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package cli
import (
"flag"
"os"
"strings"
"testing"
"time"
)
func TestNewContext(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int("myflag", 12, "doc")
set.Int64("myflagInt64", int64(12), "doc")
set.Uint("myflagUint", uint(93), "doc")
set.Uint64("myflagUint64", uint64(93), "doc")
set.Float64("myflag64", float64(17), "doc")
globalSet := flag.NewFlagSet("test", 0)
globalSet.Int("myflag", 42, "doc")
globalSet.Int64("myflagInt64", int64(42), "doc")
globalSet.Uint("myflagUint", uint(33), "doc")
globalSet.Uint64("myflagUint64", uint64(33), "doc")
globalSet.Float64("myflag64", float64(47), "doc")
globalCtx := NewContext(nil, globalSet, nil)
command := Command{Name: "mycommand"}
c := NewContext(nil, set, globalCtx)
c.Command = command
expect(t, c.Int("myflag"), 12)
expect(t, c.Int64("myflagInt64"), int64(12))
expect(t, c.Uint("myflagUint"), uint(93))
expect(t, c.Uint64("myflagUint64"), uint64(93))
expect(t, c.Float64("myflag64"), float64(17))
expect(t, c.GlobalInt("myflag"), 42)
expect(t, c.GlobalInt64("myflagInt64"), int64(42))
expect(t, c.GlobalUint("myflagUint"), uint(33))
expect(t, c.GlobalUint64("myflagUint64"), uint64(33))
expect(t, c.GlobalFloat64("myflag64"), float64(47))
expect(t, c.Command.Name, "mycommand")
}
func TestContext_Int(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int("myflag", 12, "doc")
c := NewContext(nil, set, nil)
expect(t, c.Int("myflag"), 12)
}
func TestContext_Int64(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int64("myflagInt64", 12, "doc")
c := NewContext(nil, set, nil)
expect(t, c.Int64("myflagInt64"), int64(12))
}
func TestContext_Uint(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Uint("myflagUint", uint(13), "doc")
c := NewContext(nil, set, nil)
expect(t, c.Uint("myflagUint"), uint(13))
}
func TestContext_Uint64(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Uint64("myflagUint64", uint64(9), "doc")
c := NewContext(nil, set, nil)
expect(t, c.Uint64("myflagUint64"), uint64(9))
}
func TestContext_GlobalInt(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int("myflag", 12, "doc")
c := NewContext(nil, set, nil)
expect(t, c.GlobalInt("myflag"), 12)
expect(t, c.GlobalInt("nope"), 0)
}
func TestContext_GlobalInt64(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int64("myflagInt64", 12, "doc")
c := NewContext(nil, set, nil)
expect(t, c.GlobalInt64("myflagInt64"), int64(12))
expect(t, c.GlobalInt64("nope"), int64(0))
}
func TestContext_Float64(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Float64("myflag", float64(17), "doc")
c := NewContext(nil, set, nil)
expect(t, c.Float64("myflag"), float64(17))
}
func TestContext_GlobalFloat64(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Float64("myflag", float64(17), "doc")
c := NewContext(nil, set, nil)
expect(t, c.GlobalFloat64("myflag"), float64(17))
expect(t, c.GlobalFloat64("nope"), float64(0))
}
func TestContext_Duration(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Duration("myflag", 12*time.Second, "doc")
c := NewContext(nil, set, nil)
expect(t, c.Duration("myflag"), 12*time.Second)
}
func TestContext_String(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.String("myflag", "hello world", "doc")
c := NewContext(nil, set, nil)
