405 lines
11 KiB
Go
405 lines
11 KiB
Go
package kingpin
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import (
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"io/ioutil"
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"github.com/stretchr/testify/assert"
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"sort"
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"strings"
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"testing"
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"time"
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)
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func newTestApp() *Application {
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return New("test", "").Terminate(nil)
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}
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func TestCommander(t *testing.T) {
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c := newTestApp()
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ping := c.Command("ping", "Ping an IP address.")
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pingTTL := ping.Flag("ttl", "TTL for ICMP packets").Short('t').Default("5s").Duration()
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selected, err := c.Parse([]string{"ping"})
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assert.NoError(t, err)
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assert.Equal(t, "ping", selected)
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assert.Equal(t, 5*time.Second, *pingTTL)
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selected, err = c.Parse([]string{"ping", "--ttl=10s"})
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assert.NoError(t, err)
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assert.Equal(t, "ping", selected)
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assert.Equal(t, 10*time.Second, *pingTTL)
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}
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func TestRequiredFlags(t *testing.T) {
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c := newTestApp()
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c.Flag("a", "a").String()
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c.Flag("b", "b").Required().String()
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_, err := c.Parse([]string{"--a=foo"})
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assert.Error(t, err)
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_, err = c.Parse([]string{"--b=foo"})
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assert.NoError(t, err)
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}
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func TestRepeatableFlags(t *testing.T) {
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c := newTestApp()
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c.Flag("a", "a").String()
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c.Flag("b", "b").Strings()
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_, err := c.Parse([]string{"--a=foo", "--a=bar"})
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assert.Error(t, err)
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_, err = c.Parse([]string{"--b=foo", "--b=bar"})
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assert.NoError(t, err)
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}
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func TestInvalidDefaultFlagValueErrors(t *testing.T) {
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c := newTestApp()
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c.Flag("foo", "foo").Default("a").Int()
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_, err := c.Parse([]string{})
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assert.Error(t, err)
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}
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func TestInvalidDefaultArgValueErrors(t *testing.T) {
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c := newTestApp()
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cmd := c.Command("cmd", "cmd")
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cmd.Arg("arg", "arg").Default("one").Int()
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_, err := c.Parse([]string{"cmd"})
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assert.Error(t, err)
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}
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func TestArgsRequiredAfterNonRequiredErrors(t *testing.T) {
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c := newTestApp()
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cmd := c.Command("cmd", "")
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cmd.Arg("a", "a").String()
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cmd.Arg("b", "b").Required().String()
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_, err := c.Parse([]string{"cmd"})
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assert.Error(t, err)
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}
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func TestArgsMultipleRequiredThenNonRequired(t *testing.T) {
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c := newTestApp().Writer(ioutil.Discard)
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cmd := c.Command("cmd", "")
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cmd.Arg("a", "a").Required().String()
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cmd.Arg("b", "b").Required().String()
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cmd.Arg("c", "c").String()
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cmd.Arg("d", "d").String()
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_, err := c.Parse([]string{"cmd", "a", "b"})
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assert.NoError(t, err)
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_, err = c.Parse([]string{})
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assert.Error(t, err)
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}
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func TestDispatchCallbackIsCalled(t *testing.T) {
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dispatched := false
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c := newTestApp()
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c.Command("cmd", "").Action(func(*ParseContext) error {
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dispatched = true
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return nil
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})
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_, err := c.Parse([]string{"cmd"})
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assert.NoError(t, err)
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assert.True(t, dispatched)
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}
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func TestTopLevelArgWorks(t *testing.T) {
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c := newTestApp()
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s := c.Arg("arg", "help").String()
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_, err := c.Parse([]string{"foo"})
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assert.NoError(t, err)
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assert.Equal(t, "foo", *s)
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}
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func TestTopLevelArgCantBeUsedWithCommands(t *testing.T) {
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c := newTestApp()
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c.Arg("arg", "help").String()
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c.Command("cmd", "help")
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_, err := c.Parse([]string{})
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assert.Error(t, err)
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}
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func TestTooManyArgs(t *testing.T) {
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a := newTestApp()
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a.Arg("a", "").String()
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_, err := a.Parse([]string{"a", "b"})
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assert.Error(t, err)
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}
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func TestTooManyArgsAfterCommand(t *testing.T) {
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a := newTestApp()
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a.Command("a", "")
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assert.NoError(t, a.init())
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_, err := a.Parse([]string{"a", "b"})
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assert.Error(t, err)
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}
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func TestArgsLooksLikeFlagsWithConsumeRemainder(t *testing.T) {
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a := newTestApp()
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a.Arg("opts", "").Required().Strings()
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_, err := a.Parse([]string{"hello", "-world"})
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assert.Error(t, err)
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}
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func TestCommandParseDoesNotResetFlagsToDefault(t *testing.T) {
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app := newTestApp()
