Do not show error pages in development mode

error_pages.go

@@ -59,7 +59,10 @@ func (s *errorPageResponseWriter) Flush() {
 	s.WriteHeader(http.StatusOK)
 }
 
-func handleRailsError(documentRoot *string, handler serviceHandleFunc) serviceHandleFunc {
+func handleRailsError(documentRoot *string, enabled *bool, handler serviceHandleFunc) serviceHandleFunc {
+	if !*enabled {
+		return handler
+	}
 	return func(w http.ResponseWriter, r *gitRequest) {
 		rw := errorPageResponseWriter{
 			rw:   w,

error_pages_test.go

@@ -22,7 +22,8 @@ func TestIfErrorPageIsPresented(t *testing.T) {
 
 	w := httptest.NewRecorder()
 
-	handleRailsError(&dir, func(w http.ResponseWriter, r *gitRequest) {
+	enabled := true
+	handleRailsError(&dir, &enabled, func(w http.ResponseWriter, r *gitRequest) {
 		w.WriteHeader(404)
 		fmt.Fprint(w, "Not Found")
 	})(w, nil)
@@ -42,7 +43,8 @@ func TestIfErrorPassedIfNoErrorPageIsFound(t *testing.T) {
 	w := httptest.NewRecorder()
 	errorResponse := "ERROR"
 
-	handleRailsError(&dir, func(w http.ResponseWriter, r *gitRequest) {
+	enabled := true
+	handleRailsError(&dir, &enabled, func(w http.ResponseWriter, r *gitRequest) {
 		w.WriteHeader(404)
 		fmt.Fprint(w, errorResponse)
 	})(w, nil)
@@ -51,3 +53,27 @@ func TestIfErrorPassedIfNoErrorPageIsFound(t *testing.T) {
 	assertResponseCode(t, w, 404)
 	assertResponseBody(t, w, errorResponse)
 }
+
+func TestIfErrorPageIsIgnoredInDevelopment(t *testing.T) {
+	dir, err := ioutil.TempDir("", "error_page")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.RemoveAll(dir)
+
+	errorPage := "ERROR"
+	ioutil.WriteFile(filepath.Join(dir, "500.html"), []byte(errorPage), 0600)
+
+	w := httptest.NewRecorder()
+
+	enabled := false
+	serverError := "Interesting Server Error"
+	handleRailsError(&dir, &enabled, func(w http.ResponseWriter, r *gitRequest) {
+		w.WriteHeader(500)
+		fmt.Fprint(w, serverError)
+	})(w, nil)
+	w.Flush()
+
+	assertResponseCode(t, w, 500)
+	assertResponseBody(t, w, serverError)
+}

main.go

@@ -90,7 +90,7 @@ var httpRoutes = [...]httpRoute{
 		handleServeFile(documentRoot, CacheExpireMax,
 			handleDevelopmentMode(developmentMode,
 				handleDeployPage(documentRoot,
-					handleRailsError(documentRoot,
+					handleRailsError(documentRoot, developmentMode,
 						proxyRequest,
 					),
 				),
@@ -102,7 +102,7 @@ var httpRoutes = [...]httpRoute{
 	httpRoute{"", nil,
 		handleServeFile(documentRoot, CacheDisabled,
 			handleDeployPage(documentRoot,
-				handleRailsError(documentRoot,
+				handleRailsError(documentRoot, developmentMode,
 					proxyRequest,
 				),
 			),