Change OpenAPI document name resolution to be case-insensitive #59199
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* Fix analyser error * Wrote unit test to verify when bug is fixed * Register document names in a case-insensitive manner * Change OpenAPI document name resolution to be case-insensitive * Restore AddOpenApiCore to its own method * Fix typo in extension method
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Change OpenAPI document name resolution to be case-insensitive
Case-sensitive urls are now supported when retrieving OpenAPI documents.
Description
There was a routing issue when using case-sensitive document names in
Microsoft.AspNetCore.OpenApi'sAddOpenApi()andMapOpenApi()methods. If you registered a document in a case-sensitive manner (MyDocument) and tried to retrieve it at/openapi/mydocument.json, it would result in a 404.This is odd, as ASP.NET Core's routing has always been case-insensitive by default.
The reason for this bug is that keyed services are used to register relevant services. The key is the document name, and keyed services are case-sensitive.
This PR changes this inconsistent behaviour by allowing case-insensitive document resolution by invariantly lowercasing both the registered document name and the document name that's being retrieved.
Fixes #59175