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
|
// Copyright 2011 The LevelDB-Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package db
import (
"testing"
)
func TestDefCmp(t *testing.T) {
testCases := []struct {
a, b, want string
}{
// Examples from the doc comments.
{"black", "blue", "blb"},
{"green", "", "h"},
// Non-empty b values. The C++ Level-DB code calls these separators.
{"", "2", ""},
{"1", "2", "1"},
{"1", "29", "1"},
{"13", "19", "14"},
{"13", "99", "2"},
{"135", "19", "14"},
{"1357", "19", "14"},
{"1357", "2", "1357"},
{"13\xff", "14", "13\xff"},
{"13\xff", "19", "14"},
{"1\xff\xff", "19", "1\xff\xff"},
{"1\xff\xff", "2", "1\xff\xff"},
{"1\xff\xff", "9", "2"},
// Empty b values. The C++ Level-DB code calls these successors.
{"", "", ""},
{"1", "", "2"},
{"11", "", "2"},
{"11\xff", "", "2"},
{"1\xff", "", "2"},
{"1\xff\xff", "", "2"},
{"\xff", "", "\xff"},
{"\xff\xff", "", "\xff\xff"},
{"\xff\xff\xff", "", "\xff\xff\xff"},
}
for _, tc := range testCases {
const s = "pqrs"
got := string(DefaultComparer.AppendSeparator([]byte(s), []byte(tc.a), []byte(tc.b)))
if got != s+tc.want {
t.Errorf("a, b = %q, %q: got %q, want %q", tc.a, tc.b, got, s+tc.want)
}
}
}
|
