.Errorf("#%d: block = %v, want %v", i, rec, tt.wr) |
| } |
| if !reflect.DeepEqual(e, tt.we) { |
| t.Errorf("#%d: err = %v, want %v", i, e, tt.we) |
| } |
| rec = &walpb.Record{} |
| } |
| } |
| |
| func TestWriteRecord(t *testing.T) { |
| b := &walpb.Record{} |
| typ := int64(0xABCD) |
| d := []byte("Hello world!") |
| buf := new(bytes.Buffer) |
| e := newEncoder(buf, 0, 0) |
| e.encode(&walpb.Record{Type: typ, Data: d}) |
| e.flush() |
| decoder := newDecoder(ioutil.NopCloser(buf)) |
| err := decoder.decode(b) |
| if err != nil { |
| t.Errorf("err = %v, want nil", err) |
| } |
| if b.Type != typ { |
| t.Errorf("type = %d, want %d", b.Type, typ) |
| } |
| if !reflect.DeepEqual(b.Data, d) { |
| t.Errorf("data = %v, want %v", b.Data, d) |
| } |
| } |