test: add FuzzMarshal, golden messages, synctest cancellation and cross smoke

Assisted-by: GLM 5.3 Flash
2026-09-22 01:03:27 +02:00
parent 3e741e7790
commit bef1d3fbd9
10 changed files with 242 additions and 1 deletions
@@ -194,6 +194,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

 ### Fixed

+- An offset date-time written with the `+00:00` offset kept the anonymous
+  location `time.Parse` invents for it, so a round trip through the tree and
+  `Marshal`, which writes a zero offset as `Z`, changed the value's
+  reflection-visible location. The zero offset normalises to `time.UTC` at
+  parse, and the tree is stable across the round trip.
 - Decoding into a defined type whose underlying kind is string or bool, such
  as `type Name string`, panicked instead of storing the value, because a
  value of the predeclared type is not assignable to a defined type and the