refactor

ngin/handler/maxbyteshandler_test.go

@@ -0,0 +1,37 @@
+package handler
+
+import (
+	"bytes"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestMaxBytesHandler(t *testing.T) {
+	maxb := MaxBytesHandler(10)
+	handler := maxb(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
+
+	req := httptest.NewRequest(http.MethodPost, "http://localhost",
+		bytes.NewBufferString("123456789012345"))
+	resp := httptest.NewRecorder()
+	handler.ServeHTTP(resp, req)
+	assert.Equal(t, http.StatusRequestEntityTooLarge, resp.Code)
+
+	req = httptest.NewRequest(http.MethodPost, "http://localhost", bytes.NewBufferString("12345"))
+	resp = httptest.NewRecorder()
+	handler.ServeHTTP(resp, req)
+	assert.Equal(t, http.StatusOK, resp.Code)
+}
+
+func TestMaxBytesHandlerNoLimit(t *testing.T) {
+	maxb := MaxBytesHandler(-1)
+	handler := maxb(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {}))
+
+	req := httptest.NewRequest(http.MethodPost, "http://localhost",
+		bytes.NewBufferString("123456789012345"))
+	resp := httptest.NewRecorder()
+	handler.ServeHTTP(resp, req)
+	assert.Equal(t, http.StatusOK, resp.Code)
+}