From aa43f1c56168edb907154626de2a088e308c9951 Mon Sep 17 00:00:00 2001
From: Aofei Sheng <aofei@aofeisheng.com>
Date: Wed, 18 Nov 2020 17:13:42 +0800
Subject: [PATCH] fix: correct `RequestParamValue.String`

---
 request.go      | 9 ++-------
 request_test.go | 4 ++--
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/request.go b/request.go
index 0450c5d..9cbba7d 100644
--- a/request.go
+++ b/request.go
@@ -3,7 +3,6 @@ package air
 import (
 	"context"
 	"errors"
-	"fmt"
 	"io"
 	"mime/multipart"
 	"net"
@@ -744,12 +743,8 @@ func (rpv *RequestParamValue) Float64() (float64, error) {
 // if the rpv is not text-based.
 func (rpv *RequestParamValue) String() string {
 	if rpv.s == nil {
-		if s, ok := rpv.i.(string); ok {
-			rpv.s = &s
-		} else {
-			s := fmt.Sprint(rpv.i)
-			rpv.s = &s
-		}
+		s, _ := rpv.i.(string)
+		rpv.s = &s
 	}
 
 	return *rpv.s
diff --git a/request_test.go b/request_test.go
index 126c9bb..6e2f42c 100644
--- a/request_test.go
+++ b/request_test.go
@@ -789,7 +789,7 @@ func TestRequestParamValueString(t *testing.T) {
 	assert.Nil(t, rpv.s)
 
 	s = rpv.String()
-	assert.Equal(t, "foobar", s)
+	assert.Empty(t, s)
 	assert.NotNil(t, rpv.s)
 }
 
@@ -809,7 +809,7 @@ func TestRequestParamValueBytes(t *testing.T) {
 	assert.Nil(t, rpv.s)
 
 	b = rpv.Bytes()
-	assert.Equal(t, []byte("foobar"), b)
+	assert.Nil(t, b)
 	assert.NotNil(t, rpv.s)
 }