Files
urfave-cli/flag_bool_with_inverse_test.go
dualfroz 544f3ffc57 fix: use prefixFor for BoolWithInverseFlag names and aliases
BoolWithInverseFlag.String picked - or -- with len(name) == 1, which counts bytes, while the rest of the library uses prefixFor, which counts runes. a one-character non-ascii name or alias was shown as --ü in its help and as -ü for any other flag.
2026-10-07 19:37:46 +02:00

619 lines
13 KiB
Go

package cli
import (
"context"
"fmt"
"io"
"strings"
"testing"
"github.com/stretchr/testify/require"
)
var errBothEnvFlagsAreSet = fmt.Errorf("cannot set both flags `--env` and `--no-env`")
type boolWithInverseTestCase struct {
args []string
toBeSet bool
value bool
err error
envVars map[string]string
}
func (tc *boolWithInverseTestCase) Run(t *testing.T, flagWithInverse *BoolWithInverseFlag) error {
cmd := &Command{
Flags: []Flag{flagWithInverse},
Action: func(context.Context, *Command) error { return nil },
}
for key, val := range tc.envVars {
t.Setenv(key, val)
}
err := cmd.Run(buildTestContext(t), append([]string{"prog"}, tc.args...))
if err != nil {
return err
}
if flagWithInverse.IsSet() != tc.toBeSet {
return fmt.Errorf("flag should be set %t, but got %t", tc.toBeSet, flagWithInverse.IsSet())
}
if flagWithInverse.Get() != tc.value {
return fmt.Errorf("flag value should be %t, but got %t", tc.value, flagWithInverse.Get())
}
return nil
}
func runBoolWithInverseFlagTests(t *testing.T, newFlagMethod func() *BoolWithInverseFlag, cases []*boolWithInverseTestCase) error {
for _, tc := range cases {
t.Run(strings.Join(tc.args, " ")+fmt.Sprintf("%[1]v %[2]v %[3]v", tc.value, tc.toBeSet, tc.err), func(t *testing.T) {
r := require.New(t)
fl := newFlagMethod()
err := tc.Run(t, fl)
if err != nil && tc.err == nil {
r.NoError(err)
}
if err == nil && tc.err != nil {
r.Error(err)
}
if err != nil && tc.err != nil {
r.ErrorContains(err, tc.err.Error())
}
})
}
return nil
}
func TestBoolWithInverseBasic(t *testing.T) {
flagMethod := func() *BoolWithInverseFlag {
return &BoolWithInverseFlag{
Name: "env",
}
}
testCases := []*boolWithInverseTestCase{
{
args: []string{"--no-env"},
toBeSet: true,
value: false,
},
{
args: []string{"--env"},
toBeSet: true,
value: true,
},
{
toBeSet: false,
value: false,
},
{
args: []string{"--env", "--no-env"},
err: errBothEnvFlagsAreSet,
},
}
err := runBoolWithInverseFlagTests(t, flagMethod, testCases)
if err != nil {
t.Error(err)
return
}
}
func TestBoolWithInverseAction(t *testing.T) {
err := fmt.Errorf("action called")
flagMethod := func() *BoolWithInverseFlag {
bif := &BoolWithInverseFlag{
Name: "env",
// Setting env to the opposite to test flag Action is working as intended
Action: func(_ context.Context, cmd *Command, value bool) error {
return err
},
}
return bif
}
testCases := []*boolWithInverseTestCase{
{
args: []string{"--no-env"},
toBeSet: true,
value: false,
err: err,
},
{
args: []string{"--env"},
toBeSet: true,
value: true,
err: err,
},
// This test is not inverse because the flag action is never called
{
toBeSet: false,
value: false,
},
{
args: []string{"--env", "--no-env"},
err: errBothEnvFlagsAreSet,
},
}
errr := runBoolWithInverseFlagTests(t, flagMethod, testCases)
if errr != nil {
t.Error(errr)
return
}
}
func TestBoolWithInverseAlias(t *testing.T) {
flagMethod := func() *BoolWithInverseFlag {
return &BoolWithInverseFlag{
Name: "env",
Aliases: []string{"e", "do-env"},
}
}
testCases := []*boolWithInverseTestCase{
{
args: []string{"--no-e"},
toBeSet: true,
value: false,
},
{
args: []string{"--e"},
toBeSet: true,
value: true,
},
{
toBeSet: false,
value: false,
},
{
args: []string{"--do-env", "--no-do-env"},
err: errBothEnvFlagsAreSet,
},
}
err := runBoolWithInverseFlagTests(t, flagMethod, testCases)
if err != nil {
t.Error(err)
return
}
}
func TestBoolWithInverseEnvVars(t *testing.T) {
flagMethod := func() *BoolWithInverseFlag {
return &BoolWithInverseFlag{
Name: "env",
Sources: EnvVars("ENV", "NO-ENV"),
Local: true,
}
}
testCases := []*boolWithInverseTestCase{
{
toBeSet: true,
value: false,
