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
|
// Copyright 2021 The gVisor 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 buffer
import (
"bytes"
"testing"
)
func TestBufferRemove(t *testing.T) {
sample := []byte("01234567")
// Success cases
for _, tc := range []struct {
desc string
data []byte
rng Range
want []byte
}{
{
desc: "empty slice",
},
{
desc: "empty range",
data: sample,
want: sample,
},
{
desc: "empty range with positive begin",
data: sample,
rng: Range{begin: 1, end: 1},
want: sample,
},
{
desc: "range at beginning",
data: sample,
rng: Range{begin: 0, end: 1},
want: sample[1:],
},
{
desc: "range in middle",
data: sample,
rng: Range{begin: 2, end: 4},
want: []byte("014567"),
},
{
desc: "range at end",
data: sample,
rng: Range{begin: 7, end: 8},
want: sample[:7],
},
{
desc: "range all",
data: sample,
rng: Range{begin: 0, end: 8},
},
} {
t.Run(tc.desc, func(t *testing.T) {
var buf buffer
buf.initWithData(tc.data)
if ok := buf.Remove(tc.rng); !ok {
t.Errorf("buf.Remove(%#v) = false, want true", tc.rng)
} else if got := buf.ReadSlice(); !bytes.Equal(got, tc.want) {
t.Errorf("buf.ReadSlice() = %q, want %q", got, tc.want)
}
})
}
// Failure cases
for _, tc := range []struct {
desc string
data []byte
rng Range
}{
{
desc: "begin out-of-range",
data: sample,
rng: Range{begin: -1, end: 4},
},
{
desc: "end out-of-range",
data: sample,
rng: Range{begin: 4, end: 9},
},
{
desc: "both out-of-range",
data: sample,
rng: Range{begin: -100, end: 100},
},
} {
t.Run(tc.desc, func(t *testing.T) {
var buf buffer
buf.initWithData(tc.data)
if ok := buf.Remove(tc.rng); ok {
t.Errorf("buf.Remove(%#v) = true, want false", tc.rng)
}
})
}
}
|
