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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
package flag
import (
"os"
"strconv"
"testing"
)
type flagSet struct {
b bool
f float64
fStr string
i int64
j int64
n uint64
nStr string
s string
}
var opt flagSet
func initFlags() {
Bool(&opt.b, 'b', "bool", false, "bool flag")
String(&opt.fStr, 'f', "f64", "", "float64 flag")
Int64(&opt.i, 'i', "int", 0, "int flag")
Int64(&opt.j, 'j', "", 0, "another int flag")
String(&opt.nStr, 'n', "", "", "uint64 flag")
String(&opt.s, 0, "s-t-r", "", "string flag")
}
func TestEverything(t *testing.T) {
initFlags()
args := os.Args
os.Args = []string{
"test",
"-bf",
"1234.5678",
"--int",
"-12345678",
"-j",
"0",
"-n",
"12345678901",
"--s-t-r",
"lastFlag",
"firstArg",
}
expected := flagSet{
true,
1234.5678,
"1234.5678",
-12345678,
0,
12345678901,
"12345678901",
"lastFlag",
}
if Parse(1) != 11 {
t.Fail()
}
opt.f, _ = strconv.ParseFloat(opt.fStr, 64)
opt.n, _ = strconv.ParseUint(opt.nStr, 10, 64)
if opt != expected {
t.Fail()
}
os.Args = args
}
func TestDeclareInvalidLongFlags(t *testing.T) {
var exitCode int
osExit = func(code int) {
exitCode = code
}
var b bool
Bool(&b, 0, "b", false, "")
if exitCode != 1 {
t.Fail()
}
var i int64
exitCode = 0
Int64(&i, 0, "i", 0, "")
if exitCode != 1 {
t.Fail()
}
var s string
exitCode = 0
String(&s, 0, "s", "", "")
if exitCode != 1 {
t.Fail()
}
osExit = os.Exit
}
func TestShortCircuit(t *testing.T) {
initFlags()
args := os.Args
os.Args = []string{"test", "a"}
if Parse(1) != 1 {
t.Fail()
}
os.Args = []string{"test", "--", "a"}
if Parse(1) != 2 {
t.Fail()
}
os.Args = args
os.Args = args
}
func TestInvalidFlag(t *testing.T) {
initFlags()
args := os.Args
var exitCode int
osExit = func(code int) {
exitCode = code
}
os.Args = []string{"test", "-h"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
initFlags()
exitCode = 0
os.Args = []string{"test", "--help"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
osExit = os.Exit
os.Args = args
}
func TestFlagAfterInt64OrStrFlag(t *testing.T) {
initFlags()
args := os.Args
var exitCode int
osExit = func(code int) {
exitCode = code
}
os.Args = []string{"test", "-ib"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
initFlags()
exitCode = 0
os.Args = []string{"test", "-fb"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
osExit = os.Exit
os.Args = args
}
func TestInvalidInt64AfterInt64Flag(t *testing.T) {
initFlags()
args := os.Args
var exitCode int
osExit = func(code int) {
exitCode = code
}
os.Args = []string{"test", "-i", "1234.5689"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
initFlags()
exitCode = 0
os.Args = []string{"test", "--int", "1234.5689"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
osExit = os.Exit
os.Args = args
}
func TestNothingAfterInt64OrStrFlag(t *testing.T) {
initFlags()
args := os.Args
var exitCode int
osExit = func(code int) {
exitCode = code
}
os.Args = []string{"test", "-b", "--int"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
initFlags()
exitCode = 0
os.Args = []string{"test", "--bool", "--f64"}
Parse(1)
if exitCode != 1 {
t.Fail()
}
osExit = os.Exit
os.Args = args
}
|
