feat: log 404 requests with traceid (#1554)

rest/internal/response/headeronceresponsewriter_test.go

@@ -0,0 +1,58 @@
+package response
+
+import (
+	"bufio"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHeaderOnceResponseWriter_Flush(t *testing.T) {
+	req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
+	handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		cw := NewHeaderOnceResponseWriter(w)
+		cw.Header().Set("X-Test", "test")
+		cw.WriteHeader(http.StatusServiceUnavailable)
+		cw.WriteHeader(http.StatusExpectationFailed)
+		_, err := cw.Write([]byte("content"))
+		assert.Nil(t, err)
+
+		flusher, ok := cw.(http.Flusher)
+		assert.True(t, ok)
+		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())
+}
+
+func TestHeaderOnceResponseWriter_Hijack(t *testing.T) {
+	resp := httptest.NewRecorder()
+	writer := &HeaderOnceResponseWriter{
+		w: resp,
+	}
+	assert.NotPanics(t, func() {
+		writer.Hijack()
+	})
+
+	writer = &HeaderOnceResponseWriter{
+		w: mockedHijackable{resp},
+	}
+	assert.NotPanics(t, func() {
+		writer.Hijack()
+	})
+}
+
+type mockedHijackable struct {
+	*httptest.ResponseRecorder
+}
+
+func (m mockedHijackable) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	return nil, nil, nil
+}