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cli_test.go
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cli_test.go
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package mcli
import (
"bytes"
"flag"
"fmt"
"os"
"reflect"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func resetDefaultApp() {
*defaultApp = *NewApp()
defaultApp.completionCtx.postFunc = func() {}
for _, env := range os.Environ() {
key := strings.SplitN(env, "=", 2)[0]
os.Unsetenv(key)
}
}
func dummyCmd() {
MustParse(nil)
PrintHelp()
}
func dummyCmdWithContext(ctx *Context) {
ctx.Parse(nil, WithErrorHandling(flag.ContinueOnError))
ctx.PrintHelp()
}
func TestAddCommands(t *testing.T) {
resetDefaultApp()
Add("cmd1", dummyCmd, "A cmd1 description")
AddHidden("cmd2", dummyCmd, "A hidden cmd2 description")
AddGroup("group1", "A group1 description")
Add("group1 cmd1", dummyCmd, "A group1 cmd1 description")
Add("group1 cmd2", dummyCmd, "A group1 cmd2 description")
Add("group1 cmd3 sub1", dummyCmd, "A group1 cmd3 sub1 description")
AddHelp()
AddCompletion()
assert.Equal(t, 12, len(defaultApp.cmds))
assert.Nil(t, defaultApp.ctx)
assert.True(t, defaultApp.cmds.isValid("help"))
assert.True(t, defaultApp.cmds.isValid("completion bash"))
assert.True(t, defaultApp.cmds.isValid("completion zsh"))
assert.True(t, defaultApp.cmds.isValid("completion powershell"))
assert.True(t, defaultApp.cmds.isValid("completion fish"))
}
func TestParsing_WithoutCallingRun(t *testing.T) {
resetDefaultApp()
var args struct {
A bool `cli:"-a, -a-flag, description a flag"`
B bool `cli:"-b, description b flag" default:"true"`
C int32 `cli:"-c-flag, description c flag"`
}
MustParse(&args, WithArgs([]string{"-a", "-c-flag", "12345"}))
// assert we do modify the global state
assert.Equal(t, 0, len(defaultApp.cmds))
assert.NotNil(t, defaultApp.ctx)
// assert the arg values
assert.True(t, args.A)
assert.True(t, args.B)
assert.Equal(t, args.C, int32(12345))
}
func TestParsing_CheckFlagSetValues(t *testing.T) {
resetDefaultApp()
var args struct {
A bool `cli:"-a, -a-flag, description a flag"`
A1 bool `cli:"-1, -a1-flag"`
B int32 `cli:"-b, -b-flag, description b flag"`
C int64 `cli:"-c, --c-flag, description c flag"`
D float32 `cli:"-D, --d-flag, description d flag"`
E float64 `cli:"-E, --e-flag, description e flag"`
F string `cli:"-f, -f-flag, description f flag"`
G uint `cli:"-g, --g-flag, description g flag"`
H []bool `cli:"-H, --h-flag, description h flag"`
I []uint `cli:"-i, -i-flag, description i flag"`
J []string `cli:"-j, -j-flag, description j flag"`
K time.Duration `cli:"-k, --k-flag, description k flag"`
ValueImpl2 flagValueImpl2 `cli:"-v, -v-flag, description v flag"`
Args []string `cli:"some-args"`
}
fs, err := Parse(&args, WithArgs([]string{
"-a-flag",
"-1",
"-b", "1",
"-c-flag", "2",
"-D", "3",
"-e-flag", "4",
"-f", "fstr",
"-g-flag", "5",
"-H", "true",
"-H", "F",
"-H", "1",
"-H", "0",
"-i", "5",
"-i-flag", "6",
"-i", "7",
"-i-flag", "8",
"-j-flag", "j1",
"-j-flag", "j2",
"-j-flag", "j,3",
"-j-flag", "j,4,5",
"-k", "1.5s",
"-v", "abc",
"-v", "123",
"some-args 0",
"some-args 1",
}))
assert.Nil(t, err)
assert.Equal(t, true, args.A)
assert.Equal(t, true, args.A1)
assert.Equal(t, int32(1), args.B)
assert.Equal(t, int64(2), args.C)
assert.Equal(t, float32(3), args.D)
assert.Equal(t, float64(4), args.E)
assert.Equal(t, "fstr", args.F)
