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package kong
import (
"reflect"
"strings"
"testing"
"github.com/alecthomas/assert/v2"
)
func TestOptions(t *testing.T) {
var cli struct{}
p, err := New(&cli, Name("name"), Description("description"), Writers(nil, nil), Exit(nil))
assert.NoError(t, err)
assert.Equal(t, "name", p.Model.Name)
assert.Equal(t, "description", p.Model.Help)
assert.Zero(t, p.Stdout)
assert.Zero(t, p.Stderr)
assert.Zero(t, p.Exit)
}
type impl string
func (impl) Method() {}
func TestBindTo(t *testing.T) {
type iface interface {
Method()
}
saw := ""
method := func(i iface) error {
saw = string(i.(impl)) //nolint
return nil
}
var cli struct{}
p, err := New(&cli, BindTo(impl("foo"), (*iface)(nil)))
assert.NoError(t, err)
err = callFunction(reflect.ValueOf(method), p.bindings)
assert.NoError(t, err)
assert.Equal(t, "foo", saw)
}
func TestInvalidCallback(t *testing.T) {
type iface interface {
Method()
}
saw := ""
method := func(i iface) string {
saw = string(i.(impl)) //nolint
return saw
}
var cli struct{}
p, err := New(&cli, BindTo(impl("foo"), (*iface)(nil)))
assert.NoError(t, err)
err = callFunction(reflect.ValueOf(method), p.bindings)
assert.EqualError(t, err, `return value of func(kong.iface) string must implement "error"`)
}
type zrror struct{}
func (*zrror) Error() string {
return "error"
}
func TestCallbackCustomError(t *testing.T) {
type iface interface {
Method()
}
saw := ""
method := func(i iface) *zrror {
saw = string(i.(impl)) //nolint
return nil
}
var cli struct{}
p, err := New(&cli, BindTo(impl("foo"), (*iface)(nil)))
assert.NoError(t, err)
err = callFunction(reflect.ValueOf(method), p.bindings)
assert.NoError(t, err)
assert.Equal(t, "foo", saw)
}
type bindToProviderCLI struct {
Called bool
Cmd bindToProviderCmd `cmd:""`
}
type boundThing struct {
}
type bindToProviderCmd struct{}
func (*bindToProviderCmd) Run(cli *bindToProviderCLI, b *boundThing) error {
cli.Called = true
return nil
}
func TestBindToProvider(t *testing.T) {
var cli bindToProviderCLI
app, err := New(&cli, BindToProvider(func() (*boundThing, error) { return &boundThing{}, nil }))
assert.NoError(t, err)
ctx, err := app.Parse([]string{"cmd"})
assert.NoError(t, err)
err = ctx.Run()
assert.NoError(t, err)
assert.True(t, cli.Called)
}
func TestFlagNamer(t *testing.T) {
var cli struct {
SomeFlag string
}
app, err := New(&cli, FlagNamer(strings.ToUpper))
assert.NoError(t, err)
assert.Equal(t, "SOMEFLAG", app.Model.Flags[1].Name)
}
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