area: testsarea: validationgood first issuekind: diagnosticsnaga
描述
Follow-up from #6791. It didn't add a test case.
贡献者指南
技术栈
rust
领域
testing
议题类型
test
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
2
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
under 1 hour
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
active
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
understanding of wgpu's snapshot testingprior PR #6791 context
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
60
研究方向
Look at PR #6791 to understand the ImageStore type mismatch diagnostic that was added. Then identify the existing snapshot test file for diagnostics (likely under tests/ directory) and add a test case similar to existing ones. The test should verify that the diagnostic is emitted correctly. No code change beyond adding the test is needed.
