135 lines
2.7 KiB
Go
135 lines
2.7 KiB
Go
package arg
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import (
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"strings"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func parse(cmdline string, dest interface{}) error {
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p, err := NewParser(dest)
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if err != nil {
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return err
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}
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return p.Parse(strings.Split(cmdline, " "))
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}
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func TestStringSingle(t *testing.T) {
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var args struct {
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Foo string
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}
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err := parse("--foo bar", &args)
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require.NoError(t, err)
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assert.Equal(t, "bar", args.Foo)
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}
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func TestMixed(t *testing.T) {
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var args struct {
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Foo string `arg:"-f"`
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Bar int
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Baz uint `arg:"positional"`
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Ham bool
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Spam float32
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}
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args.Bar = 3
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err := parse("123 -spam=1.2 -ham -f xyz", &args)
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require.NoError(t, err)
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assert.Equal(t, "xyz", args.Foo)
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assert.Equal(t, 3, args.Bar)
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assert.Equal(t, uint(123), args.Baz)
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assert.Equal(t, true, args.Ham)
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assert.EqualValues(t, 1.2, args.Spam)
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}
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func TestRequired(t *testing.T) {
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var args struct {
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Foo string `arg:"required"`
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}
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err := parse("", &args)
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require.Error(t, err, "--foo is required")
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}
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func TestShortFlag(t *testing.T) {
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var args struct {
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Foo string `arg:"-f"`
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}
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err := parse("-f xyz", &args)
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require.NoError(t, err)
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assert.Equal(t, "xyz", args.Foo)
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err = parse("-foo xyz", &args)
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require.NoError(t, err)
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assert.Equal(t, "xyz", args.Foo)
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err = parse("--foo xyz", &args)
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require.NoError(t, err)
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assert.Equal(t, "xyz", args.Foo)
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}
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func TestCaseSensitive(t *testing.T) {
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var args struct {
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Lower bool `arg:"-v"`
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Upper bool `arg:"-V"`
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}
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err := parse("-v", &args)
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require.NoError(t, err)
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assert.True(t, args.Lower)
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assert.False(t, args.Upper)
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}
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func TestCaseSensitive2(t *testing.T) {
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var args struct {
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Lower bool `arg:"-v"`
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Upper bool `arg:"-V"`
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}
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err := parse("-V", &args)
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require.NoError(t, err)
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assert.False(t, args.Lower)
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assert.True(t, args.Upper)
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}
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func TestPositional(t *testing.T) {
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var args struct {
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Input string `arg:"positional"`
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Output string `arg:"positional"`
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}
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err := parse("foo", &args)
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require.NoError(t, err)
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assert.Equal(t, "foo", args.Input)
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assert.Equal(t, "", args.Output)
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}
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func TestRequiredPositional(t *testing.T) {
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var args struct {
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Input string `arg:"positional"`
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Output string `arg:"positional,required"`
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}
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err := parse("foo", &args)
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assert.Error(t, err)
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}
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func TestTooManyPositional(t *testing.T) {
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var args struct {
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Input string `arg:"positional"`
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Output string `arg:"positional"`
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}
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err := parse("foo bar baz", &args)
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assert.Error(t, err)
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}
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func TestMultiple(t *testing.T) {
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var args struct {
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Foo []int
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Bar []string
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}
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err := parse("--foo 1 2 3 --bar x y z", &args)
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require.NoError(t, err)
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assert.Equal(t, []int{1, 2, 3}, args.Foo)
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assert.Equal(t, []string{"x", "y", "z"}, args.Bar)
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}
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