squash merge from dev branch

vendor/gopkg.in/alecthomas/kingpin.v2/parser_test.go

@@ -0,0 +1,122 @@
+package kingpin
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/alecthomas/assert"
+)
+
+func TestParserExpandFromFile(t *testing.T) {
+	f, err := ioutil.TempFile("", "")
+	assert.NoError(t, err)
+	defer os.Remove(f.Name())
+	f.WriteString("hello\nworld\n")
+	f.Close()
+
+	app := New("test", "")
+	arg0 := app.Arg("arg0", "").String()
+	arg1 := app.Arg("arg1", "").String()
+
+	_, err = app.Parse([]string{"@" + f.Name()})
+	assert.NoError(t, err)
+	assert.Equal(t, "hello", *arg0)
+	assert.Equal(t, "world", *arg1)
+}
+
+func TestParserExpandFromFileLeadingArg(t *testing.T) {
+	f, err := ioutil.TempFile("", "")
+	assert.NoError(t, err)
+	defer os.Remove(f.Name())
+	f.WriteString("hello\nworld\n")
+	f.Close()
+
+	app := New("test", "")
+	arg0 := app.Arg("arg0", "").String()
+	arg1 := app.Arg("arg1", "").String()
+	arg2 := app.Arg("arg2", "").String()
+
+	_, err = app.Parse([]string{"prefix", "@" + f.Name()})
+	assert.NoError(t, err)
+	assert.Equal(t, "prefix", *arg0)
+	assert.Equal(t, "hello", *arg1)
+	assert.Equal(t, "world", *arg2)
+}
+
+func TestParserExpandFromFileTrailingArg(t *testing.T) {
+	f, err := ioutil.TempFile("", "")
+	assert.NoError(t, err)
+	defer os.Remove(f.Name())
+	f.WriteString("hello\nworld\n")
+	f.Close()
+
+	app := New("test", "")
+	arg0 := app.Arg("arg0", "").String()
+	arg1 := app.Arg("arg1", "").String()
+	arg2 := app.Arg("arg2", "").String()
+
+	_, err = app.Parse([]string{"@" + f.Name(), "suffix"})
+	assert.NoError(t, err)
+	assert.Equal(t, "hello", *arg0)
+	assert.Equal(t, "world", *arg1)
+	assert.Equal(t, "suffix", *arg2)
+}
+
+func TestParserExpandFromFileMultipleSurroundingArgs(t *testing.T) {
+	f, err := ioutil.TempFile("", "")
+	assert.NoError(t, err)
+	defer os.Remove(f.Name())
+	f.WriteString("hello\nworld\n")
+	f.Close()
+
+	app := New("test", "")
+	arg0 := app.Arg("arg0", "").String()
+	arg1 := app.Arg("arg1", "").String()
+	arg2 := app.Arg("arg2", "").String()
+	arg3 := app.Arg("arg3", "").String()
+
+	_, err = app.Parse([]string{"prefix", "@" + f.Name(), "suffix"})
+	assert.NoError(t, err)
+	assert.Equal(t, "prefix", *arg0)
+	assert.Equal(t, "hello", *arg1)
+	assert.Equal(t, "world", *arg2)
+	assert.Equal(t, "suffix", *arg3)
+}
+
+func TestParserExpandFromFileMultipleFlags(t *testing.T) {
+	f, err := ioutil.TempFile("", "")
+	assert.NoError(t, err)
+	defer os.Remove(f.Name())
+	f.WriteString("--flag1=f1\n--flag2=f2\n")
+	f.Close()
+
+	app := New("test", "")
+	flag0 := app.Flag("flag0", "").String()
+	flag1 := app.Flag("flag1", "").String()
+	flag2 := app.Flag("flag2", "").String()
+	flag3 := app.Flag("flag3", "").String()
+
+	_, err = app.Parse([]string{"--flag0=f0", "@" + f.Name(), "--flag3=f3"})
+	assert.NoError(t, err)
+	assert.Equal(t, "f0", *flag0)
+	assert.Equal(t, "f1", *flag1)
+	assert.Equal(t, "f2", *flag2)
+	assert.Equal(t, "f3", *flag3)
+}
+
+func TestParseContextPush(t *testing.T) {
+	app := New("test", "")
+	app.Command("foo", "").Command("bar", "")
+	c := tokenize([]string{"foo", "bar"}, false)
+	a := c.Next()
+	assert.Equal(t, TokenArg, a.Type)
+	b := c.Next()
+	assert.Equal(t, TokenArg, b.Type)
+	c.Push(b)
+	c.Push(a)
+	a = c.Next()
+	assert.Equal(t, "foo", a.Value)
+	b = c.Next()
+	assert.Equal(t, "bar", b.Value)
+}