assert.Equal(t, uint(5), args.G)
assert.Equal(t, []bool{true, false, true, false}, args.H)
assert.Equal(t, []uint{5, 6, 7, 8}, args.I)
assert.Equal(t, []string{"j1", "j2", `j,3`, `j,4,5`}, args.J)
assert.Equal(t, 1500*time.Millisecond, args.K)
assert.Equal(t, []string{"some-args 0", "some-args 1"}, args.Args)
assert.Equal(t, []byte("abc123"), args.ValueImpl2.Data)
flagCount := 13 * 2
fs.Visit(func(flag *flag.Flag) {
flagCount--
})
assert.Zero(t, flagCount)
for _, tt := range []struct {
flag string
want string
value any
}{
{"a", "true", true},
{"a-flag", "true", true},
{"1", "true", true},
{"a1-flag", "true", true},
{"b", "1", int32(1)},
{"b-flag", "1", int32(1)},
{"c", "2", int64(2)},
{"c-flag", "2", int64(2)},
{"D", "3", float32(3)},
{"d-flag", "3", float32(3)},
{"E", "4", float64(4)},
{"e-flag", "4", float64(4)},
{"f", "fstr", "fstr"},
{"f-flag", "fstr", "fstr"},
{"g", "5", uint(5)},
{"g-flag", "5", uint(5)},
{"H", "[true,false,true,false]", []bool{true, false, true, false}},
{"h-flag", "[true,false,true,false]", []bool{true, false, true, false}},
{"i", "[5,6,7,8]", []uint{5, 6, 7, 8}},
{"i-flag", "[5,6,7,8]", []uint{5, 6, 7, 8}},
{"j", `["j1","j2","j,3","j,4,5"]`, []string{"j1", "j2", "j,3", "j,4,5"}},
{"j-flag", `["j1","j2","j,3","j,4,5"]`, []string{"j1", "j2", "j,3", "j,4,5"}},
{"k", "1.5s", 1500 * time.Millisecond},
{"k-flag", "1.5s", 1500 * time.Millisecond},
{"v", "abc123", []byte("abc123")},
{"v-flag", "abc123", []byte("abc123")},
} {
got := fs.Lookup(tt.flag).Value.String()
assert.Equalf(t, tt.want, got, "flag= %v", tt.flag)
gotValue := fs.Lookup(tt.flag).Value.(flag.Getter).Get()
assert.Equalf(t, tt.value, gotValue, "flag= %v", tt.flag)
}
}
func TestParsing_PointerValues(t *testing.T) {
var args struct {
A *bool `cli:"-a, -a-flag, description a flag"`
A1 *bool `cli:"-1, -a1-flag"`
B *int32 `cli:"-b, -b-flag, description b flag"`
C *int64 `cli:"-c, --c-flag, description c flag"`
D *float32 `cli:"-D, --d-flag, description d flag"`
E *float64 `cli:"-E, --e-flag, description e flag"`
F *string `cli:"-f, -f-flag, description f flag"`
G *uint `cli:"-g, --g-flag, description g flag"`
K *time.Duration `cli:"-k, --k-flag, description k flag"`
ValueImpl2 *flagValueImpl2 `cli:"-v, -v-flag, description v flag"`
Arg1 *string `cli:"arg1"`
}
t.Run("all empty", func(t *testing.T) {
resetDefaultApp()
fs, err := Parse(&args, WithArgs([]string{}))
assert.Nil(t, err)
for _, x := range []any{
args.A, args.A1, args.B, args.C, args.D, args.E, args.F, args.G, args.K, args.ValueImpl2,
args.Arg1,
} {
assert.True(t, reflect.ValueOf(x).IsNil())
}
_ = fs
})
t.Run("set flags", func(t *testing.T) {
resetDefaultApp()
fs, err := Parse(&args, WithArgs([]string{
"-a-flag",
"-1=false",
"-b", "1",
"-c-flag", "2",
"--D", "3",
"--e-flag", "4",
"-f", "fstr",
"-g-flag", "5",
"-k", "1.5s",
"-v", "abc",
"-v", "123",
"arg1 value",
}))
assert.Nil(t, err)
assert.True(t, args.A != nil && *args.A)
assert.True(t, args.A1 != nil && !*args.A1)
assert.Equal(t, int32(1), *args.B)
assert.Equal(t, int64(2), *args.C)
assert.Equal(t, float32(3), *args.D)
assert.Equal(t, float64(4), *args.E)
assert.Equal(t, "fstr", *args.F)
assert.Equal(t, uint(5), *args.G)
assert.Equal(t, 1500*time.Millisecond, *args.K)
assert.Equal(t, []byte("abc123"), args.ValueImpl2.Data)
assert.Equal(t, "arg1 value", *args.Arg1)
flagCount := 10 * 2
fs.Visit(func(flag *flag.Flag) {
