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
|
package pflag
import (
"strings"
"testing"
)
func TestBoolFunc(t *testing.T) {
var count int
fn := func(_ string) error {
count++
return nil
}
fset := NewFlagSet("test", ContinueOnError)
fset.BoolFunc("func", "Callback function", fn)
err := fset.Parse([]string{"--func", "--func=1", "--func=false"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if count != 3 {
t.Fatalf("expected 3 calls to the callback, got %d calls", count)
}
}
func TestBoolFuncP(t *testing.T) {
var count int
fn := func(_ string) error {
count++
return nil
}
fset := NewFlagSet("test", ContinueOnError)
fset.BoolFuncP("bfunc", "b", "Callback function", fn)
err := fset.Parse([]string{"--bfunc", "--bfunc=0", "--bfunc=false", "-b", "-b=0"})
if err != nil {
t.Fatal("expected no error; got", err)
}
if count != 5 {
t.Fatalf("expected 5 calls to the callback, got %d calls", count)
}
}
func TestBoolFuncUsage(t *testing.T) {
t.Run("regular func flag", func(t *testing.T) {
// regular boolfunc flag:
// expect to see '--flag1' followed by the usageMessage, and no mention of a default value
fset := NewFlagSet("unittest", ContinueOnError)
fset.BoolFunc("flag1", "usage message", func(s string) error { return nil })
usage := fset.FlagUsagesWrapped(80)
usage = strings.TrimSpace(usage)
expected := "--flag1 usage message"
if usage != expected {
t.Fatalf("unexpected generated usage message\n expected: %s\n got: %s", expected, usage)
}
})
t.Run("func flag with placeholder name", func(t *testing.T) {
// func flag, with a placeholder name:
// if usageMesage contains a placeholder, expect '--flag2 {placeholder}'; still expect no mention of a default value
fset := NewFlagSet("unittest", ContinueOnError)
fset.BoolFunc("flag2", "usage message with `name` placeholder", func(s string) error { return nil })
usage := fset.FlagUsagesWrapped(80)
usage = strings.TrimSpace(usage)
expected := "--flag2 name usage message with name placeholder"
if usage != expected {
t.Fatalf("unexpected generated usage message\n expected: %s\n got: %s", expected, usage)
}
})
}
|
