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
|
package pktline
import (
"strings"
"testing"
"github.com/stretchr/testify/require"
)
var (
largestString = strings.Repeat("z", 0xffff-4)
)
func TestScanner(t *testing.T) {
largestPacket := "ffff" + largestString
testCases := []struct {
desc string
in string
out []string
fail bool
}{
{
desc: "happy path",
in: "0010hello world!000000010010hello world!",
out: []string{"0010hello world!", "0000", "0001", "0010hello world!"},
},
{
desc: "large input",
in: "0010hello world!0000" + largestPacket + "0000",
out: []string{"0010hello world!", "0000", largestPacket, "0000"},
},
{
desc: "missing byte middle",
in: "0010hello world!00000010010hello world!",
out: []string{"0010hello world!", "0000", "0010010hello wor"},
fail: true,
},
{
desc: "unfinished prefix",
in: "0010hello world!000",
out: []string{"0010hello world!"},
fail: true,
},
{
desc: "short read in data, only prefix",
in: "0010hello world!0005",
out: []string{"0010hello world!"},
fail: true,
},
}
for _, tc := range testCases {
t.Run(tc.desc, func(t *testing.T) {
scanner := NewScanner(strings.NewReader(tc.in))
var output []string
for scanner.Scan() {
output = append(output, scanner.Text())
}
if tc.fail {
require.Error(t, scanner.Err())
} else {
require.NoError(t, scanner.Err())
}
require.Equal(t, tc.out, output)
})
}
}
func TestIsDone(t *testing.T) {
testCases := []struct {
in string
done bool
}{
{in: "0008abcd", done: false},
{in: "invalid packet", done: false},
{in: "0009done\n", done: true},
{in: "0001", done: false},
}
for _, tc := range testCases {
t.Run(tc.in, func(t *testing.T) {
require.Equal(t, tc.done, IsDone([]byte(tc.in)))
})
}
}
|