flagCount--
})
assert.Zero(t, flagCount)
for _, tt := range []struct {
flag string
want string
value any
}{
{"a", "true", true},
{"a-flag", "true", true},
{"1", "false", false},
{"a1-flag", "false", false},
{"b", "1", int32(1)},
{"b-flag", "1", int32(1)},
{"c", "2", int64(2)},
{"c-flag", "2", int64(2)},
{"D", "3", float32(3)},
{"d-flag", "3", float32(3)},
{"E", "4", float64(4)},
{"e-flag", "4", float64(4)},
{"f", "fstr", "fstr"},
{"f-flag", "fstr", "fstr"},
{"g", "5", uint(5)},
{"g-flag", "5", uint(5)},
{"k", "1.5s", 1500 * time.Millisecond},
{"k-flag", "1.5s", 1500 * time.Millisecond},
{"v", "abc123", []byte("abc123")},
{"v-flag", "abc123", []byte("abc123")},
} {
got := fs.Lookup(tt.flag).Value.String()
assert.Equalf(t, tt.want, got, "flag= %v", tt.flag)
gotValue := fs.Lookup(tt.flag).Value.(flag.Getter).Get()
assert.Equalf(t, tt.value, gotValue, "flag= %v", tt.flag)
}
})
t.Run("env and default values", func(t *testing.T) {
var args struct {
A1 *bool `cli:"-a1"` // default false
A2 *bool `cli:"-a2"`
B1 *int `cli:"-b1" default:"1024"`
C1 *string `cli:"-c1" env:"C1_STR"`
C2 *string `cli:"-c2" default:"c2default" env:"C2_STR"`
C3 *string `cli:"-c3" default:"c3default" env:"C3_STR"`
C4 *string `cli:"-c4"`
C5 *string `cli:"-c5"`
D1 *time.Duration `cli:"-d1" default:"1.5s"`
}
resetDefaultApp()
os.Setenv("C1_STR", "c1EnvValue")
os.Setenv("C3_STR", "c3EnvValue")
fs, err := Parse(&args, WithArgs([]string{
"-a2",
"-c3", "c3arg",
"-c4", "c4arg",
}))
_ = fs
assert.Nil(t, err)
assert.True(t, args.A1 == nil)
assert.True(t, *args.A2)
assert.Equal(t, 1024, *args.B1)
assert.Equal(t, "c1EnvValue", *args.C1)
assert.Equal(t, "c2default", *args.C2)
assert.Equal(t, "c3arg", *args.C3)
assert.Equal(t, "c4arg", *args.C4)
assert.True(t, args.C5 == nil)
assert.Equal(t, 1500*time.Millisecond, *args.D1)
})
t.Run("usage", func(t *testing.T) {
var args struct {
A1 *bool `cli:"-a1, a1 description"` // default false
A2 *bool `cli:"-a2 a2 description"`
B1 *int `cli:"-b1, b1 description" default:"1024"`
C1 *string `cli:"-c1" env:"C1_STR"`
C2 *string `cli:"-c2" default:"c2default" env:"C2_STR"`
C3 *string `cli:"-c3" default:"c3default" env:"C3_STR"`
C4 *string `cli:"-c4, a 'c4' value"`
C5 *string `cli:"-c5, c5 description"`
D1 *time.Duration `cli:"-d1" default:"1.5s"`
}
resetDefaultApp()
buf := &bytes.Buffer{}
defaultApp.getFlagSet().SetOutput(buf)
fs, err := Parse(&args,
WithArgs([]string{"-h"}),
WithErrorHandling(flag.ContinueOnError))
_ = fs
assert.Equal(t, flag.ErrHelp, err)
got := buf.String()
want := `
Flags:
-a1 a1 description
-a2 a2 description
-b1 <int> b1 description
[default: 1024]
-c1 <string>
[env: "C1_STR"]
-c2 <string>
[env: "C2_STR"]
[default: "c2default"]
-c3 <string>
[env: "C3_STR"]
[default: "c3default"]
-c4 <c4> a c4 value
-c5 <string> c5 description
-d1 <duration>
[default: 1.5s]
`
assert.Contains(t, got, want)
})
}
func TestParsing_DefaultValues(t *testing.T) {
resetDefaultApp()
var args struct {
A1 bool `cli:"-a1"` // default false
A2 bool `cli:"-a2" default:"true"`
A3 bool `cli:"-a3" default:"true"`
B1 int `cli:"-b1"`
B2 int `cli:"-b2" default:"1024"`
B3 int `cli:"-b3" default:"1024"`
S1 string `cli:"-s1"`
S2 string `cli:"-s2" default:"s2default"`
S3 string `cli:"-s3" default:"s3default"`
Slice1 []string `cli:"-slice1"`
Slice2 []string `cli:"-slice2"`
Arg1 []int `cli:"arg1"`
}
