msg_codec_test.go

Documentation: go.etcd.io/etcd/server/v3/etcdserver/api/rafthttp

     1  // Copyright 2015 The etcd Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package rafthttp
    16  
    17  import (
    18  	"bytes"
    19  	"reflect"
    20  	"testing"
    21  
    22  	"go.etcd.io/etcd/raft/v3/raftpb"
    23  )
    24  
    25  func TestMessage(t *testing.T) {
    26  	// Lower readBytesLimit to make test pass in restricted resources environment
    27  	originalLimit := readBytesLimit
    28  	readBytesLimit = 1000
    29  	defer func() {
    30  		readBytesLimit = originalLimit
    31  	}()
    32  	tests := []struct {
    33  		msg       raftpb.Message
    34  		encodeErr error
    35  		decodeErr error
    36  	}{
    37  		{
    38  			raftpb.Message{
    39  				Type:    raftpb.MsgApp,
    40  				From:    1,
    41  				To:      2,
    42  				Term:    1,
    43  				LogTerm: 1,
    44  				Index:   3,
    45  				Entries: []raftpb.Entry{{Term: 1, Index: 4}},
    46  			},
    47  			nil,
    48  			nil,
    49  		},
    50  		{
    51  			raftpb.Message{
    52  				Type: raftpb.MsgProp,
    53  				From: 1,
    54  				To:   2,
    55  				Entries: []raftpb.Entry{
    56  					{Data: []byte("some data")},
    57  					{Data: []byte("some data")},
    58  					{Data: []byte("some data")},
    59  				},
    60  			},
    61  			nil,
    62  			nil,
    63  		},
    64  		{
    65  			raftpb.Message{
    66  				Type: raftpb.MsgProp,
    67  				From: 1,
    68  				To:   2,
    69  				Entries: []raftpb.Entry{
    70  					{Data: bytes.Repeat([]byte("a"), int(readBytesLimit+10))},
    71  				},
    72  			},
    73  			nil,
    74  			ErrExceedSizeLimit,
    75  		},
    76  	}
    77  	for i, tt := range tests {
    78  		b := &bytes.Buffer{}
    79  		enc := &messageEncoder{w: b}
    80  		if err := enc.encode(&tt.msg); err != tt.encodeErr {
    81  			t.Errorf("#%d: encode message error expected %v, got %v", i, tt.encodeErr, err)
    82  			continue
    83  		}
    84  		dec := &messageDecoder{r: b}
    85  		m, err := dec.decode()
    86  		if err != tt.decodeErr {
    87  			t.Errorf("#%d: decode message error expected %v, got %v", i, tt.decodeErr, err)
    88  			continue
    89  		}
    90  		if err == nil {
    91  			if !reflect.DeepEqual(m, tt.msg) {
    92  				t.Errorf("#%d: message = %+v, want %+v", i, m, tt.msg)
    93  			}
    94  		}
    95  	}
    96  }
    97
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