format service and add test (#197)

Co-authored-by: kim <xutao@xiaoheiban.cn>

tools/goctl/api/format/format_test.go

@@ -0,0 +1,47 @@
+package format
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const (
+	notFormattedStr = `
+type Request struct {
+  Name string 
+}
+
+type Response struct {
+  Message string
+}
+
+service A-api {
+@server(
+handler: GreetHandler
+  )
+  get /greet/from/:name(Request) returns (Response)
+}
+`
+
+	formattedStr = `type Request struct {
+	Name string
+}
+
+type Response struct {
+	Message string
+}
+
+service A-api {
+	@server(
+		handler: GreetHandler
+	)
+	get /greet/from/:name(Request) returns (Response)
+}`
+)
+
+func TestInlineTypeNotExist(t *testing.T) {
+	r, err := apiFormat(notFormattedStr)
+	assert.Nil(t, err)
+	assert.Equal(t, r, formattedStr)
+}