_, err := Parse(&args, WithArgs([]string{
"-a1",
"-a2=0",
"-b2", "2048",
"-s2=s2arg",
"-slice2", "d",
"-slice2", "e",
"-slice2", "f",
"1", "2", "3",
}), WithErrorHandling(flag.ContinueOnError))
assert.Nil(t, err)
assert.Equal(t, true, args.A1)
assert.Equal(t, false, args.A2) // override
assert.Equal(t, true, args.A3) // default
assert.Equal(t, 0, args.B1)
assert.Equal(t, 2048, args.B2) // override
assert.Equal(t, 1024, args.B3) // default
assert.Equal(t, "", args.S1)
assert.Equal(t, "s2arg", args.S2) // override
assert.Equal(t, "s3default", args.S3) // default
assert.Nil(t, args.Slice1)
assert.Equal(t, []string{"d", "e", "f"}, args.Slice2)
assert.Equal(t, []int{1, 2, 3}, args.Arg1) // from input args
}
func TestParse_EnvValues(t *testing.T) {
resetDefaultApp()
var args struct {
A1 bool `cli:"-a1"`
A2 bool `cli:"-a2" default:"true" env:"A2_BOOL, A2_BOOL_1"`
A3 bool `cli:"-a3" default:"true" env:"A3_BOOL, A3_BOOL_1"`
B1 string `cli:"-b1"`
B2 string `cli:"-b2" default:"b2default" env:"B2_STRING"`
B3 string `cli:"-b3" default:"b3default" env:"B3_STRING, B3_STRING_1"`
B4 string `cli:"-b4" default:"b4default" env:"B4_STRING, B4_STRING_1"`
C1 []int `cli:"-c1"`
C2 []int `cli:"-c2"`
}
os.Setenv("A2_BOOL_1", "false")
os.Setenv("B2_STRING", "b2env")
os.Setenv("B3_STRING", "b3env")
fs, err := Parse(&args, WithArgs([]string{
"-a3=0",
"-b3=b3arg",
"-c2=7", "-c2=8", "-c2=9",
}), WithErrorHandling(flag.ContinueOnError))
assert.Nil(t, err)
assert.Equal(t, false, args.A1)
assert.Equal(t, false, args.A2)
assert.Equal(t, false, args.A3)
assert.Equal(t, "", args.B1)
assert.Equal(t, "b2env", args.B2)
assert.Equal(t, "b3arg", args.B3)
assert.Equal(t, "b4default", args.B4)
assert.Equal(t, ([]int)(nil), args.C1)
assert.Equal(t, []int{7, 8, 9}, args.C2)
var buf bytes.Buffer
fs.SetOutput(&buf)
fs.Usage()
got := buf.String()
for _, x := range []string{
" [default: true]",
` [env: "A2_BOOL", "A2_BOOL_1"]`,
` [env: "A3_BOOL", "A3_BOOL_1"]`,
` [default: "b2default"]`,
` [env: "B2_STRING"]`,
` [default: "b3default"]`,
` [env: "B3_STRING", "B3_STRING_1"]`,
} {
_ = x
assert.Contains(t, got, x)
}
}
type SomeCommonFlags struct {
X1 string `cli:"-x x1 description"`
Y1 string `cli:"--y y1 description"`
Z1 string `cli:"-z, --z-flag z1 description"`
// private field will be ignored
private1 string `cli:"--private"`
}
type AnotherCommonArgs struct {
Ignored string `cli:"-i, --ignored"`
}
func TestParsing_TagSyntax(t *testing.T) {
var args struct {
// Modifier
M1 string `cli:"#R, --m1, modifier 1"` // required
M2 string `cli:"#H, --m2 modifier 2"` // hidden
M3 string `cli:"#D, --m3"` // deprecated
// comma separated
A int `cli:"-a, -a-flag description can be separated by spaces"`
B int `cli:"-b, --b-flag description can be separated by spaces"`
C int `cli:"#D, -c, --c-flag, description of 'DVALUE' flag"`
SomeCommonFlags
// manually ignored
AnotherCommonArgs `cli:"-"`
}
resetDefaultApp()
_, err := Parse(&args, WithErrorHandling(flag.ContinueOnError), WithArgs([]string{}))
assert.NotNil(t, err)
assert.Contains(t, err.Error(), "flag is required but not set: -m1")
resetDefaultApp()
_, err = Parse(&args, WithErrorHandling(flag.ContinueOnError), WithArgs([]string{
"-i", "ignoredstr",
}))
assert.NotNil(t, err)
assert.Equal(t, err.Error(), "flag provided but not defined: -i")
resetDefaultApp()
fs, err := Parse(&args, WithErrorHandling(flag.ContinueOnError), WithArgs([]string{
