The default behavior for request and response body content types is broken

[mikekistler]

The default behavior for content types is not working correctly, at least as far as what gets emitted by the openapi3 emitter.

The documented default behavior is:

op download(): bytes; // response content type is application/octet-stream
op upload(@body file: bytes): void; // request content type is application/octet-stream
op getContent(): string; // response content type is text/plain
op getPet(): {
  // response content type is application/json
  name: string;
};

But in the playground all these wind up being application/json:

Playground example

[timotheeguerin]

So we do have test explicitly checking for that, I might have forgotten our previous decision on this when writing the docs

https://github.com/timotheeguerin/typespec/blob/92a245c8b87c864592f09d3f6c91499f0b8ebe66/packages/openapi3/test/return-types.test.ts#L560-L570

[timotheeguerin]

hhm i guess from your comment on the PR that added this test :)
#125 (review)

Seems like I had this "magic" originally but we reverted to assume always application/json by default.

[markcowl]

est: 1