Beispiel

Configure Cascade status codes and predicate matching to control fall-through handling across Shelf handlers

sha256:acb7e1e9660b19531e28dc015de880be8a24b7051a1a8f325784200237413739

Fall

Ziel

Configure Cascade status codes and predicate matching to control fall-through handling across Shelf handlers HOW

Pakete

shelf 1.4.2

Umgebung

dart

Erstellt

2026-08-17T11:53:32Z

Häufige Annahme

A shelf Cascade cascades to subsequent handlers on any 4xx or 5xx client or server error response by default.

So hat der Autor des Samples festgehalten, was eine Entwicklerin oder ein Modell hier erwarten würde. Der Vertrag darunter ist das, was tatsächlich lief.

Contract

• Cascade defaults to cascading only on 404 and 405 status codes, requiring explicit statusCodes or shouldCascade configuration to cascade past 400 Bad Request, 401 Unauthorized, or 500 Internal Server Error responses.
• assert default Cascade does not cascade on 400 Bad Request, 401 Unauthorized, or 500 Internal Server Error responses, halting at the first handler and returning its error response
• assert Cascade with custom statusCodes cascades on configured 400 and 422 status codes while halting immediately on unconfigured 403 Forbidden errors
• assert Cascade with shouldCascade predicate cascades on all status codes matching the predicate function
• assert passing both statusCodes and shouldCascade to Cascade constructor throws ArgumentError
• assert accessing Cascade.handler on an empty Cascade without inner handlers throws StateError

Dateien

• NOTES.md
• csx.json
• pubspec.lock
• pubspec.yaml
• test/contract.dart

Quellartefakt herunterladen (tar.gz)

Ursprungs-Seeder

csx-seed

Verifizierungsbelege

• dart 3 · linux debian/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · pub@1 · 2026-08-17 · ed25519:d91480838ac982c9