"-m1", "m1str",
"--m2", "m2str",
"-a", "2",
"-b-flag", "3",
"--c-flag", "4",
"-x", "xstr",
"-y", "ystr",
"-z", "zstr",
}))
assert.Nil(t, err)
assert.Equal(t, fs.Lookup("m1").Value.String(), "m1str")
assert.Equal(t, fs.Lookup("m2").Value.String(), "m2str")
assert.Equal(t, fs.Lookup("m3").Value.String(), "")
assert.Equal(t, fs.Lookup("a").Value.String(), "2")
assert.Equal(t, fs.Lookup("b").Value.String(), "3")
assert.Equal(t, fs.Lookup("c-flag").Value.String(), "4")
assert.Equal(t, fs.Lookup("x").Value.String(), "xstr")
assert.Equal(t, fs.Lookup("y").Value.String(), "ystr")
assert.Equal(t, fs.Lookup("z").Value.String(), "zstr")
assert.Nil(t, fs.Lookup("private"))
assert.Nil(t, fs.Lookup("i"))
assert.Nil(t, fs.Lookup("ignored"))
}
func _search(args []string) (ctx *parsingContext, invalidCmdName string, found bool) {
invalidCmdName, found = defaultApp.searchCmd(args)
ctx = defaultApp.getParsingContext()
return
}
func Test_searchCommand(t *testing.T) {
addCommands := func() {
Add("cmd1", dummyCmd, "A cmd1 description")
AddHidden("cmd2", dummyCmd, "A hidden cmd2 description")
AddGroup("group1", "A group1 description")
Add("group1 cmd1", dummyCmd, "A group1 cmd1 description")
Add("group1 cmd2", dummyCmd, "A group1 cmd2 description")
Add("group1 cmd3 sub1", dummyCmd, "A group1 cmd3 sub1 description")
}
resetDefaultApp()
addCommands()
ctx, _, found := _search([]string{"cmd1"})
assert.True(t, found)
assert.Equal(t, "cmd1", ctx.name)
assert.Equal(t, "cmd1", ctx.cmd.Name)
resetDefaultApp()
addCommands()
ctx, _, found = _search([]string{"cmd2", "-h"})
assert.True(t, found)
assert.Equal(t, "cmd2", ctx.name)
assert.Equal(t, "cmd2", ctx.cmd.Name)
resetDefaultApp()
addCommands()
ctx, _, found = _search([]string{"group1"})
assert.True(t, found)
assert.Equal(t, "group1", ctx.name)
resetDefaultApp()
addCommands()
ctx, _, found = _search([]string{"group1", "cmd99"})
assert.True(t, found)
assert.Equal(t, "group1", ctx.cmd.Name)
resetDefaultApp()
addCommands()
ctx, invalidCmdName, found := _search([]string{"cmd9", "sub1", "sub2"})
assert.False(t, found)
assert.Equal(t, "cmd9 sub1 sub2", invalidCmdName)
resetDefaultApp()
addCommands()
ctx, invalidCmdName, found = _search([]string{"group1", "cmd3", "sub2"})
assert.False(t, found)
assert.Nil(t, ctx.cmd)
assert.Equal(t, "group1 cmd3 sub2", invalidCmdName)
assert.Equal(t, "group1 cmd3", ctx.name)
assert.Equal(t, []string{"sub2"}, ctx.ambiguousArgs)
}
func Test_runGroupCommand(t *testing.T) {
resetDefaultApp()
Add("cmd1", dummyCmd, "Dummy cmd1 command")
AddGroup("group1", "Dummy group1 group")
Add("group1 cmd1", dummyCmd, "Dummy group1 cmd1 command")
ctx, _, found := _search([]string{"group1"})
assert.True(t, found)
assert.Equal(t, "group1", ctx.name)
assert.Equal(t, "group1", ctx.cmd.Name)
var buf bytes.Buffer
defaultApp.getParsingContext().getFlagSet().SetOutput(&buf)
ctx.cmd.f()
got := buf.String()
assert.NotContains(t, got, "not a valid command")
for _, x := range []string{
"Dummy group1 group",
"Usage:\n",
"group1 <command> ...",
"Commands:\n",
"cmd1 Dummy group1 cmd1 command",
} {
assert.Contains(t, got, x)
}
}
func Test_runCommandNotFound(t *testing.T) {
resetDefaultApp()
Add("cmd1", dummyCmd, "Dummy cmd1 command")
AddGroup("group1", "Dummy group1 group")
Add("group1 cmd1", dummyCmd, "Dummy group1 cmd1 command")
ctx, invalidCmdName, found := _search([]string{"group2", "cmd99"})