expect(t, c.String("myflag"), "hello world")
}
func TestContext_Bool(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", false, "doc")
c := NewContext(nil, set, nil)
expect(t, c.Bool("myflag"), false)
}
func TestContext_BoolT(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", true, "doc")
c := NewContext(nil, set, nil)
expect(t, c.BoolT("myflag"), true)
}
func TestContext_GlobalBool(t *testing.T) {
set := flag.NewFlagSet("test", 0)
globalSet := flag.NewFlagSet("test-global", 0)
globalSet.Bool("myflag", false, "doc")
globalCtx := NewContext(nil, globalSet, nil)
c := NewContext(nil, set, globalCtx)
expect(t, c.GlobalBool("myflag"), false)
expect(t, c.GlobalBool("nope"), false)
}
func TestContext_GlobalBoolT(t *testing.T) {
set := flag.NewFlagSet("test", 0)
globalSet := flag.NewFlagSet("test-global", 0)
globalSet.Bool("myflag", true, "doc")
globalCtx := NewContext(nil, globalSet, nil)
c := NewContext(nil, set, globalCtx)
expect(t, c.GlobalBoolT("myflag"), true)
expect(t, c.GlobalBoolT("nope"), false)
}
func TestContext_Args(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", false, "doc")
c := NewContext(nil, set, nil)
_ = set.Parse([]string{"--myflag", "bat", "baz"})
expect(t, len(c.Args()), 2)
expect(t, c.Bool("myflag"), true)
}
func TestContext_NArg(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", false, "doc")
c := NewContext(nil, set, nil)
_ = set.Parse([]string{"--myflag", "bat", "baz"})
expect(t, c.NArg(), 2)
}
func TestContext_IsSet(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", false, "doc")
set.String("otherflag", "hello world", "doc")
globalSet := flag.NewFlagSet("test", 0)
globalSet.Bool("myflagGlobal", true, "doc")
globalCtx := NewContext(nil, globalSet, nil)
c := NewContext(nil, set, globalCtx)
_ = set.Parse([]string{"--myflag", "bat", "baz"})
_ = globalSet.Parse([]string{"--myflagGlobal", "bat", "baz"})
expect(t, c.IsSet("myflag"), true)
expect(t, c.IsSet("otherflag"), false)
expect(t, c.IsSet("bogusflag"), false)
expect(t, c.IsSet("myflagGlobal"), false)
}
func TestContext_IsSet_ShortAndFull_FlagNames(t *testing.T) {
var (
numberIsSet, nIsSet bool
tempIsSet, tIsSet bool
usernameIsSet, uIsSet bool
debugIsSet, dIsSet bool
)
a := App {
Flags: []Flag{
IntFlag{Name: "number, n"},
Float64Flag{Name: "temp, t"},
StringFlag{Name: "username, u"},
BoolFlag{Name: "debug, d"},
},
Action: func(ctx *Context) error {
numberIsSet = ctx.IsSet("number")
nIsSet = ctx.IsSet("n")
tempIsSet = ctx.IsSet("temp")
tIsSet = ctx.IsSet("t")
usernameIsSet = ctx.IsSet("username")
uIsSet = ctx.IsSet("u")
debugIsSet = ctx.IsSet("debug")
dIsSet = ctx.IsSet("d")
return nil
},
}
tests := []struct {
args[]string
}{
{args: []string{"", "--number", "5", "--temp", "5.2", "--username", "ajitem", "--debug"}},
{args: []string{"", "-n", "5", "-t", "5.2", "-u", "ajitem", "-d"}},
}
for _, tt := range tests {
_ = a.Run(tt.args)
expect(t, numberIsSet == nIsSet, true)
expect(t, tempIsSet == tIsSet, true)
expect(t, usernameIsSet == uIsSet, true)
expect(t, debugIsSet == dIsSet, true)
}
}
// XXX Corresponds to hack in context.IsSet for flags with EnvVar field
// Should be moved to `flag_test` in v2
func TestContext_IsSet_fromEnv(t *testing.T) {
var (
timeoutIsSet, tIsSet bool
noEnvVarIsSet, nIsSet bool
passwordIsSet, pIsSet bool
