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
117
118
119
120
121
122
123
124
125
126
127
128
|
// Copyright 2009 The 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 expvar
import (
"json"
"testing"
)
func TestInt(t *testing.T) {
reqs := NewInt("requests")
if reqs.i != 0 {
t.Errorf("reqs.i = %v, want 0", reqs.i)
}
if reqs != Get("requests").(*Int) {
t.Errorf("Get() failed.")
}
reqs.Add(1)
reqs.Add(3)
if reqs.i != 4 {
t.Errorf("reqs.i = %v, want 4", reqs.i)
}
if s := reqs.String(); s != "4" {
t.Errorf("reqs.String() = %q, want \"4\"", s)
}
reqs.Set(-2)
if reqs.i != -2 {
t.Errorf("reqs.i = %v, want -2", reqs.i)
}
}
func TestFloat(t *testing.T) {
reqs := NewFloat("requests-float")
if reqs.f != 0.0 {
t.Errorf("reqs.f = %v, want 0", reqs.f)
}
if reqs != Get("requests-float").(*Float) {
t.Errorf("Get() failed.")
}
reqs.Add(1.5)
reqs.Add(1.25)
if reqs.f != 2.75 {
t.Errorf("reqs.f = %v, want 2.75", reqs.f)
}
if s := reqs.String(); s != "2.75" {
t.Errorf("reqs.String() = %q, want \"4.64\"", s)
}
reqs.Add(-2)
if reqs.f != 0.75 {
t.Errorf("reqs.f = %v, want 0.75", reqs.f)
}
}
func TestString(t *testing.T) {
name := NewString("my-name")
if name.s != "" {
t.Errorf("name.s = %q, want \"\"", name.s)
}
name.Set("Mike")
if name.s != "Mike" {
t.Errorf("name.s = %q, want \"Mike\"", name.s)
}
if s := name.String(); s != "\"Mike\"" {
t.Errorf("reqs.String() = %q, want \"\"Mike\"\"", s)
}
}
func TestMapCounter(t *testing.T) {
colours := NewMap("bike-shed-colours")
colours.Add("red", 1)
colours.Add("red", 2)
colours.Add("blue", 4)
colours.AddFloat("green", 4.125)
if x := colours.m["red"].(*Int).i; x != 3 {
t.Errorf("colours.m[\"red\"] = %v, want 3", x)
}
if x := colours.m["blue"].(*Int).i; x != 4 {
t.Errorf("colours.m[\"blue\"] = %v, want 4", x)
}
if x := colours.m["green"].(*Float).f; x != 4.125 {
t.Errorf("colours.m[\"green\"] = %v, want 3.14", x)
}
// colours.String() should be '{"red":3, "blue":4}',
// though the order of red and blue could vary.
s := colours.String()
var j interface{}
err := json.Unmarshal([]byte(s), &j)
if err != nil {
t.Errorf("colours.String() isn't valid JSON: %v", err)
}
m, ok := j.(map[string]interface{})
if !ok {
t.Error("colours.String() didn't produce a map.")
}
red := m["red"]
x, ok := red.(float64)
if !ok {
t.Error("red.Kind() is not a number.")
}
if x != 3 {
t.Errorf("red = %v, want 3", x)
}
}
func TestFunc(t *testing.T) {
var x interface{} = []string{"a", "b"}
f := Func(func() interface{} { return x })
if s, exp := f.String(), `["a","b"]`; s != exp {
t.Errorf(`f.String() = %q, want %q`, s, exp)
}
x = 17
if s, exp := f.String(), `17`; s != exp {
t.Errorf(`f.String() = %q, want %q`, s, exp)
}
}
|