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flag := app.Flag("flag", "").Default("default").String()
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app.Command("cmd", "")
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_, err := app.Parse([]string{"--flag=123", "cmd"})
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assert.NoError(t, err)
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assert.Equal(t, "123", *flag)
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}
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func TestCommandParseDoesNotFailRequired(t *testing.T) {
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app := newTestApp()
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flag := app.Flag("flag", "").Required().String()
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app.Command("cmd", "")
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_, err := app.Parse([]string{"cmd", "--flag=123"})
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assert.NoError(t, err)
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assert.Equal(t, "123", *flag)
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}
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func TestSelectedCommand(t *testing.T) {
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app := newTestApp()
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c0 := app.Command("c0", "")
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c0.Command("c1", "")
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s, err := app.Parse([]string{"c0", "c1"})
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assert.NoError(t, err)
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assert.Equal(t, "c0 c1", s)
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}
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func TestSubCommandRequired(t *testing.T) {
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app := newTestApp()
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c0 := app.Command("c0", "")
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c0.Command("c1", "")
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_, err := app.Parse([]string{"c0"})
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assert.Error(t, err)
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}
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func TestInterspersedFalse(t *testing.T) {
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app := newTestApp().Interspersed(false)
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a1 := app.Arg("a1", "").String()
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a2 := app.Arg("a2", "").String()
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f1 := app.Flag("flag", "").String()
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_, err := app.Parse([]string{"a1", "--flag=flag"})
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assert.NoError(t, err)
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assert.Equal(t, "a1", *a1)
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assert.Equal(t, "--flag=flag", *a2)
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assert.Equal(t, "", *f1)
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}
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func TestInterspersedTrue(t *testing.T) {
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// test once with the default value and once with explicit true
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for i := 0; i < 2; i++ {
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app := newTestApp()
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if i != 0 {
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t.Log("Setting explicit")
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app.Interspersed(true)
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} else {
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t.Log("Using default")
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}
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a1 := app.Arg("a1", "").String()
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a2 := app.Arg("a2", "").String()
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f1 := app.Flag("flag", "").String()
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_, err := app.Parse([]string{"a1", "--flag=flag"})
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assert.NoError(t, err)
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assert.Equal(t, "a1", *a1)
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assert.Equal(t, "", *a2)
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assert.Equal(t, "flag", *f1)
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}
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}
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func TestDefaultEnvars(t *testing.T) {
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a := New("some-app", "").Terminate(nil).DefaultEnvars()
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f0 := a.Flag("some-flag", "")
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f0.Bool()
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f1 := a.Flag("some-other-flag", "").NoEnvar()
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f1.Bool()
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f2 := a.Flag("a-1-flag", "")
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f2.Bool()
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_, err := a.Parse([]string{})
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assert.NoError(t, err)
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assert.Equal(t, "SOME_APP_SOME_FLAG", f0.envar)
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assert.Equal(t, "", f1.envar)
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assert.Equal(t, "SOME_APP_A_1_FLAG", f2.envar)
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}
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func TestBashCompletionOptionsWithEmptyApp(t *testing.T) {
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a := newTestApp()
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context, err := a.ParseContext([]string{"--completion-bash"})
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if err != nil {
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t.Errorf("Unexpected error whilst parsing context: [%v]", err)
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}
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args := a.completionOptions(context)
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assert.Equal(t, []string(nil), args)
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}
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func TestBashCompletionOptions(t *testing.T) {
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a := newTestApp()
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a.Command("one", "")
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a.Flag("flag-0", "").String()
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a.Flag("flag-1", "").HintOptions("opt1", "opt2", "opt3").String()
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two := a.Command("two", "")
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two.Flag("flag-2", "").String()
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two.Flag("flag-3", "").HintOptions("opt4", "opt5", "opt6").String()
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three := a.Command("three", "")
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three.Flag("flag-4", "").String()
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three.Arg("arg-1", "").String()
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three.Arg("arg-2", "").HintOptions("arg-2-opt-1", "arg-2-opt-2").String()
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three.Arg("arg-3", "").String()
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three.Arg("arg-4", "").HintAction(func() []string {
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return []string{"arg-4-opt-1", "arg-4-opt-2"}
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}).String()
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cases := []struct {
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Args string
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ExpectedOptions []string
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}{
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{
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Args: "--completion-bash",
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ExpectedOptions: []string{"help", "one", "three", "two"},
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},
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{
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Args: "--completion-bash --",
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ExpectedOptions: []string{"--flag-0", "--flag-1", "--help"},
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},
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{
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Args: "--completion-bash --fla",
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ExpectedOptions: []string{"--flag-0", "--flag-1", "--help"},
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},
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{
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// No options available for flag-0, return to cmd completion
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Args: "--completion-bash --flag-0",
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ExpectedOptions: []string{"help", "one", "three", "two"},
