replace POST constance with stdlib constance

Author: Kamandlou

bind_test.go

@@ -492,7 +492,7 @@ func TestBindParam(t *testing.T) {
 	// Bind something with param and post data payload
 	body := bytes.NewBufferString(`{ "name": "Jon Snow" }`)
 	e2 := New()
-	req2 := httptest.NewRequest(POST, "/", body)
+	req2 := httptest.NewRequest(http.MethodPost, "/", body)
 	req2.Header.Set(HeaderContentType, MIMEApplicationJSON)
 
 	rec2 := httptest.NewRecorder()

context_test.go

@@ -32,7 +32,7 @@ var testUser = user{1, "Jon Snow"}
 
 func BenchmarkAllocJSONP(b *testing.B) {
 	e := New()
-	req := httptest.NewRequest(POST, "/", strings.NewReader(userJSON))
+	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
 	rec := httptest.NewRecorder()
 	c := e.NewContext(req, rec).(*context)
 
@@ -46,7 +46,7 @@ func BenchmarkAllocJSONP(b *testing.B) {
 
 func BenchmarkAllocJSON(b *testing.B) {
 	e := New()
-	req := httptest.NewRequest(POST, "/", strings.NewReader(userJSON))
+	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
 	rec := httptest.NewRecorder()
 	c := e.NewContext(req, rec).(*context)
 
@@ -60,7 +60,7 @@ func BenchmarkAllocJSON(b *testing.B) {
 
 func BenchmarkAllocXML(b *testing.B) {
 	e := New()
-	req := httptest.NewRequest(POST, "/", strings.NewReader(userJSON))
+	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
 	rec := httptest.NewRecorder()
 	c := e.NewContext(req, rec).(*context)
 
@@ -849,7 +849,7 @@ func TestContext_IsWebSocket(t *testing.T) {
 
 func TestContext_Bind(t *testing.T) {
 	e := New()
-	req := httptest.NewRequest(POST, "/", strings.NewReader(userJSON))
+	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(userJSON))
 	c := e.NewContext(req, nil)
 	u := new(user)