1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
package main
import (
"bytes"
"io/ioutil"
"log"
"os"
"path"
"testing"
"github.com/gabstv/go-bsdiff/pkg/bsdiff"
)
func TestMain(m *testing.M) {
setup()
code := m.Run()
shutdown()
os.Exit(code)
}
func setup() {
log.SetFlags(log.Lshortfile)
}
func shutdown() {}
func prepareResult() string {
result := path.Join("test", "result")
os.RemoveAll(result)
os.MkdirAll(result, 0775)
return result
}
func chunkCompare(t *testing.T, dataDir string, testFiles []string, chunkCount int) {
chunks := make(chan []byte)
files := listFiles(dataDir)
go readFiles(files, chunks)
offset := 0
buff := make([]byte, chunkSize*chunkCount)
for _, f := range testFiles {
content, err := os.ReadFile(path.Join(dataDir, f))
if err != nil {
t.Error("Error reading test data file")
}
for i := range content {
buff[offset+i] = content[i]
}
offset += len(content)
}
i := 0
for c := range chunks {
content := buff[i*chunkSize : (i+1)*chunkSize]
if len(c) != chunkSize {
t.Errorf("Chunk %d is not of chunkSize: %d", i, chunkSize)
}
if bytes.Compare(c, content) != 0 {
t.Errorf("Chunk %d does not match file content", i)
t.Log("Expected: ", c[:10], "...")
t.Log("Result:", content)
}
i++
}
if i != chunkCount {
t.Errorf("Incorrect number of chunks: %d, should be: %d", i, chunkCount)
}
}
func TestReadFiles1(t *testing.T) {
chunkCount := 1
dataDir := path.Join("test", "data", "logs.1")
files := []string{"logTest.log"}
chunkCompare(t, dataDir, files, chunkCount)
}
func TestReadFiles2(t *testing.T) {
chunkCount := 3
dataDir := path.Join("test", "data", "logs.2")
files := []string{"csvParserTest.log", "slipdb.log"}
chunkCompare(t, dataDir, files, chunkCount)
}
func TestReadFiles3(t *testing.T) {
chunkCount := 15
dataDir := path.Join("test", "data")
files := []string{
path.Join("logs.1", "logTest.log"),
path.Join("logs.2", "csvParserTest.log"),
path.Join("logs.2", "slipdb.log"),
path.Join("logs.3", "indexingTreeTest.log"),
}
chunkCompare(t, dataDir, files, chunkCount)
}
func TestLoadChunks(t *testing.T) {
resultDir := prepareResult()
dataDir := path.Join("test", "data")
resultVersion := path.Join(resultDir, "00000")
resultChunks := path.Join(resultVersion, chunksName)
os.MkdirAll(resultChunks, 0775)
chunks1 := make(chan []byte, 16)
chunks2 := make(chan []byte, 16)
chunks3 := make(chan Chunk, 16)
files := listFiles(dataDir)
go readFiles(files, chunks1)
go readFiles(files, chunks2)
storeChunks(resultChunks, chunks1)
versions := []string{resultVersion}
go loadChunks(versions, chunks3)
i := 0
for c2 := range chunks2 {
c3 := <-chunks3
if bytes.Compare(c2, c3.Value) != 0 {
t.Errorf("Chunk %d does not match file content", i)
t.Log("Expected: ", c2[:10], "...")
t.Log("Result:", c3.Value)
}
i++
}
}
func TestStoreLoadFiles(t *testing.T) {
resultDir := prepareResult()
dataDir := path.Join("test", "data")
resultFiles := path.Join(resultDir, filesName)
files1 := listFiles(dataDir)
storeFiles(resultFiles, files1)
files2 := loadFiles(resultFiles)
for i, f := range files1 {
if f != files2[i] {
t.Errorf("Loaded file data %d does not match stored one", i)
t.Log("Expected: ", f)
t.Log("Result: ", files2[i])
}
}
}
func TestBsdiff(t *testing.T) {
resultDir := prepareResult()
dataDir := path.Join("test", "data")
addedFile := path.Join(dataDir, "logs.2", "slogTest.log")
resultVersion := path.Join(resultDir, "00000")
resultChunks := path.Join(resultVersion, chunksName)
os.MkdirAll(resultChunks, 0775)
chunks := make(chan []byte, 16)
files := listFiles(dataDir)
go readFiles(files, chunks)
storeChunks(resultChunks, chunks)
input, _ := ioutil.ReadFile(path.Join(dataDir, "logs.1", "logTest.log"))
ioutil.WriteFile(addedFile, input, 0664)
newChunks := make(chan []byte, 16)
oldChunks := make(chan Chunk, 16)
files = listFiles(dataDir)
repo := NewRepo(resultDir)
versions := repo.loadVersions()
go loadChunks(versions, oldChunks)
go readFiles(files, newChunks)
hashes := hashChunks(oldChunks)
recipe := repo.matchChunks(newChunks, hashes)
buff := new(bytes.Buffer)
r2, _ := recipe[2].Reader(repo.path)
r0, _ := recipe[0].Reader(repo.path)
bsdiff.Reader(r2, r0, buff)
if len(buff.Bytes()) < 500 {
t.Errorf("Bsdiff of chunk is too small: %d", len(buff.Bytes()))
}
if len(buff.Bytes()) >= chunkSize {
t.Errorf("Bsdiff of chunk is too large: %d", len(buff.Bytes()))
}
os.Remove(addedFile)
}
|
