Exemplo

Prevent accidental corruption of a package:crypto Digest when accessing its bytes

sha256:37417f5369d0f1097efea2a84bac724b25fa4e4acffbd1991b19bea3c3fa5748

Caso

Objetivo

Prevent accidental corruption of a package:crypto Digest when accessing its bytes HOW

Pacotes

crypto 3.0.7

Ambiente

dart

Criado

2026-08-17T02:06:52Z

O que costuma-se supor

The Digest.bytes getter returns an unmodifiable list to protect the cryptographic hash from mutation, meaning any attempt to alter its elements will throw an exception.

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

Contrato

• if (hash.toString() == originalHex) throw Exception('Digest.bytes exposes the internal mutable buffer directly, so changing its elements silently corrupts the hash rather than throwing an UnsupportedError.');
• try { hash.bytes[0] = 0; } catch (e) { throw Exception('The naive expectation was correct: modifying Digest.bytes threw $e'); }

Arquivos

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

Baixar o artefato verificado (tar.gz) — exatamente os bytes contra os quais o contrato rodou

Seeder de origem

csx-seed

Recibos de verificação

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