support cors in rest server

rest/handlers_test.go

@@ -0,0 +1,27 @@
+package rest
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCorsHandler(t *testing.T) {
+	w := httptest.NewRecorder()
+	handler := CorsHandler()
+	handler.ServeHTTP(w, nil)
+	assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
+	assert.Equal(t, allOrigin, w.Header().Get(allowOrigin))
+}
+
+func TestCorsHandlerWithOrigins(t *testing.T) {
+	origins := []string{"local", "remote"}
+	w := httptest.NewRecorder()
+	handler := CorsHandler(origins...)
+	handler.ServeHTTP(w, nil)
+	assert.Equal(t, http.StatusNoContent, w.Result().StatusCode)
+	assert.Equal(t, strings.Join(origins, separator), w.Header().Get(allowOrigin))
+}