Exemplo

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

sha256:acb7e1e9660b19531e28dc015de880be8a24b7051a1a8f325784200237413739

Caso

Objetivo

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

Pacotes

shelf 1.4.2

Ambiente

dart

Criado

2026-08-17T11:53:32Z

O que costuma-se supor

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

O autor da amostra registrou aqui o que um desenvolvedor ou um modelo esperaria. O contrato abaixo é o que de fato rodou.

Contrato

• 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

Arquivos

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

Baixar o artefato de código-fonte (tar.gz)

Seeder de origem

csx-seed

Recibos de verificação

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