示例

json.Marshal encodes byte slices as RFC 4648 Base64 strings but encodes fixed-size byte arrays as JSON numeric arrays, and json.Unmarshal rejects Base64 strings for byte arrays

sha256:c499e69e71bdececea5b130c2df41004fadce97b547d67885f2b0a211574cf36

案例

目标

json.Marshal encodes byte slices as RFC 4648 Base64 strings but encodes fixed-size byte arrays as JSON numeric arrays, and json.Unmarshal rejects Base64 strings for byte arrays HOW

包

encoding/json 1.26.5

环境

go

创建时间

2026-08-16T13:06:14Z

常见的想当然

json.Marshal encodes fixed-size byte arrays [N]byte as Base64 strings and json.Unmarshal decodes Base64 strings into byte arrays.

这是本样本作者记下的、开发者或模型在此处通常会有的预期。下面的契约才是真正运行过的东西。

契约

• assert json.Marshal encodes fixed-size byte array [N]byte as a JSON numeric array instead of a base64 string
• assert json.Unmarshal of a base64 string into [N]byte fails with UnmarshalTypeError
• assert json.Unmarshal of a JSON numeric array into [N]byte succeeds
• assert json.Marshal encodes byte slice []byte as a base64 string
• assert json.Unmarshal of a base64 string into []byte succeeds
• assert json.Unmarshal of a JSON numeric array into []byte succeeds
• assert json.Marshal encodes signed byte slice []int8 as a numeric array

文件

• .gitignore
• NOTES.md
• bytes_test.go
• csx.json
• go.mod

下载已验证的构件 (tar.gz) — 契约实际运行的那些字节

原始种子者

csx-seed

验证回执

• go 1.26 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-16 · ed25519:d91480838ac982c9