unparsableIsSet, uIsSet bool
)
clearenv()
_ = os.Setenv("APP_TIMEOUT_SECONDS", "15.5")
_ = os.Setenv("APP_PASSWORD", "")
a := App{
Flags: []Flag{
Float64Flag{Name: "timeout, t", EnvVar: "APP_TIMEOUT_SECONDS"},
StringFlag{Name: "password, p", EnvVar: "APP_PASSWORD"},
Float64Flag{Name: "unparsable, u", EnvVar: "APP_UNPARSABLE"},
Float64Flag{Name: "no-env-var, n"},
},
Action: func(ctx *Context) error {
timeoutIsSet = ctx.IsSet("timeout")
tIsSet = ctx.IsSet("t")
passwordIsSet = ctx.IsSet("password")
pIsSet = ctx.IsSet("p")
unparsableIsSet = ctx.IsSet("unparsable")
uIsSet = ctx.IsSet("u")
noEnvVarIsSet = ctx.IsSet("no-env-var")
nIsSet = ctx.IsSet("n")
return nil
},
}
_ = a.Run([]string{"run"})
expect(t, timeoutIsSet, true)
expect(t, tIsSet, true)
expect(t, passwordIsSet, true)
expect(t, pIsSet, true)
expect(t, noEnvVarIsSet, false)
expect(t, nIsSet, false)
_ = os.Setenv("APP_UNPARSABLE", "foobar")
_ = a.Run([]string{"run"})
expect(t, unparsableIsSet, false)
expect(t, uIsSet, false)
}
func TestContext_GlobalIsSet(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", false, "doc")
set.String("otherflag", "hello world", "doc")
globalSet := flag.NewFlagSet("test", 0)
globalSet.Bool("myflagGlobal", true, "doc")
globalSet.Bool("myflagGlobalUnset", true, "doc")
globalCtx := NewContext(nil, globalSet, nil)
c := NewContext(nil, set, globalCtx)
_ = set.Parse([]string{"--myflag", "bat", "baz"})
_ = globalSet.Parse([]string{"--myflagGlobal", "bat", "baz"})
expect(t, c.GlobalIsSet("myflag"), false)
expect(t, c.GlobalIsSet("otherflag"), false)
expect(t, c.GlobalIsSet("bogusflag"), false)
expect(t, c.GlobalIsSet("myflagGlobal"), true)
expect(t, c.GlobalIsSet("myflagGlobalUnset"), false)
expect(t, c.GlobalIsSet("bogusGlobal"), false)
}
// XXX Corresponds to hack in context.IsSet for flags with EnvVar field
// Should be moved to `flag_test` in v2
func TestContext_GlobalIsSet_fromEnv(t *testing.T) {
var (
timeoutIsSet, tIsSet bool
noEnvVarIsSet, nIsSet bool
passwordIsSet, pIsSet bool
passwordValue string
unparsableIsSet, uIsSet bool
overrideIsSet, oIsSet bool
overrideValue string
)
clearenv()
_ = os.Setenv("APP_TIMEOUT_SECONDS", "15.5")
_ = os.Setenv("APP_PASSWORD", "badpass")
_ = os.Setenv("APP_OVERRIDE", "overridden")
a := App{
Flags: []Flag{
Float64Flag{Name: "timeout, t", EnvVar: "APP_TIMEOUT_SECONDS"},
StringFlag{Name: "password, p", EnvVar: "APP_PASSWORD"},
Float64Flag{Name: "no-env-var, n"},
Float64Flag{Name: "unparsable, u", EnvVar: "APP_UNPARSABLE"},
StringFlag{Name: "overrides-default, o", Value: "default", EnvVar: "APP_OVERRIDE"},
},
Commands: []Command{
{
Name: "hello",
Action: func(ctx *Context) error {
timeoutIsSet = ctx.GlobalIsSet("timeout")
tIsSet = ctx.GlobalIsSet("t")
passwordIsSet = ctx.GlobalIsSet("password")
pIsSet = ctx.GlobalIsSet("p")
passwordValue = ctx.GlobalString("password")
unparsableIsSet = ctx.GlobalIsSet("unparsable")
uIsSet = ctx.GlobalIsSet("u")
noEnvVarIsSet = ctx.GlobalIsSet("no-env-var")
nIsSet = ctx.GlobalIsSet("n")
overrideIsSet = ctx.GlobalIsSet("overrides-default")
oIsSet = ctx.GlobalIsSet("o")
overrideValue = ctx.GlobalString("overrides-default")
return nil
},
},
},
}
if err := a.Run([]string{"run", "hello"}); err != nil {
t.Logf("error running Run(): %+v", err)
}
expect(t, timeoutIsSet, true)
