Function TestMiddlewareScenario

pkg/errors/error_test.go:391–463

TestMiddlewareScenario demonstrates a realistic middleware scenario

(t *testing.T)

// TestMiddlewareScenario demonstrates a realistic middleware scenario
func TestMiddlewareScenario(t *testing.T) {
	t.Run("realistic middleware error collection scenario", func(t *testing.T) {
		// Simulate a realistic HTTP middleware scenario

		// 1. Request comes in, middleware sets up error tracking
		ctx := ContextWithGitHubErrors(context.Background())

		// 2. Middleware stores reference to context for later inspection
		var middlewareCtx context.Context
		setupMiddleware := func(ctx context.Context) context.Context {
			middlewareCtx = ctx
			return ctx
		}

		// 3. Setup middleware
		ctx = setupMiddleware(ctx)

		// 4. Simulate multiple service calls that add errors
		simulateServiceCall1 := func(ctx context.Context) {
			resp := &github.Response{Response: &http.Response{StatusCode: 403}}
			_, err := NewGitHubAPIErrorToCtx(ctx, "insufficient permissions", resp, fmt.Errorf("forbidden"))
			require.NoError(t, err)
		}

		simulateServiceCall2 := func(ctx context.Context) {
			resp := &github.Response{Response: &http.Response{StatusCode: 404}}
			_, err := NewGitHubAPIErrorToCtx(ctx, "resource not found", resp, fmt.Errorf("not found"))
			require.NoError(t, err)
		}

		simulateGraphQLCall := func(ctx context.Context) {
			gqlErr := newGitHubGraphQLError("mutation failed", fmt.Errorf("invalid input"))
			_, err := addGitHubGraphQLErrorToContext(ctx, gqlErr)
			require.NoError(t, err)
		}

		// 5. Execute service calls (without context propagation)
		simulateServiceCall1(ctx)
		simulateServiceCall2(ctx)
		simulateGraphQLCall(ctx)

		// 6. Middleware inspects errors at the end of request processing
		finalizeMiddleware := func(ctx context.Context) ([]string, []string) {
			var apiErrorMessages []string
			var gqlErrorMessages []string

			if apiErrors, err := GetGitHubAPIErrors(ctx); err == nil {
				for _, apiErr := range apiErrors {
					apiErrorMessages = append(apiErrorMessages, apiErr.Message)
				}
			}

			if gqlErrors, err := GetGitHubGraphQLErrors(ctx); err == nil {
				for _, gqlErr := range gqlErrors {
					gqlErrorMessages = append(gqlErrorMessages, gqlErr.Message)
				}
			}