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
|
package chunkreader
import (
"bytes"
"testing"
)
func TestChunkReaderNextDoesNotReadIfAlreadyBuffered(t *testing.T) {
server := &bytes.Buffer{}
r, err := NewConfig(server, Config{MinBufLen: 4})
if err != nil {
t.Fatal(err)
}
src := []byte{1, 2, 3, 4}
server.Write(src)
n1, err := r.Next(2)
if err != nil {
t.Fatal(err)
}
if bytes.Compare(n1, src[0:2]) != 0 {
t.Fatalf("Expected read bytes to be %v, but they were %v", src[0:2], n1)
}
n2, err := r.Next(2)
if err != nil {
t.Fatal(err)
}
if bytes.Compare(n2, src[2:4]) != 0 {
t.Fatalf("Expected read bytes to be %v, but they were %v", src[2:4], n2)
}
if bytes.Compare(r.buf, src) != 0 {
t.Fatalf("Expected r.buf to be %v, but it was %v", src, r.buf)
}
if r.rp != 4 {
t.Fatalf("Expected r.rp to be %v, but it was %v", 4, r.rp)
}
if r.wp != 4 {
t.Fatalf("Expected r.wp to be %v, but it was %v", 4, r.wp)
}
}
func TestChunkReaderNextExpandsBufAsNeeded(t *testing.T) {
server := &bytes.Buffer{}
r, err := NewConfig(server, Config{MinBufLen: 4})
if err != nil {
t.Fatal(err)
}
src := []byte{1, 2, 3, 4, 5, 6, 7, 8}
server.Write(src)
n1, err := r.Next(5)
if err != nil {
t.Fatal(err)
}
if bytes.Compare(n1, src[0:5]) != 0 {
t.Fatalf("Expected read bytes to be %v, but they were %v", src[0:5], n1)
}
if len(r.buf) != 5 {
t.Fatalf("Expected len(r.buf) to be %v, but it was %v", 5, len(r.buf))
}
}
func TestChunkReaderDoesNotReuseBuf(t *testing.T) {
server := &bytes.Buffer{}
r, err := NewConfig(server, Config{MinBufLen: 4})
if err != nil {
t.Fatal(err)
}
src := []byte{1, 2, 3, 4, 5, 6, 7, 8}
server.Write(src)
n1, err := r.Next(4)
if err != nil {
t.Fatal(err)
}
if bytes.Compare(n1, src[0:4]) != 0 {
t.Fatalf("Expected read bytes to be %v, but they were %v", src[0:4], n1)
}
n2, err := r.Next(4)
if err != nil {
t.Fatal(err)
}
if bytes.Compare(n2, src[4:8]) != 0 {
t.Fatalf("Expected read bytes to be %v, but they were %v", src[4:8], n2)
}
if bytes.Compare(n1, src[0:4]) != 0 {
t.Fatalf("Expected KeepLast to prevent Next from overwriting buf, expected %v but it was %v", src[0:4], n1)
}
}
|
