Using int64 instead of uint64 for response size

Signed-off-by: Vishal Rana <vr@labstack.com>

middleware/compress.go

@@ -9,13 +9,13 @@ import (
 )
 
 type (
-	gzipResponseWriter struct {
+	gzipWriter struct {
 		io.Writer
 		*echo.Response
 	}
 )
 
-func (g gzipResponseWriter) Write(b []byte) (int, error) {
+func (g gzipWriter) Write(b []byte) (int, error) {
 	return g.Writer.Write(b)
 }
 
@@ -31,7 +31,7 @@ func Gzip() echo.MiddlewareFunc {
 
 			w := gzip.NewWriter(c.Response.Writer)
 			defer w.Close()
-			gw := gzipResponseWriter{Writer: w, Response: c.Response}
+			gw := gzipWriter{Writer: w, Response: c.Response}
 			c.Response.Header().Set(echo.ContentEncoding, scheme)
 			c.Response = &echo.Response{Writer: gw}
 			if he := h(c); he != nil {

response.go

@@ -10,8 +10,8 @@ import (
 type (
 	Response struct {
 		Writer    http.ResponseWriter
-		status      int
-		size      uint64
+		status    int
+		size      int64
 		committed bool
 	}
 )
@@ -33,7 +33,7 @@ func (r *Response) WriteHeader(code int) {
 
 func (r *Response) Write(b []byte) (n int, err error) {
 	n, err = r.Writer.Write(b)
-	r.size += uint64(n)
+	r.size += int64(n)
 	return n, err
 }
 
@@ -41,7 +41,7 @@ func (r *Response) Status() int {
 	return r.status
 }
 
-func (r *Response) Size() uint64 {
+func (r *Response) Size() int64 {
 	return r.size
 }
 

response_test.go

@@ -34,7 +34,7 @@ func TestResponse(t *testing.T) {
 	// Write & Size
 	s := "echo"
 	r.Write([]byte(s))
-	if r.Size() != len(s) {
+	if r.Size() != int64(len(s)) {
 		t.Errorf("size should be %d", len(s))
 	}
 }