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
|
package imap
import (
"sync"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestSeqMap(t *testing.T) {
var seqmap SeqMap
var uid uint32
var found bool
assert := assert.New(t)
assert.Equal(0, seqmap.Size())
_, found = seqmap.Get(42)
assert.Equal(false, found)
_, found = seqmap.Pop(0)
assert.Equal(false, found)
uids := []uint32{1337, 42, 1107}
seqmap.Initialize(uids)
assert.Equal(3, seqmap.Size())
// Original list should remain unsorted
assert.Equal([]uint32{1337, 42, 1107}, uids)
_, found = seqmap.Pop(0)
assert.Equal(false, found)
uid, found = seqmap.Get(1)
assert.Equal(42, int(uid))
assert.Equal(true, found)
uid, found = seqmap.Pop(1)
assert.Equal(42, int(uid))
assert.Equal(true, found)
assert.Equal(2, seqmap.Size())
uid, found = seqmap.Get(1)
assert.Equal(1107, int(uid))
// Repeated puts of the same UID shouldn't change the size
seqmap.Put(1231)
assert.Equal(3, seqmap.Size())
seqmap.Put(1231)
assert.Equal(3, seqmap.Size())
uid, found = seqmap.Get(2)
assert.Equal(1231, int(uid))
_, found = seqmap.Pop(1)
assert.Equal(true, found)
assert.Equal(2, seqmap.Size())
seqmap.Initialize(nil)
assert.Equal(0, seqmap.Size())
var wg sync.WaitGroup
wg.Add(1)
go func() {
defer wg.Done()
seqmap.Initialize([]uint32{42, 1337})
}()
wg.Add(1)
go func() {
defer wg.Done()
for _, found := seqmap.Pop(1); !found; _, found = seqmap.Pop(1) {
time.Sleep(1 * time.Millisecond)
}
}()
wg.Add(1)
go func() {
defer wg.Done()
for _, found := seqmap.Pop(1); !found; _, found = seqmap.Pop(1) {
time.Sleep(1 * time.Millisecond)
}
}()
wg.Wait()
assert.Equal(0, seqmap.Size())
//
// Test snapshotting
//
// The sequence is [ 21, 24, 1107, 1982, 2399, 27892, 32000 ] (1 is at
// position 1, 24 position 2, etc)
seqmap.Initialize([]uint32{21, 42, 1107, 1982, 2390, 27892, 32000})
// Snapshot [ 21, 1107, 27892, 1234567 ]; they're all present in the
// sequence except 27982
snap, min := seqmap.Snapshot([]uint32{21, 1107, 27892, 1234567})
// Verify that we did snapshot [ 1 => 21, 3=>1107, 6=>27892 ]
assert.Equal(3, len(snap))
assert.Equal(uint32(1), min)
assert.Equal(snap[1], uint32(21))
assert.Equal(snap[3], uint32(1107))
assert.Equal(snap[6], uint32(27892))
// Vefify that the snapshotted items have been removed from the sequence,
// that therefore became [ 42, 1982, 2390, 32000 ]
assert.Equal(4, seqmap.Size())
o1, _ := seqmap.Get(1)
assert.Equal(uint32(42), o1)
o2, _ := seqmap.Get(2)
assert.Equal(uint32(1982), o2)
o3, _ := seqmap.Get(3)
assert.Equal(uint32(2390), o3)
o4, _ := seqmap.Get(4)
assert.Equal(uint32(32000), o4)
}
|
