The ResponseWriters defined in rest.handler add Flush interface. (#318)

rest/internal/security/withcoderesponsewriter_test.go

@@ -0,0 +1,33 @@
+package security
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWithCodeResponseWriter(t *testing.T) {
+	req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		cw := &WithCodeResponseWriter{Writer: w}
+
+		cw.Header().Set("X-Test", "test")
+		cw.WriteHeader(http.StatusServiceUnavailable)
+		assert.Equal(t, cw.Code, http.StatusServiceUnavailable)
+
+		_, err := cw.Write([]byte("content"))
+		assert.Nil(t, err)
+
+		flusher, ok := http.ResponseWriter(cw).(http.Flusher)
+		assert.Equal(t, ok, true)
+		flusher.Flush()
+	})
+
+	resp := httptest.NewRecorder()
+	handler.ServeHTTP(resp, req)
+	assert.Equal(t, http.StatusServiceUnavailable, resp.Code)
+	assert.Equal(t, "test", resp.Header().Get("X-Test"))
+	assert.Equal(t, "content", resp.Body.String())
+}