assert.False(t, found)
assert.Nil(t, ctx.cmd)
assert.Equal(t, "group2 cmd99", invalidCmdName)
ctx, _, found = _search([]string{"group1", "cmd99"})
assert.True(t, found)
assert.Equal(t, "group1", ctx.cmd.Name)
assert.Equal(t, "group1", ctx.name)
}
func Test_printAvailableCommands(t *testing.T) {
resetDefaultApp()
Add("config", dummyCmd, "config settings")
Add("start", dummyCmd, "start service")
Add("stop", dummyCmd, "stop service")
AddHidden("setup", dummyCmd, "(internal) setup a test message")
Add("import", dummyCmd, "import data")
Add("purge", dummyCmd, "purge data")
Add("version", dummyCmd, "print version information")
AddGroup("git", "dummy git group")
AddGroup("git remote", "git remote group")
Add("git remote add", dummyCmd, "dummy git remote add command")
Add("git remote rm", dummyCmd, "dummy git remote rm command")
Add("git branch", dummyCmd, "dummy git branch command")
Add("git branch rm", dummyCmd, "dummy git branch rm command")
Add("git branch new", dummyCmd, "dummy git branch new command")
Add("gh pr submit", dummyCmd, "dummy gh pr submit command")
ctx, invalidCmdName, found := _search([]string{})
assert.False(t, found)
assert.Equal(t, "", invalidCmdName)
assert.Nil(t, ctx.cmd)
var buf bytes.Buffer
defaultApp.getFlagSet().SetOutput(&buf)
defaultApp.printUsage()
got := buf.String()
assert.NotContains(t, got, "not a valid command")
for _, x := range []string{
"Usage:\n",
"<command> ...",
"Commands:\n",
"config config settings",
"gh (Use -h to see available sub commands)",
"git dummy git group",
"import import data",
"purge purge data",
"start start service",
"stop stop service",
"version print version information",
} {
assert.Contains(t, got, x)
}
for _, x := range []string{
"git remote",
"git branch",
"gh pr",
} {
assert.NotContains(t, got, x)
}
ctx, invalidCmdName, found = _search([]string{"git"})
assert.True(t, found)
assert.NotNil(t, ctx.cmd)
assert.Equal(t, "", invalidCmdName)
assert.Equal(t, "git", ctx.name)
buf.Reset()
ctx.getFlagSet().SetOutput(&buf)
ctx.cmd.f()
got = buf.String()
want1 := "dummy git group\n\nUsage:\n mcli.test"
want2 := ` git <command> ...
Commands:
branch dummy git branch command
new dummy git branch new command
rm dummy git branch rm command
remote git remote group
add dummy git remote add command
rm dummy git remote rm command
`
assert.Contains(t, got, want1)
assert.Contains(t, got, want2)
ctx, invalidCmdName, found = _search([]string{"gh", "pr", "-h"})
assert.False(t, found)
assert.Nil(t, ctx.cmd)
assert.Equal(t, "", invalidCmdName)
assert.Equal(t, "gh pr", ctx.name)
assert.Equal(t, 0, len(ctx.ambiguousArgs))
buf.Reset()
defaultApp.getFlagSet().SetOutput(&buf)
defaultApp.printUsage()
got = buf.String()
assert.NotContains(t, got, "not a valid command")
assert.NotContains(t, got, "git branch")
assert.NotContains(t, got, "git remote")
assert.Contains(t, got, "gh pr submit")
}
type flagValueImpl1 []byte
func (f flagValueImpl1) String() string {
return "flagValueImpl1"
}
func (f flagValueImpl1) Set(s string) error {
fmt.Printf("flagValueImpl1 setting %q\n", s)
return nil
}
type flagValueImpl2 struct {
Data []byte
}
func (f *flagValueImpl2) Get() any {
return f.Data
}
func (f *flagValueImpl2) String() string {
if f == nil {
return ""
}
return string(f.Data)
}
func (f *flagValueImpl2) Set(s string) error {
f.Data = append(f.Data, s...)