expect(t, tIsSet, true)
expect(t, passwordIsSet, true)
expect(t, pIsSet, true)
expect(t, passwordValue, "badpass")
expect(t, unparsableIsSet, false)
expect(t, noEnvVarIsSet, false)
expect(t, nIsSet, false)
expect(t, overrideIsSet, true)
expect(t, oIsSet, true)
expect(t, overrideValue, "overridden")
_ = os.Setenv("APP_UNPARSABLE", "foobar")
if err := a.Run([]string{"run"}); err != nil {
t.Logf("error running Run(): %+v", err)
}
expect(t, unparsableIsSet, false)
expect(t, uIsSet, false)
}
func TestContext_NumFlags(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("myflag", false, "doc")
set.String("otherflag", "hello world", "doc")
globalSet := flag.NewFlagSet("test", 0)
globalSet.Bool("myflagGlobal", true, "doc")
globalCtx := NewContext(nil, globalSet, nil)
c := NewContext(nil, set, globalCtx)
_ = set.Parse([]string{"--myflag", "--otherflag=foo"})
_ = globalSet.Parse([]string{"--myflagGlobal"})
expect(t, c.NumFlags(), 2)
}
func TestContext_GlobalFlag(t *testing.T) {
var globalFlag string
var globalFlagSet bool
app := NewApp()
app.Flags = []Flag{
StringFlag{Name: "global, g", Usage: "global"},
}
app.Action = func(c *Context) error {
globalFlag = c.GlobalString("global")
globalFlagSet = c.GlobalIsSet("global")
return nil
}
_ = app.Run([]string{"command", "-g", "foo"})
expect(t, globalFlag, "foo")
expect(t, globalFlagSet, true)
}
func TestContext_GlobalFlagsInSubcommands(t *testing.T) {
subcommandRun := false
parentFlag := false
app := NewApp()
app.Flags = []Flag{
BoolFlag{Name: "debug, d", Usage: "Enable debugging"},
}
app.Commands = []Command{
{
Name: "foo",
Flags: []Flag{
BoolFlag{Name: "parent, p", Usage: "Parent flag"},
},
Subcommands: []Command{
{
Name: "bar",
Action: func(c *Context) error {
if c.GlobalBool("debug") {
subcommandRun = true
}
if c.GlobalBool("parent") {
parentFlag = true
}
return nil
},
},
},
},
}
_ = app.Run([]string{"command", "-d", "foo", "-p", "bar"})
expect(t, subcommandRun, true)
expect(t, parentFlag, true)
}
func TestContext_Set(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int("int", 5, "an int")
c := NewContext(nil, set, nil)
expect(t, c.IsSet("int"), false)
_ = c.Set("int", "1")
expect(t, c.Int("int"), 1)
expect(t, c.IsSet("int"), true)
}
func TestContext_GlobalSet(t *testing.T) {
gSet := flag.NewFlagSet("test", 0)
gSet.Int("int", 5, "an int")
set := flag.NewFlagSet("sub", 0)
set.Int("int", 3, "an int")
pc := NewContext(nil, gSet, nil)
c := NewContext(nil, set, pc)
_ = c.Set("int", "1")
expect(t, c.Int("int"), 1)
expect(t, c.GlobalInt("int"), 5)
expect(t, c.GlobalIsSet("int"), false)
_ = c.GlobalSet("int", "1")
expect(t, c.Int("int"), 1)
expect(t, c.GlobalInt("int"), 1)
expect(t, c.GlobalIsSet("int"), true)
}
func TestCheckRequiredFlags(t *testing.T) {
tdata := []struct {
testCase string
parseInput []string
envVarInput [2]string
flags []Flag
expectedAnError bool
expectedErrorContents []string
}{
{
testCase: "empty",
},
{
testCase: "optional",
flags: []Flag{
StringFlag{Name: "optionalFlag"},
},
},
{
testCase: "required",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
},
expectedAnError: true,
expectedErrorContents: []string{"requiredFlag"},
},
{
testCase: "required_and_present",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
},
parseInput: []string{"--requiredFlag", "myinput"},
