Test_CacheStaleResponseAddsWarning110() — fiber Function Reference

Architecture documentation for the Test_CacheStaleResponseAddsWarning110() function in cache_test.go from the fiber codebase.

Function go FiberMiddleware Caching

Entity Profile

FiberMiddleware→ Caching→ Test_CacheStaleResponseAddsWarning110() — fiber Function Reference

Dependency Diagram

graph TD
  65747e46_cb15_315f_b4f8_396e1a85c43b["Test_CacheStaleResponseAddsWarning110()"]
  8453a087_9678_fe96_1b20_2d125b6f8656["cache_test.go"]
  65747e46_cb15_315f_b4f8_396e1a85c43b -->|defined in| 8453a087_9678_fe96_1b20_2d125b6f8656
  style 65747e46_cb15_315f_b4f8_396e1a85c43b fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

middleware/cache/cache_test.go lines 2316–2371

func Test_CacheStaleResponseAddsWarning110(t *testing.T) {
	t.Parallel()

	app := fiber.New()
	app.Use(New(Config{
		Expiration: 2 * time.Second,
	}))

	var count int
	app.Get("/", func(c fiber.Ctx) error {
		count++
		c.Set(fiber.HeaderCacheControl, "public, max-age=1")
		return c.SendString("body" + strconv.Itoa(count))
	})

	resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", http.NoBody))
	require.NoError(t, err)
	require.Equal(t, cacheMiss, resp.Header.Get("X-Cache"))

	req := httptest.NewRequest(fiber.MethodGet, "/", http.NoBody)
	req.Header.Set(fiber.HeaderCacheControl, "max-stale=5")

	// Wait for the cached response to become stale (max-age=1)
	// Add extra time to ensure the entry has expired
	time.Sleep(1200 * time.Millisecond)

	deadline := time.Now().Add(3 * time.Second)
	for {
		resp, err = app.Test(req)
		require.NoError(t, err)
		if resp.Header.Get("X-Cache") == cacheHit {
			ageVal, err := strconv.Atoi(resp.Header.Get(fiber.HeaderAge))
			require.NoError(t, err)
			if ageVal >= 1 {
				// Check that Warning header is present before breaking
				warnings := resp.Header.Values(fiber.HeaderWarning)
				if len(warnings) > 0 {
					break
				}
			}
		}
		require.True(t, time.Now().Before(deadline), "response did not become stale before deadline")
		time.Sleep(50 * time.Millisecond)
	}

	warnings := resp.Header.Values(fiber.HeaderWarning)
	require.NotEmpty(t, warnings, "Warning header should be present when serving stale response")
	found := false
	for _, w := range warnings {
		if strings.Contains(w, "110") {
			found = true
			break
		}
	}
	require.True(t, found, "warning 110 not found in %v", warnings)
}