return nil
}
func TestParse_FlagValue(t *testing.T) {
resetDefaultApp()
var args struct {
A flagValueImpl1 `cli:"-a"`
B flagValueImpl2 `cli:"-b"`
}
_, err := Parse(&args, WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"-a", "1234", "-b", "abcd"}))
assert.Nil(t, err)
assert.Equal(t, []byte("abcd"), args.B.Data)
}
type SomeComplexType struct {
A, B int64
}
func TestParse_RootCmdFlagValue(t *testing.T) {
resetDefaultApp()
defaultApp.AddCompletion()
defaultApp.EnableFlagCompletionForAllCommands = true
var args struct {
A string `cli:"-a, --a-flag, description a flag"`
B string `cli:"-b, --b-flag, description b flag"`
C bool `cli:"-c, --c-flag, description c flag"`
V []string `cli:"value"`
}
_, err := Parse(&args,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"value", "-b", "alfa", "-a", "abcd", "-c"}),
WithArgCompFuncs(map[string]ArgCompletionFunc{
"value": commandArguments,
}),
)
assert.Nil(t, err)
assert.Equal(t, "abcd", args.A)
assert.Equal(t, "alfa", args.B)
assert.Equal(t, true, args.C)
assert.Equal(t, []string{"value"}, args.V)
resetDefaultApp()
defaultApp.AddCompletion()
defaultApp.EnableFlagCompletionForAllCommands = true
args.A = ""
args.B = ""
args.C = false
args.V = []string{}
_, err = Parse(&args,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"other", "value", "-c", "-b", "alfa", "-a", "abcd"}),
WithArgCompFuncs(map[string]ArgCompletionFunc{
"value": commandArguments,
}),
)
assert.Nil(t, err)
assert.Equal(t, "abcd", args.A)
assert.Equal(t, "alfa", args.B)
assert.Equal(t, true, args.C)
assert.Equal(t, []string{"other", "value"}, args.V)
resetDefaultApp()
defaultApp.AddCompletion()
defaultApp.EnableFlagCompletionForAllCommands = true
args.A = ""
args.B = ""
args.C = false
args.V = []string{}
_, err = Parse(&args,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"any", "other", "value", "-b", "alfa", "-c", "-a", "abcd"}),
WithArgCompFuncs(map[string]ArgCompletionFunc{
"value": commandArguments,
}),
)
assert.Nil(t, err)
assert.Equal(t, "abcd", args.A)
assert.Equal(t, "alfa", args.B)
assert.Equal(t, true, args.C)
assert.Equal(t, []string{"any", "other", "value"}, args.V)
resetDefaultApp()
defaultApp.AddCompletion()
defaultApp.EnableFlagCompletionForAllCommands = true
args.A = ""
args.B = ""
args.C = false
args.V = []string{}
_, err = Parse(&args,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"more", "any", "other", "value", "-b", "alfa", "-a", "abcd", "-c"}),
WithArgCompFuncs(map[string]ArgCompletionFunc{
"value": commandArguments,
}),
)
assert.Nil(t, err)
assert.Equal(t, "abcd", args.A)
assert.Equal(t, "alfa", args.B)
assert.Equal(t, true, args.C)
assert.Equal(t, []string{"more", "any", "other", "value"}, args.V)
}
func TestParse_RootCmdFlagValueAndGlobalFlags(t *testing.T) {
resetDefaultApp()
defaultApp.AddCompletion()
defaultApp.EnableFlagCompletionForAllCommands = true
var GlobalFlags struct {
Env string `cli:"-E, --env, Environment to choose (default is dev)" default:"dev"`
Debug bool `cli:"-d, --debug, Debug logs flag"`
Trace bool `cli:"-t, --trace, Trace logs flag"`
Ignore bool `cli:"-i, --ignore-process, Ignore locally running process"`
}
defaultApp.SetGlobalFlags(&GlobalFlags)
var args struct {