},
{
testCase: "required_and_present_via_env_var",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true, EnvVar: "REQUIRED_FLAG"},
},
envVarInput: [2]string{"REQUIRED_FLAG", "true"},
},
{
testCase: "required_and_optional",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
StringFlag{Name: "optionalFlag"},
},
expectedAnError: true,
},
{
testCase: "required_and_optional_and_optional_present",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
StringFlag{Name: "optionalFlag"},
},
parseInput: []string{"--optionalFlag", "myinput"},
expectedAnError: true,
},
{
testCase: "required_and_optional_and_optional_present_via_env_var",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
StringFlag{Name: "optionalFlag", EnvVar: "OPTIONAL_FLAG"},
},
envVarInput: [2]string{"OPTIONAL_FLAG", "true"},
expectedAnError: true,
},
{
testCase: "required_and_optional_and_required_present",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
StringFlag{Name: "optionalFlag"},
},
parseInput: []string{"--requiredFlag", "myinput"},
},
{
testCase: "two_required",
flags: []Flag{
StringFlag{Name: "requiredFlagOne", Required: true},
StringFlag{Name: "requiredFlagTwo", Required: true},
},
expectedAnError: true,
expectedErrorContents: []string{"requiredFlagOne", "requiredFlagTwo"},
},
{
testCase: "two_required_and_one_present",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
StringFlag{Name: "requiredFlagTwo", Required: true},
},
parseInput: []string{"--requiredFlag", "myinput"},
expectedAnError: true,
},
{
testCase: "two_required_and_both_present",
flags: []Flag{
StringFlag{Name: "requiredFlag", Required: true},
StringFlag{Name: "requiredFlagTwo", Required: true},
},
parseInput: []string{"--requiredFlag", "myinput", "--requiredFlagTwo", "myinput"},
},
{
testCase: "required_flag_with_short_name",
flags: []Flag{
StringSliceFlag{Name: "names, N", Required: true},
},
parseInput: []string{"-N", "asd", "-N", "qwe"},
},
{
testCase: "required_flag_with_multiple_short_names",
flags: []Flag{
StringSliceFlag{Name: "names, N, n", Required: true},
},
parseInput: []string{"-n", "asd", "-n", "qwe"},
},
{
testCase: "required_flag_with_short_alias_not_printed_on_error",
expectedAnError: true,
expectedErrorContents: []string{"Required flag \"names\" not set"},
flags: []Flag{
StringSliceFlag{Name: "names, n", Required: true},
},
},
}
for _, test := range tdata {
t.Run(test.testCase, func(t *testing.T) {
// setup
set := flag.NewFlagSet("test", 0)
for _, flags := range test.flags {
flags.Apply(set)
}
_ = set.Parse(test.parseInput)
if test.envVarInput[0] != "" {
os.Clearenv()
_ = os.Setenv(test.envVarInput[0], test.envVarInput[1])
}
ctx := &Context{}
context := NewContext(ctx.App, set, ctx)
context.Command.Flags = test.flags
// logic under test
err := checkRequiredFlags(test.flags, context)
// assertions
if test.expectedAnError && err == nil {
t.Errorf("expected an error, but there was none")
}
if !test.expectedAnError && err != nil {
t.Errorf("did not expected an error, but there was one: %s", err)
}
for _, errString := range test.expectedErrorContents {
if !strings.Contains(err.Error(), errString) {
t.Errorf("expected error %q to contain %q, but it didn't!", err.Error(), errString)
}
}
})
}
}
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