envVars: map[string]string{
"NO-ENV": "false",
},
},
{
toBeSet: true,
value: true,
envVars: map[string]string{
"ENV": "true",
},
},
{
toBeSet: true,
value: false,
envVars: map[string]string{
"ENV": "false",
},
},
{
toBeSet: false,
value: false,
},
// TODO
/*{
err: errBothEnvFlagsAreSet,
envVars: map[string]string{
"ENV": "true",
"NO-ENV": "true",
},
},*/
{
err: fmt.Errorf("could not parse \"true_env\" as bool value from environment variable \"ENV\" for flag env: parse error"),
envVars: map[string]string{
"ENV": "true_env",
},
},
{
err: fmt.Errorf("could not parse \"false_env\" as bool value from environment variable \"NO-ENV\" for flag env: parse error"),
envVars: map[string]string{
"NO-ENV": "false_env",
},
},
}
err := runBoolWithInverseFlagTests(t, flagMethod, testCases)
if err != nil {
t.Error(err)
return
}
}
func TestBoolWithInverseWithPrefix(t *testing.T) {
flagMethod := func() *BoolWithInverseFlag {
return &BoolWithInverseFlag{
Name: "env",
InversePrefix: "without-",
}
}
testCases := []*boolWithInverseTestCase{
{
args: []string{"--without-env"},
toBeSet: true,
value: false,
},
{
args: []string{"--env"},
toBeSet: true,
value: true,
},
{
toBeSet: false,
value: false,
},
{
args: []string{"--env", "--without-env"},
err: fmt.Errorf("cannot set both flags `--env` and `--without-env`"),
},
{
args: []string{"--without-env", "--env"},
err: fmt.Errorf("cannot set both flags `--env` and `--without-env`"),
},
}
err := runBoolWithInverseFlagTests(t, flagMethod, testCases)
if err != nil {
t.Error(err)
return
}
}
func TestBoolWithInverseRequired(t *testing.T) {
flagMethod := func() *BoolWithInverseFlag {
return &BoolWithInverseFlag{
Name: "env",
Required: true,
}
}
testCases := []*boolWithInverseTestCase{
{
args: []string{"--no-env"},
toBeSet: true,
value: false,
},
{
args: []string{"--env"},
toBeSet: true,
value: true,
},
{
args: []string{"--env", "--no-env"},
err: errBothEnvFlagsAreSet,
},
}
err := runBoolWithInverseFlagTests(t, flagMethod, testCases)
if err != nil {
t.Error(err)
return
}
}
func TestBoolWithInverseNames(t *testing.T) {
flag := &BoolWithInverseFlag{
Name: "env",
Required: true,
}
names := flag.Names()
require.Len(t, names, 2)
require.Equal(t, "env", names[0], "expected first name to be `env`")
require.Equal(t, "no-env", names[1], "expected first name to be `no-env`")
var d DocGenerationFlag = flag
require.Equal(t, "bool", d.TypeName())
}
func TestBoolWithInverseDefaultText(t *testing.T) {
require.Equal(t, "false", (&BoolWithInverseFlag{}).GetDefaultText())
require.Equal(t, "true", (&BoolWithInverseFlag{Value: true}).GetDefaultText())
require.Equal(t, "auto", (&BoolWithInverseFlag{DefaultText: "auto"}).GetDefaultText())
}
func TestBoolWithInverseString(t *testing.T) {
tcs := []struct {
testName string
flagName string
required bool
usage string
inversePrefix string
aliases []string
expected string
}{
{
testName: "empty inverse prefix no flag",
flagName: "",
required: true,
expected: "--[no-]\t",
},
{
testName: "single-char flag name",
flagName: "e",
required: true,
expected: "-[no-]e\t",
},
{
testName: "single-char multibyte flag name",
flagName: "ü",
required: true,
expected: "-[no-]ü\t",
},
{
testName: "multi-char flag name",
flagName: "env",
required: true,
expected: "--[no-]env\t",
},
{
testName: "required with usage",
flagName: "env",
required: true,
usage: "env usage",
expected: "--[no-]env\tenv usage",
},
{
testName: "required without usage",
flagName: "env",
required: true,
expected: "--[no-]env\t",
},
{
testName: "not required with default usage",
flagName: "env",
required: false,
expected: "--[no-]env\t(default: false)",
},
{
testName: "custom inverse prefix",
flagName: "env",
required: true,
inversePrefix: "nope-",
expected: "--[nope-]env\t",
},
{
testName: "empty inverse prefix",
flagName: "env",
required: true,
expected: "--[no-]env\t",
},
{
testName: "short alias",
flagName: "color",
required: false,
aliases: []string{"c"},
expected: "--[no-]color, -c\t(default: false)",
},
{
testName: "short multibyte alias",
