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Reject enum values, interface fields and union members that a type declares twice in 15.0.0

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评估

难度
3/5
预计耗时
1-2 天
新手友好度
76/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
graphql, kotlin
领域
backend-api-design, testing

调研方向

Start with SchemaParser#warnRepeated, createEnumObject, and createInterfaceObject, then read the repeats covered by TypeExtensionTest.repeats and extensions without a type keep building. Move those cases into an error test and check that the SchemaError names the type and repeated value, field, or member. Update the 15.0.0 release notes; done means repeats are rejected and the tests verify the error.

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描述

enhancement

Since #855, extensions are merged into the type they extend. When a type ends up declaring an enum value, interface field or union member twice, e.g. in the type and again in an extension, tools keeps the first one and logs a warning:

enum Color { RED }
extend enum Color { RED GREEN }

Type 'Color' declares value 'RED' more than once, only the first one is kept.

graphql-java's SchemaGenerator rejects these schemas, and the spec doesn't allow an extension to redeclare what the type already has. But they built before #855, since the extension used to replace the type, so failing on them has to wait for a major release.

Keeping the first one hides mistakes though. interface Node { id: ID } plus extend interface Node { id: String } builds with id: ID, and only a log line says the extension's id was dropped.

What to change
  • replace the warning in SchemaParser#warnRepeated with a SchemaError that names the type and the repeated value, field or member
  • drop the distinctBy { it.name } on the enum values in createEnumObject and the interface fields in createInterfaceObject
  • move the repeats out of TypeExtensionTest.repeats and extensions without a type keep building into a test for the error
  • mention it in the 15.0.0 release notes
主要语言
Kotlin
星标
824
派生
175
平均合并
2 天 5 小时
30 天内合并 PR
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