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|
// nolint: govet
package konghcl
import (
"io/ioutil"
"os"
"strings"
"testing"
"github.com/alecthomas/kong"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const testConfig = `
flag-name = "hello world"
int-flag = 10
float-flag = 10.5
slice-flag = [1, 2, 3]
prefix {
prefixed-flag = "prefixed flag"
}
map-flag = {
key = "value"
}
// Multiple keys are merged.
mapped = {
left = "left"
}
mapped = {
right = "right"
}
prefix-block {
embedded-flag = "yes"
}
`
type mapperValue struct {
Left string
Right string
}
func (m *mapperValue) Decode(ctx *kong.DecodeContext) error {
return DecodeValue(ctx, m)
}
func TestHCL(t *testing.T) {
type Embedded struct {
EmbeddedFlagTwo string
EmbeddedFlag string
}
type CLI struct {
FlagName string
IntFlag int
FloatFlag float64
SliceFlag []int
GroupedFlag string `group:"group"`
PrefixedFlag string `prefix:"prefix-"`
Embedded `group:"group"`
PrefixedBlock Embedded `embed:"" prefix:"prefix-block-"`
MapFlag map[string]string
Mapped mapperValue
}
t.Run("FromResolver", func(t *testing.T) {
var cli CLI
r := strings.NewReader(testConfig)
resolver, err := Loader(r)
require.NoError(t, err)
parser, err := kong.New(&cli, kong.Resolvers(resolver))
require.NoError(t, err)
_, err = parser.Parse(nil)
require.NoError(t, err)
assert.Equal(t, "hello world", cli.FlagName)
assert.Equal(t, "prefixed flag", cli.PrefixedFlag)
assert.Equal(t, 10, cli.IntFlag)
assert.Equal(t, 10.5, cli.FloatFlag)
assert.Equal(t, []int{1, 2, 3}, cli.SliceFlag)
assert.Equal(t, map[string]string{"key": "value"}, cli.MapFlag)
assert.Equal(t, mapperValue{Left: "left", Right: "right"}, cli.Mapped)
assert.Equal(t, Embedded{EmbeddedFlag: "yes"}, cli.PrefixedBlock)
})
t.Run("FragmentFromFlag", func(t *testing.T) {
var cli CLI
parser, err := kong.New(&cli)
require.NoError(t, err)
_, err = parser.Parse([]string{"--mapped", `
left = "LEFT"
right = "RIGHT"
`})
require.NoError(t, err)
require.Equal(t, mapperValue{Left: "LEFT", Right: "RIGHT"}, cli.Mapped)
})
t.Run("FragmentFromFile", func(t *testing.T) {
w, err := ioutil.TempFile("", "kong-hcl-")
require.NoError(t, err)
_, err = w.Write([]byte(`
left = "LEFT"
right = "RIGHT"
`))
require.NoError(t, err)
_ = w.Close()
defer os.Remove(w.Name())
var cli CLI
parser, err := kong.New(&cli)
require.NoError(t, err)
_, err = parser.Parse([]string{"--mapped", w.Name()})
require.NoError(t, err)
require.Equal(t, mapperValue{Left: "LEFT", Right: "RIGHT"}, cli.Mapped)
})
}
func TestHCLValidation(t *testing.T) {
type command struct {
CommandFlag string
}
var cli struct {
Command command `cmd:""`
Flag string
}
resolver, err := Loader(strings.NewReader(`
invalid-flag = true
`))
require.NoError(t, err)
parser, err := kong.New(&cli, kong.Resolvers(resolver))
require.NoError(t, err)
_, err = parser.Parse([]string{"command"})
require.EqualError(t, err, "unknown configuration key \"invalid-flag\"")
}
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