A string `cli:"-a, --a-flag, description a flag"`
B string `cli:"-b, --b-flag, description b flag"`
C bool `cli:"-c, --c-flag, description c flag"`
V []string `cli:"value"`
}
_, err := Parse(&args,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"value", "-b", "alfa", "-i", "-a", "abcd", "-c", "-d"}),
WithArgCompFuncs(map[string]ArgCompletionFunc{
"value": commandArguments,
}),
)
assert.Nil(t, err)
assert.Equal(t, "abcd", args.A)
assert.Equal(t, "alfa", args.B)
assert.Equal(t, true, args.C)
assert.Equal(t, []string{"value"}, args.V)
assert.Equal(t, "dev", GlobalFlags.Env)
assert.Equal(t, true, GlobalFlags.Debug)
assert.Equal(t, false, GlobalFlags.Trace)
assert.Equal(t, true, GlobalFlags.Ignore)
}
func TestParse_UnsupportedType(t *testing.T) {
resetDefaultApp()
var args1 struct {
C *SomeComplexType `cli:"-c"`
}
for _, args := range []any{&args1} {
assert.Panics(t, func() {
Parse(args)
})
}
}
func TestShowHidden(t *testing.T) {
addCommands := func() {
Add("cmd1", dummyCmd, "A cmd1 description")
AddHidden("cmd2", dummyCmd, "A hidden cmd2 description")
AddGroup("group1", "A group1 description")
Add("group1 cmd1", dummyCmd, "A group1 cmd1 description")
Add("group1 cmd2", dummyCmd, "A group1 cmd2 description")
Add("group1 cmd3 sub1", dummyCmd, "A group1 cmd3 sub1 description")
AddHidden("group1 cmd4", dummyCmd, "A group1 cmd4 hidden command")
}
resetDefaultApp()
addCommands()
fs, err := Parse(&struct{}{},
WithErrorHandling(flag.ContinueOnError),
WithName("group1"),
WithArgs([]string{"-mcli-show-hidden"}))
assert.Nil(t, err)
assert.Equal(t, "true", fs.Lookup(showHiddenFlag).Value.String())
var buf bytes.Buffer
fs.SetOutput(&buf)
fs.Usage()
got := buf.String()
assert.Contains(t, got, "cmd4 (HIDDEN) A group1 cmd4 hidden command")
resetDefaultApp()
addCommands()
var args struct {
HiddenFlag1 string `cli:"#H, -a1"`
}
fs, err = Parse(&args,
WithErrorHandling(flag.ContinueOnError),
WithName("group1 cmd1"),
WithArgs([]string{"-mcli-show-hidden"}))
assert.Nil(t, err)
assert.Equal(t, "true", fs.Lookup(showHiddenFlag).Value.String())
buf.Reset()
fs.SetOutput(&buf)
fs.Usage()
got = buf.String()
assert.Contains(t, got, "-a1 <string> [HIDDEN]")
}
func TestReorderFlags(t *testing.T) {
type args struct {
Name string `cli:"-n, --name, Who do you want to say to" default:"tom"`
Text string `cli:"#R, text, The 'message' you want to send"`
}
resetDefaultApp()
args1 := &args{}
fs, err := Parse(args1,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"hello", "-n", "Daniel"}))
assert.Nil(t, err)
assert.Equal(t, "Daniel", args1.Name)
assert.Equal(t, "hello", args1.Text)
assert.Equal(t, []string{"hello"}, fs.Args())
resetDefaultApp()
args2 := &args{}
fs, err = Parse(args2,
WithErrorHandling(flag.ContinueOnError),
WithArgs([]string{"-n", "Daniel", "hello"}))
assert.Nil(t, err)
assert.Equal(t, "Daniel", args1.Name)
assert.Equal(t, "hello", args1.Text)
assert.Equal(t, []string{"hello"}, fs.Args())
}
func TestApp_AllowPosixSTMO(t *testing.T) {
var args1 struct {
ABool bool `cli:"-a, --abool, axxx"`
BBool bool `cli:"-b, --bbool, bxxx"`
CBool bool `cli:"-c, --cbool, cxxx"`
DStr string `cli:"-d, --dstr, dxxx"`
EBool bool `cli:"-e, -ebool, exxx"`
}
resetDefaultApp()
defaultApp.AllowPosixSTMO = true