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},
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{
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Args: "--completion-bash --flag-0 --",
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ExpectedOptions: []string{"--flag-0", "--flag-1", "--help"},
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},
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{
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Args: "--completion-bash --flag-1",
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ExpectedOptions: []string{"opt1", "opt2", "opt3"},
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},
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{
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Args: "--completion-bash --flag-1 opt",
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ExpectedOptions: []string{"opt1", "opt2", "opt3"},
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},
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{
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Args: "--completion-bash --flag-1 opt1",
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ExpectedOptions: []string{"help", "one", "three", "two"},
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},
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{
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Args: "--completion-bash --flag-1 opt1 --",
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ExpectedOptions: []string{"--flag-0", "--flag-1", "--help"},
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},
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// Try Subcommand
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{
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Args: "--completion-bash two",
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ExpectedOptions: []string(nil),
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},
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{
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Args: "--completion-bash two --",
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ExpectedOptions: []string{"--help", "--flag-2", "--flag-3", "--flag-0", "--flag-1"},
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},
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{
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Args: "--completion-bash two --flag",
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ExpectedOptions: []string{"--help", "--flag-2", "--flag-3", "--flag-0", "--flag-1"},
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},
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{
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Args: "--completion-bash two --flag-2",
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ExpectedOptions: []string(nil),
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},
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{
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// Top level flags carry downwards
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Args: "--completion-bash two --flag-1",
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ExpectedOptions: []string{"opt1", "opt2", "opt3"},
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},
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{
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// Top level flags carry downwards
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Args: "--completion-bash two --flag-1 opt",
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ExpectedOptions: []string{"opt1", "opt2", "opt3"},
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},
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{
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// Top level flags carry downwards
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Args: "--completion-bash two --flag-1 opt1",
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ExpectedOptions: []string(nil),
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},
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{
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Args: "--completion-bash two --flag-3",
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ExpectedOptions: []string{"opt4", "opt5", "opt6"},
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},
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{
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Args: "--completion-bash two --flag-3 opt",
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ExpectedOptions: []string{"opt4", "opt5", "opt6"},
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},
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{
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Args: "--completion-bash two --flag-3 opt4",
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ExpectedOptions: []string(nil),
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},
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{
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Args: "--completion-bash two --flag-3 opt4 --",
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ExpectedOptions: []string{"--help", "--flag-2", "--flag-3", "--flag-0", "--flag-1"},
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},
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// Args complete
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{
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// After a command with an arg with no options, nothing should be
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// shown
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Args: "--completion-bash three ",
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ExpectedOptions: []string(nil),
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},
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{
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// After a command with an arg, explicitly starting a flag should
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// complete flags
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Args: "--completion-bash three --",
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ExpectedOptions: []string{"--flag-0", "--flag-1", "--flag-4", "--help"},
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},
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{
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// After a command with an arg that does have completions, they
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// should be shown
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Args: "--completion-bash three arg1 ",
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ExpectedOptions: []string{"arg-2-opt-1", "arg-2-opt-2"},
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},
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{
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// After a command with an arg that does have completions, but a
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// flag is started, flag options should be completed
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Args: "--completion-bash three arg1 --",
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ExpectedOptions: []string{"--flag-0", "--flag-1", "--flag-4", "--help"},
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},
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{
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// After a command with an arg that has no completions, and isn't first,
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// nothing should be shown
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Args: "--completion-bash three arg1 arg2 ",
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ExpectedOptions: []string(nil),
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},
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{
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// After a command with a different arg that also has completions,
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// those different options should be shown
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Args: "--completion-bash three arg1 arg2 arg3 ",
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ExpectedOptions: []string{"arg-4-opt-1", "arg-4-opt-2"},
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},
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{
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// After a command with all args listed, nothing should complete
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Args: "--completion-bash three arg1 arg2 arg3 arg4",
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ExpectedOptions: []string(nil),
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},
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}
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for _, c := range cases {
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context, _ := a.ParseContext(strings.Split(c.Args, " "))
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args := a.completionOptions(context)
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sort.Strings(args)
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sort.Strings(c.ExpectedOptions)
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assert.Equal(t, c.ExpectedOptions, args, "Expected != Actual: [%v] != [%v]. \nInput was: [%v]", c.ExpectedOptions, args, c.Args)
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}
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}
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