Test_Logger_Filter() — fiber Function Reference

Architecture documentation for the Test_Logger_Filter() function in logger_test.go from the fiber codebase.

Function go FiberCore Adapters

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FiberCore→ Adapters→ Test_Logger_Filter() — fiber Function Reference

Dependency Diagram

graph TD
  bd3aa8f4_d221_b101_c140_72607b63f13a["Test_Logger_Filter()"]
  97b45bc9_01a3_2a9a_4c94_9de1344ca94c["logger_test.go"]
  bd3aa8f4_d221_b101_c140_72607b63f13a -->|defined in| 97b45bc9_01a3_2a9a_4c94_9de1344ca94c
  style bd3aa8f4_d221_b101_c140_72607b63f13a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

middleware/logger/logger_test.go lines 182–319

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

	t.Run("Test Not Found", func(t *testing.T) {
		t.Parallel()
		app := fiber.New()

		logOutput := bytes.Buffer{}

		// Return true to skip logging for all requests != 404
		app.Use(New(Config{
			Skip: func(c fiber.Ctx) bool {
				return c.Response().StatusCode() != fiber.StatusNotFound
			},
			Stream: &logOutput,
		}))

		resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/nonexistent", http.NoBody))
		require.NoError(t, err)
		require.Equal(t, fiber.StatusNotFound, resp.StatusCode)

		// Expect logs for the 404 request
		require.Contains(t, logOutput.String(), "404")
	})

	t.Run("Test OK", func(t *testing.T) {
		t.Parallel()
		app := fiber.New()

		logOutput := bytes.Buffer{}

		// Return true to skip logging for all requests == 200
		app.Use(New(Config{
			Skip: func(c fiber.Ctx) bool {
				return c.Response().StatusCode() == fiber.StatusOK
			},
			Stream: &logOutput,
		}))

		app.Get("/", func(c fiber.Ctx) error {
			return c.SendStatus(fiber.StatusOK)
		})

		resp, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/", http.NoBody))
		require.NoError(t, err)
		require.Equal(t, fiber.StatusOK, resp.StatusCode)

		// We skip logging for status == 200, so "200" should not appear
		require.NotContains(t, logOutput.String(), "200")
	})

	t.Run("Always Skip", func(t *testing.T) {
		t.Parallel()
		app := fiber.New()

		logOutput := bytes.Buffer{}

		// Filter always returns true => skip all logs
		app.Use(New(Config{
			Skip: func(_ fiber.Ctx) bool {
				return true // always skip
			},
			Stream: &logOutput,
		}))

		app.Get("/something", func(c fiber.Ctx) error {
			return c.Status(fiber.StatusTeapot).SendString("I'm a teapot")
		})

		_, err := app.Test(httptest.NewRequest(fiber.MethodGet, "/something", http.NoBody))
		require.NoError(t, err)

		// Expect NO logs
		require.Empty(t, logOutput.String())
	})

	t.Run("Never Skip", func(t *testing.T) {
		t.Parallel()
		app := fiber.New()

		logOutput := bytes.Buffer{}