-
Notifications
You must be signed in to change notification settings - Fork 1
/
iterator_test.go
106 lines (92 loc) · 1.75 KB
/
iterator_test.go
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
package gecs
import (
"testing"
)
// IntIterator for int type
type IntIterator struct {
datas []int
pos int
}
// Equal other
func (i IntIterator) Equal(other IIterator) bool {
tOther := other.(*IntIterator)
return i.pos == tOther.pos && &i.datas[0] == &tOther.datas[0]
}
// Next iterator
func (i *IntIterator) Next() IIterator {
i.pos++
return IIterator(i)
}
// Prev iterator
func (i *IntIterator) Prev() IIterator {
i.pos--
return IIterator(i)
}
// Begin iterator
func (i IntIterator) Begin() IIterator {
i.pos = 0
return IIterator(&i)
}
// End iterator
func (i IntIterator) End() IIterator {
i.pos = len(i.datas)
return IIterator(&i)
}
// Data with the iterator value
func (i IntIterator) Data() interface{} {
return i.datas[i.pos]
}
func TestIterator(t *testing.T) {
items1 := []int{
1, 2, 3, 4, 5,
}
items3 := items1[:]
items2 := []int{
1, 2, 3, 4, 5,
}
if &items1[0] == &items3[0] {
t.Log("items1 equal items3")
}
if &items2 == &items3 {
t.Log("items2 equal items3")
}
Each(&IntIterator{
datas: items1,
pos: 0,
}, func(data interface{}) {
t.Logf("item is %v", data)
})
ReverseEach(&IntIterator{
datas: items1,
pos: 0,
}, func(data interface{}) {
t.Logf("item is %v", data)
})
}
// type People struct {
// Name string
// }
// func TestModify(t *testing.T) {
// datas := []*People{
// {
// Name: "1",
// }, {
// Name: "2",
// }, {
// Name: "3",
// }, {
// Name: "4",
// }}
// fn := func(i int) *People {
// return datas[i]
// }
// t.Logf("datas: %+v", datas)
// modifyFn := func(i int) {
// a := fn(i)
// t.Logf("index datas[%v]=%+v : %+v", i, datas[i], a)
// b := &a
// *b = &People{Name: "100"}
// t.Logf("index datas[%v]=%+v : %+v", i, datas[i], a)
// }
// modifyFn(1)
// }