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app_test.go
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app_test.go
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package kingpin
import (
"github.com/stretchr/testify/assert"
"testing"
"time"
)
func TestCommander(t *testing.T) {
c := New("test", "test")
ping := c.Command("ping", "Ping an IP address.")
pingTTL := ping.Flag("ttl", "TTL for ICMP packets").Short('t').Default("5s").Duration()
selected, err := c.Parse([]string{"ping"})
assert.NoError(t, err)
assert.Equal(t, "ping", selected)
assert.Equal(t, 5*time.Second, *pingTTL)
selected, err = c.Parse([]string{"ping", "--ttl=10s"})
assert.NoError(t, err)
assert.Equal(t, "ping", selected)
assert.Equal(t, 10*time.Second, *pingTTL)
}
func TestRequiredFlags(t *testing.T) {
c := New("test", "test")
c.Flag("a", "a").String()
c.Flag("b", "b").Required().String()
_, err := c.Parse([]string{"--a=foo"})
assert.Error(t, err)
_, err = c.Parse([]string{"--b=foo"})
assert.NoError(t, err)
}
func TestInvalidDefaultFlagValueErrors(t *testing.T) {
c := New("test", "test")
c.Flag("foo", "foo").Default("a").Int()
_, err := c.Parse([]string{})
assert.Error(t, err)
}
func TestInvalidDefaultArgValueErrors(t *testing.T) {
c := New("test", "test")
cmd := c.Command("cmd", "cmd")
cmd.Arg("arg", "arg").Default("one").Int()
_, err := c.Parse([]string{"cmd"})
assert.Error(t, err)
}
func TestArgsRequiredAfterNonRequiredErrors(t *testing.T) {
c := New("test", "test")
cmd := c.Command("cmd", "")
cmd.Arg("a", "a").String()
cmd.Arg("b", "b").Required().String()
_, err := c.Parse([]string{})
assert.Error(t, err)
}
func TestArgsMultipleRequiredThenNonRequired(t *testing.T) {
c := New("test", "test")
cmd := c.Command("cmd", "")
cmd.Arg("a", "a").Required().String()
cmd.Arg("b", "b").Required().String()
cmd.Arg("c", "c").String()
cmd.Arg("d", "d").String()
assert.NotPanics(t, func() { c.Parse([]string{}) })
}
func TestDispatchCallbackIsCalled(t *testing.T) {
dispatched := false
c := New("test", "")
c.Command("cmd", "").Dispatch(func(*ParseContext) error {
dispatched = true
return nil
})
_, err := c.Parse([]string{"cmd"})
assert.NoError(t, err)
assert.True(t, dispatched)
}
func TestTopLevelArgWorks(t *testing.T) {
c := New("test", "test")
s := c.Arg("arg", "help").String()
_, err := c.Parse([]string{"foo"})
assert.NoError(t, err)
assert.Equal(t, "foo", *s)
}
func TestTopLevelArgCantBeUsedWithCommands(t *testing.T) {
c := New("test", "test")
c.Arg("arg", "help").String()
c.Command("cmd", "help")
_, err := c.Parse([]string{})
assert.Error(t, err)
}
func TestTooManyArgs(t *testing.T) {
a := New("test", "test")
a.Arg("a", "").String()
assert.NoError(t, a.init())
context := Tokenize([]string{"a", "b"})
_, err := a.parse(context)
assert.NoError(t, err)
assert.Equal(t, Tokens{&Token{TokenArg, "b"}}, context.Tokens)
_, err = a.Parse([]string{"a", "b"})
assert.Error(t, err)
}
func TestTooManyArgsAfterCommand(t *testing.T) {
a := New("test", "test")
a.Command("a", "")
assert.NoError(t, a.init())
context := Tokenize([]string{"a", "b"})
_, err := a.parse(context)
assert.NoError(t, err)
assert.Equal(t, Tokens{&Token{TokenArg, "b"}}, context.Tokens)
_, err = a.Parse([]string{"a", "b"})
assert.Error(t, err)
}
func TestArgsLooksLikeFlagsWithConsumeRemainder(t *testing.T) {
a := New("test", "")
a.Arg("opts", "").Required().Strings()
_, err := a.Parse([]string{"hello", "-world"})
assert.Error(t, err)
}