Adding NewContext function to facilitate testing

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

context.go

@@ -19,6 +19,17 @@ type (
 	store map[string]interface{}
 )
 
+func NewContext(req *http.Request, res *Response, e *Echo) *Context {
+	return &Context{
+		Request:  req,
+		Response: res,
+		echo:     e,
+		pnames:   make([]string, e.maxParam),
+		pvalues:  make([]string, e.maxParam),
+		store:    make(store),
+	}
+}
+
 // P returns path parameter by index.
 func (c *Context) P(i uint8) (value string) {
 	l := uint8(len(c.pnames))
@@ -114,7 +125,7 @@ func (c *Context) Redirect(code int, url string) {
 }
 
 func (c *Context) reset(w http.ResponseWriter, r *http.Request, e *Echo) {
-	c.Response.reset(w)
 	c.Request = r
+	c.Response.reset(w)
 	c.echo = e
 }

context_test.go

@@ -26,13 +26,7 @@ func (t *Template) Render(w io.Writer, name string, data interface{}) *HTTPError
 func TestContext(t *testing.T) {
 	b, _ := json.Marshal(u1)
 	r, _ := http.NewRequest(POST, "/users/1", bytes.NewReader(b))
-	c := &Context{
-		Response: &Response{Writer: httptest.NewRecorder()},
-		Request:  r,
-		pvalues:  make([]string, 5),
-		store:    make(store),
-		echo:     New(),
-	}
+	c := NewContext(r, &Response{Writer: httptest.NewRecorder()}, New())
 
 	//------
 	// Bind

echo.go

@@ -113,12 +113,7 @@ func New() (e *Echo) {
 	}
 	e.Router = NewRouter(e)
 	e.pool.New = func() interface{} {
-		return &Context{
-			Response: &Response{},
-			pnames:   make([]string, e.maxParam),
-			pvalues:  make([]string, e.maxParam),
-			store:    make(store),
-		}
+		return NewContext(nil, new(Response), e)
 	}
 
 	//----------