flagName: "color",
required: false,
aliases: []string{"ü"},
expected: "--[no-]color, -ü\t(default: false)",
},
{
testName: "long alias",
flagName: "color",
required: false,
aliases: []string{"colour"},
expected: "--[no-]color, --colour\t(default: false)",
},
{
testName: "multiple aliases",
flagName: "color",
required: false,
aliases: []string{"c", "colour"},
expected: "--[no-]color, -c, --colour\t(default: false)",
},
}
for _, tc := range tcs {
t.Run(tc.testName, func(t *testing.T) {
flag := &BoolWithInverseFlag{
Name: tc.flagName,
Usage: tc.usage,
Required: tc.required,
InversePrefix: tc.inversePrefix,
Aliases: tc.aliases,
}
require.Equal(t, tc.expected, flag.String())
})
}
}
func TestBoolWithInverseDestination(t *testing.T) {
destination := new(bool)
count := new(int)
flagMethod := func() *BoolWithInverseFlag {
return &BoolWithInverseFlag{
Name: "env",
Destination: destination,
Config: BoolConfig{
Count: count,
},
}
}
checkAndReset := func(expectedCount int, expectedValue bool) error {
if *count != expectedCount {
return fmt.Errorf("expected count to be %d, got %d", expectedCount, *count)
}
if *destination != expectedValue {
return fmt.Errorf("expected destination to be %t, got %t", expectedValue, *destination)
}
*count = 0
*destination = false
return nil
}
err := (&boolWithInverseTestCase{
args: []string{"--env"},
toBeSet: true,
value: true,
}).Run(t, flagMethod())
if err != nil {
t.Error(err)
return
}
err = checkAndReset(1, true)
if err != nil {
t.Error(err)
return
}
err = (&boolWithInverseTestCase{
args: []string{"--no-env"},
toBeSet: true,
value: false,
}).Run(t, flagMethod())
if err != nil {
t.Error(err)
return
}
err = checkAndReset(1, false)
if err != nil {
t.Error(err)
return
}
err = (&boolWithInverseTestCase{
args: []string{},
toBeSet: false,
value: false,
}).Run(t, flagMethod())
if err != nil {
t.Error(err)
return
}
err = checkAndReset(0, false)
if err != nil {
t.Error(err)
return
}
f := flagMethod()
f.Value = true
err = (&boolWithInverseTestCase{
args: []string{},
toBeSet: false,
value: true,
}).Run(t, f)
if err != nil {
t.Error(err)
return
}
err = checkAndReset(0, true)
if err != nil {
t.Error(err)
return
}
}
func TestBoolWithInverseFlag_SatisfiesRequiredFlagInterface(t *testing.T) {
var f RequiredFlag = &BoolWithInverseFlag{}
_ = f.IsRequired()
}
func TestBoolWithInverseFlag_SatisfiesVisibleFlagInterface(t *testing.T) {
var f VisibleFlag = &BoolWithInverseFlag{}
_ = f.IsVisible()
}
// TestBoolWithInverseFlagStringNoPanicWithNoTabStringer is a regression test for
// https://github.com/urfave/cli/issues/2303.
// BoolWithInverseFlag.String() panicked with "slice bounds out of range [-1:]"
// when the FlagStringer returned a string without a tab character.
func TestBoolWithInverseFlagStringNoPanicWithNoTabStringer(t *testing.T) {
orig := FlagStringer
defer func() { FlagStringer = orig }()
FlagStringer = func(f Flag) string {
return "no tab here"
}
flag := &BoolWithInverseFlag{
Name: "verbose",
}
// Must not panic.
got := flag.String()
if !strings.Contains(got, "verbose") {
t.Errorf("expected String() to contain the flag name, got %q", got)
}
}
func TestBoolWithInverseFlagCount(t *testing.T) {
for _, externalCount := range []bool{false, true} {
for _, onlyOnce := range []bool{false, true} {
for _, name := range []string{"--env", "--no-env", "-e", "--no-e"} {
t.Run(fmt.Sprintf("external=%v/onlyOnce=%v/%s", externalCount, onlyOnce, name), func(t *testing.T) {
const initialCount = 7
count := initialCount
fl := &BoolWithInverseFlag{Name: "env", Aliases: []string{"e"}, OnlyOnce: onlyOnce}
if externalCount {
fl.Config.Count = &count
}
cmd := &Command{Flags: []Flag{fl}, Writer: io.Discard, ErrWriter: io.Discard}
err := cmd.Run(buildTestContext(t), []string{"prog", name, name})
wantCount := 2
if onlyOnce {
require.ErrorContains(t, err, "can't duplicate this flag")
wantCount = 1
} else {
require.NoError(t, err)
}
require.Equal(t, wantCount, fl.Count())
if externalCount {
require.Equal(t, initialCount+wantCount, count)
}
})
}
}
}
}